grinding cup wheels
2014年2月27日星期四
Diamond tools industry development situation analysis
Diamond tools for its unparalleled performance advantages become the accepted , the only effective brittle nonmetallic materials processing tool that broad range of applications , and the continuous extension . Currently , diamond tools are not only widely used in construction , stone processing industry , automotive industry , transport industry, geological survey GUSHI concrete saws and defense industry and other fields , but also in precious stones, medical equipment, wood , glass, steel , stone handicrafts, ceramics and composite non-metallic hardware many new areas of brittle materials continue to be applied , the demand for diamond tools is a significant increase year by year . Especially in recent years , and its main downstream industry has been rapid development, such as our country has become the world's largest stone production and processing countries ; China's construction industry is also more than 20% annual growth rate , and so on . Development of downstream industries to become diamond tool industry to provide a broad market space. Meanwhile, with the continuous improvement of diamond tool performance , functionality continues to expand, its scope of application has been gradually extended to the semiconductor , aerospace , information and many other areas , these new GUSHI ceramic tile saw applications, new markets will open up the space of the diamond tool industry . Industries have been expanding, competitive advantage is gradually emerging with the rapid take-off increasingly sophisticated synthetic diamond technology and China 's economy , China has had more diamond tool manufacturing technology accumulation and progress , with a strong manufacturing capacity. Because of the great advantages of Chinese enterprises on labor costs , coupled with the trend of technology research and development to catch up on the hair , making our enterprise has obvious advantages in the product price. Rapid GUSHI diamond polishing tools growth in market demand , local companies have launched diamond tools , according to the statistics : At present, China has thousands of diamond tools business , has been formed to Danyang , Shijiazhuang and other places as the representative of diamond tools production base , and the emergence of a number of internationally competitive advantages of enterprises . China has become the world's major producer of diamond tools , applications and exporting countries , the annual output value of more than ten billion yuan . Theoretical research and manufacturing of diamond tools and constantly improve the level of...
2014年2月25日星期二
Concerned about the long-term development of diamond cutting tools
The diamond tool industry worldwide transfer completed, the domestic industry concentration is low. Currently, China, South Korea has GUSHI ceramic tile saw become the world's diamond tools production base, American and European countries also retain a small amount of high-end capacity. In the United States, imports of Chinese products accounted for 40% -50%, count about 70% -80% in Korea. As the barriers to entry are not high diamond tools, domestic concentration is low. In a large number of small production base of stone tools and processing enterprises, often only a few types of products, profitability compared with the large-scale enterprises (such as Bo deep tools) there is a GUSHI turbo diamond blade big gap, along with upgrades and diamond tools category The gross profit margin of return, industry consolidation trend.
Alternative Space huge diamond tools: diamond tools is an emerging industry, there is still much room for its alternative to traditional tools. Still using traditional soft abrasive. If fully realized alternative, ceramic production consumed diamond tools production value will double. The GUSHI carbide saw blades past two years, beginning diamond tools used for wall, floor grinding, more mature foreign and domestic start-ups. Overall, with the continuous improvement of existing areas of penetration, as well as new applications and open up a huge room for growth in the market size of diamond tools.
Alternative Space huge diamond tools: diamond tools is an emerging industry, there is still much room for its alternative to traditional tools. Still using traditional soft abrasive. If fully realized alternative, ceramic production consumed diamond tools production value will double. The GUSHI carbide saw blades past two years, beginning diamond tools used for wall, floor grinding, more mature foreign and domestic start-ups. Overall, with the continuous improvement of existing areas of penetration, as well as new applications and open up a huge room for growth in the market size of diamond tools.
2013年11月11日星期一
CVD diamond coating and the difference between the amorphous diamond coating
(1) CVD diamond coated with amorphous diamond coating difference
Amorphous diamond ( also called diamond-like carbon - Annotation ) coatings are deposited using a PVD process carbon . It has a key part of the diamond SP3 , SP2 also has some carbon bond ; their sds hammer drill bits film hardness is high, but lower than the hardness of diamond film ; thickness than we usually deposited diamond film to be thinner . Machining graphite , amorphous diamond coated tool life is uncoated carbide tools 2-3 times. In contrast , CVD diamond is deposited using CVD process pure diamond coating , machining graphite carbide cutting tool life is 12-20 times , thereby reducing the number of tool changes to improve the reliability and accuracy of processing consistency.
( 2 ) can not be hardened steel with diamond tooling
Diamond from carbon atoms. Certain materials when heated , sucked from the carbon atoms in diamond and carbide is formed in the workpiece . Iron is one such material . Cutting tools with diamond iron group material , the friction generated heat causes diffusion of carbon atoms in the diamond into the iron , the resulting diamond coating due diamond blade circular saw to chemical wear and premature failure .
( 3 ) re-grinding and ( or ) heavy coating of diamond coated tools is difficult to guarantee the quality of the coating formed on the surface as the tool for the pure diamond , so the tool with a diamond wheel for re-grinding takes a very long time. In addition , the growth of the diamond tool used . Preparation of the tool will change the chemical properties of the surface , since the coating of this chemical properties requires very precise control, so the effect of the tool recoating difficult to be guaranteed .
( 4 ) diamond coated tool life varies
Like any other tool , diamond coated tool life varies , depending on the material to be cut , the choice of feed rate and cutting speed , and the geometry of the workpiece and so on. Generally, diamond-coated graphite machining tool life is uncoated carbide tools 10-20 times , in some cases, may even be longer. This way , you can use a tool to complete almost any processing tasks without tool change due to tool wear and to avoid disruption and recalibration process , making it possible to achieve unattended machining . The processing of the composite material , is entirely possible to obtain a longer tool life.
According to reports, in the processing of high-density glass fiber , carbon fiber and Gl0-FR4 other difficult cutting blades machining composite materials , diamond-coated tool life up to uncoated carbide tool 70 times .
( 5 ) diamond coating spalling can prevent flaking coating of diamond -coated tools are a serious problem , but also a common problem ( especially in the processing of materials like carbon fiber ) , will lead to unpredictable tool life . The late 1990s , interfacial chemical properties were identified as affecting the diamond coating adhesion properties of important factors. By selecting good compatibility Carbide chemical characteristics, the use of appropriate technology and reasonable pre- deposition reaction conditions , it is possible to reduce or eliminate the diamond coating spalling , stably smooth wear patterns . Observed under the microscope normal wear diamond coated tool , you can find the diamond was worn until stable carbide substrate , without chipping or peeling .
Amorphous diamond ( also called diamond-like carbon - Annotation ) coatings are deposited using a PVD process carbon . It has a key part of the diamond SP3 , SP2 also has some carbon bond ; their sds hammer drill bits film hardness is high, but lower than the hardness of diamond film ; thickness than we usually deposited diamond film to be thinner . Machining graphite , amorphous diamond coated tool life is uncoated carbide tools 2-3 times. In contrast , CVD diamond is deposited using CVD process pure diamond coating , machining graphite carbide cutting tool life is 12-20 times , thereby reducing the number of tool changes to improve the reliability and accuracy of processing consistency.
( 2 ) can not be hardened steel with diamond tooling
Diamond from carbon atoms. Certain materials when heated , sucked from the carbon atoms in diamond and carbide is formed in the workpiece . Iron is one such material . Cutting tools with diamond iron group material , the friction generated heat causes diffusion of carbon atoms in the diamond into the iron , the resulting diamond coating due diamond blade circular saw to chemical wear and premature failure .
( 3 ) re-grinding and ( or ) heavy coating of diamond coated tools is difficult to guarantee the quality of the coating formed on the surface as the tool for the pure diamond , so the tool with a diamond wheel for re-grinding takes a very long time. In addition , the growth of the diamond tool used . Preparation of the tool will change the chemical properties of the surface , since the coating of this chemical properties requires very precise control, so the effect of the tool recoating difficult to be guaranteed .
( 4 ) diamond coated tool life varies
Like any other tool , diamond coated tool life varies , depending on the material to be cut , the choice of feed rate and cutting speed , and the geometry of the workpiece and so on. Generally, diamond-coated graphite machining tool life is uncoated carbide tools 10-20 times , in some cases, may even be longer. This way , you can use a tool to complete almost any processing tasks without tool change due to tool wear and to avoid disruption and recalibration process , making it possible to achieve unattended machining . The processing of the composite material , is entirely possible to obtain a longer tool life.
According to reports, in the processing of high-density glass fiber , carbon fiber and Gl0-FR4 other difficult cutting blades machining composite materials , diamond-coated tool life up to uncoated carbide tool 70 times .
( 5 ) diamond coating spalling can prevent flaking coating of diamond -coated tools are a serious problem , but also a common problem ( especially in the processing of materials like carbon fiber ) , will lead to unpredictable tool life . The late 1990s , interfacial chemical properties were identified as affecting the diamond coating adhesion properties of important factors. By selecting good compatibility Carbide chemical characteristics, the use of appropriate technology and reasonable pre- deposition reaction conditions , it is possible to reduce or eliminate the diamond coating spalling , stably smooth wear patterns . Observed under the microscope normal wear diamond coated tool , you can find the diamond was worn until stable carbide substrate , without chipping or peeling .
2013年10月28日星期一
Grinding inner circle divided into the following four categories
Grinding inner circle divided into the following four categories: speed electric aerostatic bearing inner circle grinding, grinding inner circle of mechanical transmission, pneumatic and diamond blades electric grinding inner circle inner circle grinding.
Aerostatic bearing speed electric grinding inner circle: The aerostatic bearing (supply pressure is 40 ~ 65MPa), grinding system rigidity, both electric grinding characteristics, speed up 180000R/MIN, suitable for grinding a ~ 10MM hole.
Inner circle grinding mechanical transmission: mainly by the spindle, bearings, sleeve body shell, flat supporting pulleys and other components. Then, after replacement of the long axis, is used to grind different bore diameter and length, for comparison, the use of low speed, the speed is generally lower than 2000R/MIN.
Wind-driven inner circle grinding: spindle with a turbine driven by compressed air turbine rotates the spindle Edge 2000 Pads speed, spindle speed reaches 10000R/MIN. Moreover, small vibration, pressure can be adjusted stepless. And with regulators, filters and other accessories.
Electric grinding inner circle: A three-phase asynchronous motor direct drive, and another by a high-frequency electric motor driven spindle speed of up to 50000 ~ 90000R/MIN. Output power is larger, instantaneous overload, speed characteristics hard, little vibration.
Aerostatic bearing speed electric grinding inner circle: The aerostatic bearing (supply pressure is 40 ~ 65MPa), grinding system rigidity, both electric grinding characteristics, speed up 180000R/MIN, suitable for grinding a ~ 10MM hole.
Inner circle grinding mechanical transmission: mainly by the spindle, bearings, sleeve body shell, flat supporting pulleys and other components. Then, after replacement of the long axis, is used to grind different bore diameter and length, for comparison, the use of low speed, the speed is generally lower than 2000R/MIN.
Wind-driven inner circle grinding: spindle with a turbine driven by compressed air turbine rotates the spindle Edge 2000 Pads speed, spindle speed reaches 10000R/MIN. Moreover, small vibration, pressure can be adjusted stepless. And with regulators, filters and other accessories.
Electric grinding inner circle: A three-phase asynchronous motor direct drive, and another by a high-frequency electric motor driven spindle speed of up to 50000 ~ 90000R/MIN. Output power is larger, instantaneous overload, speed characteristics hard, little vibration.
2013年10月24日星期四
Bronze bond diamond wheel
Bronze diamond wheels with high-temperature sintering manufacturing, the combination of high strength , good formability , high temperature , thermal conductivity and good wear dry cut blades resistance , extremely long life , can withstand greater loads.
Widely used in glass, ceramics , ferrite , semiconductor materials, stone and other hard and brittle material and a metal material of the grinding process .
The characteristic features of the grinding wheel abrasive particle size , binder, hardness, structure , and other factors determined shape and size . In superhard grinding wheel hardness and organizations are generally neglects to mention .
Abrasive grinding wheel is the main raw material manufacturing , cutting directly responsible work . . Diamond : common materials suitable for processing high wheel hard to process hard brittle concrete diamond blades metal and nonmetal materials . Such as cemented carbide , optical glass , ceramics , stone , and other semiconductor materials .
Particle size refers to the size of the abrasive particles , the size of a particle numerals. GB provides two kinds of abrasive powder particle size and number. Generally speaking, use coarse abrasive coarse ( size number smaller ) , abrasive grinding to a smaller ( larger particle number ) ; powder used for grinding and other precision machining and ultra- precision machining. Ceramic diamond wheel size range generally w1.5 ~ 80/100
The role of binding agent binding agent is bonded abrasive having a given strength and shape of the wheel. Wheel strength, impact resistance , heat resistance and corrosion resistance , depending on the binding agent performance . The binding agents are used tct circular saw blade vitrified (V), the resin binding agent (B), the rubber binding agent (R) and the metal binding agent (M) and so on . Vitrified bond : the most widely applicable to cylindrical, round, flat , centerless grinding and profile grinding wheel , etc. ; resin bond : for cutting and slotted sheet wheel and high-speed grinding wheel ; rubber combined agent: guide wheel for centerless grinding , polishing wheel ; metal bond : for diamond grinding wheel .
Widely used in glass, ceramics , ferrite , semiconductor materials, stone and other hard and brittle material and a metal material of the grinding process .
The characteristic features of the grinding wheel abrasive particle size , binder, hardness, structure , and other factors determined shape and size . In superhard grinding wheel hardness and organizations are generally neglects to mention .
Abrasive grinding wheel is the main raw material manufacturing , cutting directly responsible work . . Diamond : common materials suitable for processing high wheel hard to process hard brittle concrete diamond blades metal and nonmetal materials . Such as cemented carbide , optical glass , ceramics , stone , and other semiconductor materials .
Particle size refers to the size of the abrasive particles , the size of a particle numerals. GB provides two kinds of abrasive powder particle size and number. Generally speaking, use coarse abrasive coarse ( size number smaller ) , abrasive grinding to a smaller ( larger particle number ) ; powder used for grinding and other precision machining and ultra- precision machining. Ceramic diamond wheel size range generally w1.5 ~ 80/100
The role of binding agent binding agent is bonded abrasive having a given strength and shape of the wheel. Wheel strength, impact resistance , heat resistance and corrosion resistance , depending on the binding agent performance . The binding agents are used tct circular saw blade vitrified (V), the resin binding agent (B), the rubber binding agent (R) and the metal binding agent (M) and so on . Vitrified bond : the most widely applicable to cylindrical, round, flat , centerless grinding and profile grinding wheel , etc. ; resin bond : for cutting and slotted sheet wheel and high-speed grinding wheel ; rubber combined agent: guide wheel for centerless grinding , polishing wheel ; metal bond : for diamond grinding wheel .
2013年10月7日星期一
Diamond grinding wheel wear and tear
Some devices are also equipped with spindle speed , wheel auto repair, tool nose radius microscope and automatic processing devices. Grinding wheel surface is essentially randomly distributed on a large number of abrasive grains in the process of cutting . Because diamond, cubic boron nitride and other superhard materials with high hardness and abrasive grinding
wheels wear resistance , and its grinding mechanism and general grinding of metallic materials have varied considerably . System superhard materials during grinding diamond wheel loss mechanism for rational selection and use of diamond grinding wheel has guiding significance .
Diamond wheel loss microanalysis :
The various conditions of use after grinding diamond wheel was observed under a microscope , the loss can be analyzed in detail , the results are as follows:
In the grinding force and grinding speed is low under the conditions of diamond grinding wheel , the surface of the angular distribution of a large , consistent reflective facets of diamond abrasive wear . This diamond blade saws is because the diamond grains and superhard materials produced by mechanical friction and mechanical wear. This wear is gradual, with its grinding abrasive wear amount proportional to the stroke length .
In the grinding zone temperature higher grinding conditions on the diamond grit diamond wheel and graphite oxidation and loss. According to the properties of diamond , oxidation, depending on the degree of graphitization of the diamond abrasive crystals integrity and the degree of graphitization is also related with the crystal orientation . Good diamond abrasive crystal perfection , oxidation , low degree of graphitization loss .
Diamond grinding wheel diamond grit on the concrete saw blades surface portion of the occurrence of local fracture and fragmentation , resulting in whole shedding. Cleavage occurs diamond abrasive damage . As the crystal is determined by the crystal structure of the cleavage of chemical bonds factor 7 type, intensity and distribution of the resulting fracture plane , it is often the bond strength along the azimuth plane the final generation . Randomness of the distribution of grain , determine the occurrence of cleavage destruction is inevitable.
Diamond wheel loss microanalysis :
The various conditions of use after grinding diamond wheel was observed under a microscope , the loss can be analyzed in detail , the results are as follows:
In the grinding force and grinding speed is low under the conditions of diamond grinding wheel , the surface of the angular distribution of a large , consistent reflective facets of diamond abrasive wear . This diamond blade saws is because the diamond grains and superhard materials produced by mechanical friction and mechanical wear. This wear is gradual, with its grinding abrasive wear amount proportional to the stroke length .
In the grinding zone temperature higher grinding conditions on the diamond grit diamond wheel and graphite oxidation and loss. According to the properties of diamond , oxidation, depending on the degree of graphitization of the diamond abrasive crystals integrity and the degree of graphitization is also related with the crystal orientation . Good diamond abrasive crystal perfection , oxidation , low degree of graphitization loss .
Diamond grinding wheel diamond grit on the concrete saw blades surface portion of the occurrence of local fracture and fragmentation , resulting in whole shedding. Cleavage occurs diamond abrasive damage . As the crystal is determined by the crystal structure of the cleavage of chemical bonds factor 7 type, intensity and distribution of the resulting fracture plane , it is often the bond strength along the azimuth plane the final generation . Randomness of the distribution of grain , determine the occurrence of cleavage destruction is inevitable.
2013年9月29日星期日
diamond tool according to which of several varieties classified material
CVD diamond is a diamond material of high wear resistance of pure, non-binding agent, which is at low pressure (<0.1MPa) prepared under. CVD diamond films are coated CVD (CD) and CVD thick (TFD) forms.CD is a CVD (chemical vapor deposition) process, the carbide substrate (K type alloy used) is General purpose
blade deposited to a thickness of about 10 ~ 30μm, composed of a polycrystalline diamond film is made.Matrix is made easy due to complex shapes, it applies to the complex geometry of the tool, such as taps, drills, end mills and band chipbreakers indexable inserts and so on. International instruments the market have a CD tool products, such as the diamond blade saws Swedish Sandvik's CD1810 and the United States Kennametal's KCD25, mainly for non-ferrous metals and non-metallic materials, high-speed precision machining, tool life than uncoated carbide tools increased nearly tenfold or even several times. Diamond saw blade, but not suitable for processing of metal cutting tools CD a class of composite materials, composite materials because of hard particles in a very short period of time a coating on the surface of the tool will be worn out, so even though prices than similar tools CD PCD tools to be low, but the diamond film and the adhesion between the base material is small, so limiting its wide application.
2013年9月24日星期二
cutting tool can be made with natural materials
single-crystal diamond, synthetic single crystal diamond, chemical vapor deposition (CVD) diamond films, synthetic polycrystalline diamond composite tablets.
A natural single crystal diamondNatural single crystal diamond is a single crystal anisotropic. Hardness HV9000-10000, is the hardest substance in nature. This material is excellent wear diamond blade circular saw resistance, the cutting tool can be made longer maintain dimensional stability, and therefore has a very long tool life.Natural diamond tool edge can be machined to extremely sharp. Can be used to make ophthalmology and neurosurgery scalpel; contact lenses can be used for machining surfaces; can be used for cutting optical glass fibers; used for processing gold, platinum jewelry patterns; most important use is the high-speed super-finishing non-ferrous metals and their alloys. Such as aluminum, gold, babbitt, beryllium copper, copper and so on. Produced with a natural diamond super finishing tool tip arc portion which under the microscope at 400-fold defect, the polygon mirror for processing aluminum alloy, oxygen-free laser mirror, gyroscopes, recorder drum and wet saw blades so on. Performance can be achieved roughness Ra (0.01-0.025) μm.
Poor natural diamond material toughness, flexural strength is very low, only (0.2-0.5) Gpa. Poor thermal stability, the temperature reaches 700 ℃ -800 ℃ will be lost when the hardness. Carbonization temperature will be higher. In addition, its strong affinity with iron generally not suitable for production of steel.
2, single crystal synthetic diamond
Single crystal synthetic diamond as a tool material, can buy on the market there are currently De Beers (DE-BEERS) the production of industrial grade single crystal diamond material. This hss drill bits material hardness slightly lower than natural diamond. Other properties are comparable with the natural diamond. Because after artificial, orientation and size of its cleavage becomes controllable and unity. With the development of high pressure technology, the maximum size of single crystal synthetic diamond can already do 8mm. Since this material has a relatively good consistency and lower prices, so widespread attention. As an alternative to natural diamond of the new material, the application of synthetic single crystal diamond will have a big development.
A natural single crystal diamondNatural single crystal diamond is a single crystal anisotropic. Hardness HV9000-10000, is the hardest substance in nature. This material is excellent wear diamond blade circular saw resistance, the cutting tool can be made longer maintain dimensional stability, and therefore has a very long tool life.Natural diamond tool edge can be machined to extremely sharp. Can be used to make ophthalmology and neurosurgery scalpel; contact lenses can be used for machining surfaces; can be used for cutting optical glass fibers; used for processing gold, platinum jewelry patterns; most important use is the high-speed super-finishing non-ferrous metals and their alloys. Such as aluminum, gold, babbitt, beryllium copper, copper and so on. Produced with a natural diamond super finishing tool tip arc portion which under the microscope at 400-fold defect, the polygon mirror for processing aluminum alloy, oxygen-free laser mirror, gyroscopes, recorder drum and wet saw blades so on. Performance can be achieved roughness Ra (0.01-0.025) μm.
Poor natural diamond material toughness, flexural strength is very low, only (0.2-0.5) Gpa. Poor thermal stability, the temperature reaches 700 ℃ -800 ℃ will be lost when the hardness. Carbonization temperature will be higher. In addition, its strong affinity with iron generally not suitable for production of steel.
2, single crystal synthetic diamond
Single crystal synthetic diamond as a tool material, can buy on the market there are currently De Beers (DE-BEERS) the production of industrial grade single crystal diamond material. This hss drill bits material hardness slightly lower than natural diamond. Other properties are comparable with the natural diamond. Because after artificial, orientation and size of its cleavage becomes controllable and unity. With the development of high pressure technology, the maximum size of single crystal synthetic diamond can already do 8mm. Since this material has a relatively good consistency and lower prices, so widespread attention. As an alternative to natural diamond of the new material, the application of synthetic single crystal diamond will have a big development.
2013年9月21日星期六
Abrasive material in stainless steel processing definition of what
The abrasive material production technology experts have confirmed : with grinding tools and abrasives, removed from the iamond tool manufacturer workpiece surface layer is very thin abrasive finishing method is to define a professional ; secondly , subdivision opened , the abrasive materials, the main definition also abrasive materials to look at the specific tools and stainless steel products for use
First, the abrasive material of the stainless steel products in the role? First look abrasive material is characterized by : the main products to help steel into a product with the brightness of the craft . Obtain high accuracy and a low value of Ra . But generally can not improve the hole saw blades processing between the surface and other surfaces position accuracy . another somewhat more importantly, the nature of products suitable for stainless steel , stainless steel refers to the resistance of air, steam , water and other corrosive medium and weak acid, alkali, salt and other chemical etching medium corrosion of steel , also known as acid-resistant stainless steel . two , abrasive materials What tools ?
Grind the workpiece abrading tool is a tool , but it is also the carrier of abrasive , hardness should be less than the hardness of the workpiece , there are some wear , often made of gray cast iron . Wet grind lap microstructure of iron ferrite -based ; dry research study with uniform and fine pearlite places as the substrate . grinding M5 thread and less complex shape of small parts , the commonly used mild steel lap .
Grinding eyelet and soft metal materials , mostly made of brass , copper lap . Lap should have sufficient rigidity , and wet polishing pad its working surfaces have a high geometric precision . Lap during the grinding process is also subject to cutting and wear, such as operating properly, its accuracy can be improved , so that the workpiece machining accuracy can be higher than the lap of the original precision .4 F3 Huizhou HTC grinding plant material
First, the abrasive material of the stainless steel products in the role? First look abrasive material is characterized by : the main products to help steel into a product with the brightness of the craft . Obtain high accuracy and a low value of Ra . But generally can not improve the hole saw blades processing between the surface and other surfaces position accuracy . another somewhat more importantly, the nature of products suitable for stainless steel , stainless steel refers to the resistance of air, steam , water and other corrosive medium and weak acid, alkali, salt and other chemical etching medium corrosion of steel , also known as acid-resistant stainless steel . two , abrasive materials What tools ?
Grind the workpiece abrading tool is a tool , but it is also the carrier of abrasive , hardness should be less than the hardness of the workpiece , there are some wear , often made of gray cast iron . Wet grind lap microstructure of iron ferrite -based ; dry research study with uniform and fine pearlite places as the substrate . grinding M5 thread and less complex shape of small parts , the commonly used mild steel lap .
Grinding eyelet and soft metal materials , mostly made of brass , copper lap . Lap should have sufficient rigidity , and wet polishing pad its working surfaces have a high geometric precision . Lap during the grinding process is also subject to cutting and wear, such as operating properly, its accuracy can be improved , so that the workpiece machining accuracy can be higher than the lap of the original precision .4 F3 Huizhou HTC grinding plant material
2013年9月11日星期三
Diamond Saw Blade cutting the amount of
In the stone processing, stone processing cutting costs account for about 50% of the total cost. At present, China's stone business is quite common to use diamond circular saws for the cutting device. According to statistics, the average per sawing 1m. Granite diamond segment consumes about 3-3.8 million, the power consumption of about 10 ~ 12kW.h, to China's annual use of diamond circular saw stone cutting 150 million m2 per diamond grinding wheel annum gross consumption of diamond saw blades more than 500 million yuan, the total energy consumption by about 2 billion kw.h, thus optimizing the amount of diamond saw blades for cutting, reducing energy consumption, saw cutting consumption and improve the efficiency of far-reaching economic and social significance.
Diamond circular saw cutting costs affecting factors include stone composition, structure, physical and mechanical properties, equipment, technical performance, the blade cutting the amount of process performance and selection and other factors. Several factors in this regulation is only cutting the amount of artificial optional. Therefore, improving the stone sawing process is to reduce energy consumption, consumption and improve cutting efficiency saws to reduce the effective cost cutting measures.Grinding damage: the force effects and temperature than the response, after a period of use of the blade tend to produce wear damage. Grinding damage in dry cut blades the form of mainly the following: abrasive wear, local crushing, a large area of broken off, binders direction along the cutting speed of the mechanical abrasions. Abrasive: Diamond particles and constant friction formula pieces, into a flat edge passivation, loss cutting, increasing friction. Heat causes the cutting surface of the diamond particles graphite sheet, the hardness greatly reduced, increased wear: the surface of the diamond particles exposed to alternating thermal stresses, and also the cutting under alternating stress, fatigue cracks will be partially broken, revealing a sharp new edge, is an ideal wear pattern; large area broken: diamond particles in the Leads to withstand shock loads, the concrete cutting blade more prominent grain and grain prematurely consumed; shedding: the diamond cutting force alternating binding agent particles are constantly being generated shaking loose. Meanwhile, the cutting process of the binding agent itself wear and cutting heat to soften the binding agent. This makes the gripping force decreased binding agent, when the particle is greater than the cutting force on the gripping force, the diamond particles will fall off. No matter what kind of wear and tear with the diamond particles to withstand load and temperature are closely related. Both of which are determined by Cheng cutting process and cooling lubrication conditions.
Diamond circular saw cutting costs affecting factors include stone composition, structure, physical and mechanical properties, equipment, technical performance, the blade cutting the amount of process performance and selection and other factors. Several factors in this regulation is only cutting the amount of artificial optional. Therefore, improving the stone sawing process is to reduce energy consumption, consumption and improve cutting efficiency saws to reduce the effective cost cutting measures.Grinding damage: the force effects and temperature than the response, after a period of use of the blade tend to produce wear damage. Grinding damage in dry cut blades the form of mainly the following: abrasive wear, local crushing, a large area of broken off, binders direction along the cutting speed of the mechanical abrasions. Abrasive: Diamond particles and constant friction formula pieces, into a flat edge passivation, loss cutting, increasing friction. Heat causes the cutting surface of the diamond particles graphite sheet, the hardness greatly reduced, increased wear: the surface of the diamond particles exposed to alternating thermal stresses, and also the cutting under alternating stress, fatigue cracks will be partially broken, revealing a sharp new edge, is an ideal wear pattern; large area broken: diamond particles in the Leads to withstand shock loads, the concrete cutting blade more prominent grain and grain prematurely consumed; shedding: the diamond cutting force alternating binding agent particles are constantly being generated shaking loose. Meanwhile, the cutting process of the binding agent itself wear and cutting heat to soften the binding agent. This makes the gripping force decreased binding agent, when the particle is greater than the cutting force on the gripping force, the diamond particles will fall off. No matter what kind of wear and tear with the diamond particles to withstand load and temperature are closely related. Both of which are determined by Cheng cutting process and cooling lubrication conditions.
2013年9月3日星期二
blade cutting what knowledge needs to pay attention to
1, idle: in particular, the first use of a new base, the need to idle for about 30 minutes, the summer hot season needs to bring water idling, which aims to further eliminate welding head when matrix effects and enhanced blade rotating at high speed state to maintain the masonry drill bits intrinsic quality of memory.
2, blocks of not less than 0.5m3, and placed securely, the bottom should be well-wood pad, plug SUCOOT prison, blocks should be located in symmetrical positions workbench, workbench cars and blocks to ensure the stability, without shaking , shaking phenomenon.
3, according to the blocks of length, width, height adjusting limit switch, the blade lift and skip the trip in a reliable and effective range. Saw blade should leave before sawing blocks up to 10 ~ 20mm. After sawing, saw cut should be left away from the blocks at the bottom of 20-40mm, knife blade to go about running, you should exit all blocks Jukou the blade from not less than 150-200mm, to prevent the blade hit Shortage material.
4, the blade idling stable only after a trial cut blocks are not allowed contact with the blade starts cutting edge blade, cutting blade rotation are not allowed to stop, to withdraw Jukou before stalling.
5, cutting blocks are shaking if found should immediately stop cutting the blocks to be firmly fixed before it can continue working, cutting, are not allowed to move in any blocks.
6, the cutting blade and found a diamond discs significant slowdown or even clip knife phenomenon, it may be belt slippage, compression nut loose or too large depth of cut, the cutting speed is too fast and other reasons, should be timely adjusted.
7, the line speed should be processed stone hardness and wear resistance to adapt, line speed table are recommended cutting different types of stone. Tip: line speed is not high, an increase in cutting efficiency, will reduce the life of the blade. 8, feed rate, depending on the processing of the material properties of each material when the cutting depth must have a certain range of the feed rate, if the speed is too high, will accelerate the wear of diamond or even fall off, causing the blade consumption too fast, if the speed is too low, then they will make the process of self-sharpening blades can not be normal, so "blunt, skid" lost cutting capacity. Under normal circumstances, the feed speed is slower when cutting, sawing should be in uniform for the common typical materials, when the cutting depth is 20mm, recommend the following feed rate table for your reference, when the thickness changes, the cutting speed can be Press the cutting area (cm2/min) to conversion. Tip: The first feed or each piece of board should be reduced by half for the first three walks.
9, the cutting depth for medium hard stone such as marble, limestone cut through at once, for hard stone and abrasive such as large granite, sandstone should step cutting, saw cutting granite monolithic, eating knife depth is generally 10-20mm , depth of cut marble cutting 50-100mm, more than double-sided cutting hard granite, depth of cut of each 3-5mm, should be based on the hardness of the stone, using a saw blade and the fixed performance, efficiency recommend the following table for your reference. Common materials cutting efficiency table Note: "1" indicates low power finishing; "2" indicates a high power roughing.
10, the blade rotation direction of the ring saw blades same stone as the feed direction along the cutting, contrary to reverse cutting, and reverse cutting, due to an upward vertical force component, in the form of stone off potential, therefore, is a solid stone, under the same conditions Next, you should try using smooth cutting. When using reverse cutting, cutting depth to be reduced, generally reduced to shun cutting 1/3-1/2.
11 In summary, the basic requirements for selection cutting process are: low hardness, good stone cutting performance can be deeply walking, brisk walking contrary shallow cut, ie corresponding to the same stone and saw and saw blade should be cutting efficiency, cutting board, good quality, long life blade and matrix process parameters prevail, the four complementary and mutually dependent, must not generalize. For example, when the saw blade cutting speed can not be maintained, indicating a blunt blade, cutting depth should be reduced while increasing the cutting speed to sharpening blades.
2, blocks of not less than 0.5m3, and placed securely, the bottom should be well-wood pad, plug SUCOOT prison, blocks should be located in symmetrical positions workbench, workbench cars and blocks to ensure the stability, without shaking , shaking phenomenon.
3, according to the blocks of length, width, height adjusting limit switch, the blade lift and skip the trip in a reliable and effective range. Saw blade should leave before sawing blocks up to 10 ~ 20mm. After sawing, saw cut should be left away from the blocks at the bottom of 20-40mm, knife blade to go about running, you should exit all blocks Jukou the blade from not less than 150-200mm, to prevent the blade hit Shortage material.
4, the blade idling stable only after a trial cut blocks are not allowed contact with the blade starts cutting edge blade, cutting blade rotation are not allowed to stop, to withdraw Jukou before stalling.
5, cutting blocks are shaking if found should immediately stop cutting the blocks to be firmly fixed before it can continue working, cutting, are not allowed to move in any blocks.
6, the cutting blade and found a diamond discs significant slowdown or even clip knife phenomenon, it may be belt slippage, compression nut loose or too large depth of cut, the cutting speed is too fast and other reasons, should be timely adjusted.
7, the line speed should be processed stone hardness and wear resistance to adapt, line speed table are recommended cutting different types of stone. Tip: line speed is not high, an increase in cutting efficiency, will reduce the life of the blade. 8, feed rate, depending on the processing of the material properties of each material when the cutting depth must have a certain range of the feed rate, if the speed is too high, will accelerate the wear of diamond or even fall off, causing the blade consumption too fast, if the speed is too low, then they will make the process of self-sharpening blades can not be normal, so "blunt, skid" lost cutting capacity. Under normal circumstances, the feed speed is slower when cutting, sawing should be in uniform for the common typical materials, when the cutting depth is 20mm, recommend the following feed rate table for your reference, when the thickness changes, the cutting speed can be Press the cutting area (cm2/min) to conversion. Tip: The first feed or each piece of board should be reduced by half for the first three walks.
9, the cutting depth for medium hard stone such as marble, limestone cut through at once, for hard stone and abrasive such as large granite, sandstone should step cutting, saw cutting granite monolithic, eating knife depth is generally 10-20mm , depth of cut marble cutting 50-100mm, more than double-sided cutting hard granite, depth of cut of each 3-5mm, should be based on the hardness of the stone, using a saw blade and the fixed performance, efficiency recommend the following table for your reference. Common materials cutting efficiency table Note: "1" indicates low power finishing; "2" indicates a high power roughing.
10, the blade rotation direction of the ring saw blades same stone as the feed direction along the cutting, contrary to reverse cutting, and reverse cutting, due to an upward vertical force component, in the form of stone off potential, therefore, is a solid stone, under the same conditions Next, you should try using smooth cutting. When using reverse cutting, cutting depth to be reduced, generally reduced to shun cutting 1/3-1/2.
11 In summary, the basic requirements for selection cutting process are: low hardness, good stone cutting performance can be deeply walking, brisk walking contrary shallow cut, ie corresponding to the same stone and saw and saw blade should be cutting efficiency, cutting board, good quality, long life blade and matrix process parameters prevail, the four complementary and mutually dependent, must not generalize. For example, when the saw blade cutting speed can not be maintained, indicating a blunt blade, cutting depth should be reduced while increasing the cutting speed to sharpening blades.
2013年8月29日星期四
marble processing procedures
Marble composite panels, by definition is marble with other materials have been processed by the performance of the original marble plates. Specifically, it has the following characteristics:
①, marble composite board broken concrete drill bits force of 258N/cm, more than 3 times stronger than the original plate.
②, no efflorescence yellowing: Because marble floor tiles and resin composite panels barrier layer of water and corrosive substances, eliminating the wet marble and cement paste after efflorescence yellowed common problem, wall stone can be directly wet paste, which hanging saving costs and reducing pendant hanging lugs and the space occupied by increasing the use of space.
③, Light weight: marble composite board panels and light weight than the original more than 2 times.
④, facilitate the construction: Marble tile composite panel construction method can be used instead of marble construction methods, so ease of construction, saving construction costs.
⑤, bond strength ideal: the tests show that the adhesion force: 91 N/cm2, specification is 600 * 600mm marble composite board 33 tons of gravitation would not be peeling.
⑥, heat resistance: marble composite panels soaking for a long time (120 hours) at 100 ℃ environment, no peeling, discoloration or other abnormal reflection.
⑦, low water absorption: marble composite plate on the back of ceramic tiles complete adhesion, the water absorption (0.13%) is low, less than 0.2%, not cracking.
⑧, smooth surface: marble composite board than the carbide tipped saw blade original plate surface smoothness is very good.
⑨, low prices: As with a thin stick to the thick slab of marble tile, marble composite panels so the price is lower than the original board about 30%.
⑩, specifications and diverse: specifications for the 600 * 600mm and above, a variety of specifications marble composite panels husband or other specifications according to customer requirements of production.
Marble composite plate machining program
First select marketable grade marble varieties, and purchase specifications for 610 * 610mm blank tiles (ie not polished on the surface of the shaft tiles).
1. Sawing wool board: the marble blocks in the way cutting machine to machine to a thickness of 14mm, size 610 * 610mm wool board, then dry.
2. Bonding: The blank tile flat, face up, while the rough surface tiles and marble painted wool board side of the prepared adhesives, adhesive may be coated evenly and thin, uniform is all on the plate can not be applied to the left and uniform holes, otherwise it will affect sheet strength and fracture easily during grinding; book is suitable for bonding needs, just right, thick lead to waste and increasing sheet thickness. Then the hair is coated with the adhesive side down on the positive plate together with an adhesive in the coating on a rough tile; then again in the polished marble plates while the upper and the front of another piece of blank tiles coated thin wet saw blades and uniform adhesive, then the other one is coated with adhesive on one side of the rough marble tiles together wool board, and then in the above press (available as a box of 10 weight 305 * 305mm sheet pressure at the top), after After more than 10 hours of consolidation, it becomes rough and down to the middle of the floor tiles marble composite wool board.
3. Of the profile: the top and bottom of the middle of rough marble composite tiles wool board mounted in the horizontal plane of the profile, right profile for the two side while the other side is rough marble tiles marble composite wool board.
4. Controlled thickness: Because marble composite wool board is made of marble, bonding agents and blank tiles composed of three, it is inevitable differences in thickness. Must therefore be controlled thickness. The marble composite marble wool board side up, thick machine controlled by controlling thickness to achieve the same thickness.
5. Polishing: After controlling thick marble and marble composite wool board up using ten continuous grinding and polishing, became high gloss marble composite wool board.
6. Cutting and chamfering: After grinding and polishing marble composite wool board cut by a cutting machine 600 * 600mm specification composite board, and then chamfered edges, became marble composite board products. Processed marble composite board finished thickness of 13mm, marble composite panel thickness of only 2 ~ 3 mm. The marble composite board finished packing, packing can be sold.
①, marble composite board broken concrete drill bits force of 258N/cm, more than 3 times stronger than the original plate.
②, no efflorescence yellowing: Because marble floor tiles and resin composite panels barrier layer of water and corrosive substances, eliminating the wet marble and cement paste after efflorescence yellowed common problem, wall stone can be directly wet paste, which hanging saving costs and reducing pendant hanging lugs and the space occupied by increasing the use of space.
③, Light weight: marble composite board panels and light weight than the original more than 2 times.
④, facilitate the construction: Marble tile composite panel construction method can be used instead of marble construction methods, so ease of construction, saving construction costs.
⑤, bond strength ideal: the tests show that the adhesion force: 91 N/cm2, specification is 600 * 600mm marble composite board 33 tons of gravitation would not be peeling.
⑥, heat resistance: marble composite panels soaking for a long time (120 hours) at 100 ℃ environment, no peeling, discoloration or other abnormal reflection.
⑦, low water absorption: marble composite plate on the back of ceramic tiles complete adhesion, the water absorption (0.13%) is low, less than 0.2%, not cracking.
⑧, smooth surface: marble composite board than the carbide tipped saw blade original plate surface smoothness is very good.
⑨, low prices: As with a thin stick to the thick slab of marble tile, marble composite panels so the price is lower than the original board about 30%.
⑩, specifications and diverse: specifications for the 600 * 600mm and above, a variety of specifications marble composite panels husband or other specifications according to customer requirements of production.
Marble composite plate machining program
First select marketable grade marble varieties, and purchase specifications for 610 * 610mm blank tiles (ie not polished on the surface of the shaft tiles).
1. Sawing wool board: the marble blocks in the way cutting machine to machine to a thickness of 14mm, size 610 * 610mm wool board, then dry.
2. Bonding: The blank tile flat, face up, while the rough surface tiles and marble painted wool board side of the prepared adhesives, adhesive may be coated evenly and thin, uniform is all on the plate can not be applied to the left and uniform holes, otherwise it will affect sheet strength and fracture easily during grinding; book is suitable for bonding needs, just right, thick lead to waste and increasing sheet thickness. Then the hair is coated with the adhesive side down on the positive plate together with an adhesive in the coating on a rough tile; then again in the polished marble plates while the upper and the front of another piece of blank tiles coated thin wet saw blades and uniform adhesive, then the other one is coated with adhesive on one side of the rough marble tiles together wool board, and then in the above press (available as a box of 10 weight 305 * 305mm sheet pressure at the top), after After more than 10 hours of consolidation, it becomes rough and down to the middle of the floor tiles marble composite wool board.
3. Of the profile: the top and bottom of the middle of rough marble composite tiles wool board mounted in the horizontal plane of the profile, right profile for the two side while the other side is rough marble tiles marble composite wool board.
4. Controlled thickness: Because marble composite wool board is made of marble, bonding agents and blank tiles composed of three, it is inevitable differences in thickness. Must therefore be controlled thickness. The marble composite marble wool board side up, thick machine controlled by controlling thickness to achieve the same thickness.
5. Polishing: After controlling thick marble and marble composite wool board up using ten continuous grinding and polishing, became high gloss marble composite wool board.
6. Cutting and chamfering: After grinding and polishing marble composite wool board cut by a cutting machine 600 * 600mm specification composite board, and then chamfered edges, became marble composite board products. Processed marble composite board finished thickness of 13mm, marble composite panel thickness of only 2 ~ 3 mm. The marble composite board finished packing, packing can be sold.
2013年8月23日星期五
saw blade with precautions
1, must be carefully read before using manual cutting machine and packaging items mentioned on the cover.
2, according to the wet diamond polishing pads choice of materials to be cut blade varieties, and check blades for cracks, distortions, lost teeth, do not use if damaged blade.
3, be sure to use a good cutter blade casing mounted guard, and wear face masks or protective eye.
4, the blade cutting machine please check before installation whether spindle runout, when the blade mounting flange and nut set with tight after installation and people must be the center hole of the blade is firmly fixed on the flange, according to Taiwan, a gasket must be good washer buying gently pushed manually rotating blade confirm whether the eccentric shaking.
5, after installing alloy saw before use preroll one minute, until the machine into operation only when the cutting operation.
6, the non-automatic cutting operation, you must gently normal operation of the saw blade enters the circular saw material, Forced hard pushed hard prohibited. And to prohibit reverse prohibit suddenly saw parked in the middle of the cut material, or cause jagged off, saw body deformation, prone to danger.
7, the use of abnormal sound heard and saw abnormal shaking or section does not usually stop the job and find the reason for the exception, the dry cut blades timely replacement blades.
8, after cutting please wipe rust oil to prevent blade rust due to long periods of use.
9, insert the blade perpendicular to the tool holder to hang in a dry, avoid wet areas. Do not place the blade flat on the ground, otherwise easily lead to blade deformation. Do not directly stacked multi-chip saw blade shall be spaced packaging to avoid jagged collision should gently.
10, when the blade is not sharp serrated grinding again, not easy to damage teeth grinding time original angle affect cutting accuracy and shorten the life of saw blade.
2, according to the wet diamond polishing pads choice of materials to be cut blade varieties, and check blades for cracks, distortions, lost teeth, do not use if damaged blade.
3, be sure to use a good cutter blade casing mounted guard, and wear face masks or protective eye.
4, the blade cutting machine please check before installation whether spindle runout, when the blade mounting flange and nut set with tight after installation and people must be the center hole of the blade is firmly fixed on the flange, according to Taiwan, a gasket must be good washer buying gently pushed manually rotating blade confirm whether the eccentric shaking.
5, after installing alloy saw before use preroll one minute, until the machine into operation only when the cutting operation.
6, the non-automatic cutting operation, you must gently normal operation of the saw blade enters the circular saw material, Forced hard pushed hard prohibited. And to prohibit reverse prohibit suddenly saw parked in the middle of the cut material, or cause jagged off, saw body deformation, prone to danger.
7, the use of abnormal sound heard and saw abnormal shaking or section does not usually stop the job and find the reason for the exception, the dry cut blades timely replacement blades.
8, after cutting please wipe rust oil to prevent blade rust due to long periods of use.
9, insert the blade perpendicular to the tool holder to hang in a dry, avoid wet areas. Do not place the blade flat on the ground, otherwise easily lead to blade deformation. Do not directly stacked multi-chip saw blade shall be spaced packaging to avoid jagged collision should gently.
10, when the blade is not sharp serrated grinding again, not easy to damage teeth grinding time original angle affect cutting accuracy and shorten the life of saw blade.
2013年8月18日星期日
diamond tool limitations and problems
Cutting tools with diamond iron group material, the friction generated heat causes diffusion of carbon atoms in the diamond into the iron, the resulting diamond coating due to chemical wear and premature failure.
Limit of diamond tools
Regrinding and (or) heavy coating of diamond coated tools is difficult to guarantee the saw blades quality of the coating formed on the surface as the tool for the pure diamond, so the tool with a diamond wheel for re-grinding takes a very long time. In addition, the growth of the diamond tool used. Preparation of the tool will change the chemical properties of the wall saw blades surface, since the coating of this chemical properties requires very precise control, so the effect of the tool recoating difficult to be guaranteed.
Problems diamond tools
Diamond coating spalling can prevent flaking coating of diamond-coated tools are a serious problem, but also a common problem (especially in the processing of materials like carbon fiber), will lead to unpredictable tool life. The late 1990s, interfacial chemical properties were identified as affecting the diamond coating adhesion properties of important factors. By selecting good compatibility Carbide chemical characteristics, the cbn grinding wheel use of appropriate technology and reasonable pre-deposition reaction conditions, it is possible to reduce or eliminate the diamond coating spalling, stably smooth wear patterns. Observed under the microscope normal wear diamond coated tool, you can find the diamond was worn until stable carbide substrate, without chipping or peeling.
Limit of diamond tools
Regrinding and (or) heavy coating of diamond coated tools is difficult to guarantee the saw blades quality of the coating formed on the surface as the tool for the pure diamond, so the tool with a diamond wheel for re-grinding takes a very long time. In addition, the growth of the diamond tool used. Preparation of the tool will change the chemical properties of the wall saw blades surface, since the coating of this chemical properties requires very precise control, so the effect of the tool recoating difficult to be guaranteed.
Problems diamond tools
Diamond coating spalling can prevent flaking coating of diamond-coated tools are a serious problem, but also a common problem (especially in the processing of materials like carbon fiber), will lead to unpredictable tool life. The late 1990s, interfacial chemical properties were identified as affecting the diamond coating adhesion properties of important factors. By selecting good compatibility Carbide chemical characteristics, the cbn grinding wheel use of appropriate technology and reasonable pre-deposition reaction conditions, it is possible to reduce or eliminate the diamond coating spalling, stably smooth wear patterns. Observed under the microscope normal wear diamond coated tool, you can find the diamond was worn until stable carbide substrate, without chipping or peeling.
2013年8月6日星期二
diamond tool wear
Diamond tool wear mechanism is more complex, can be divided into macro-and
micro-abrasion wear, the edge polishing pads former mainly mechanical wear, which is dominated by
thermal chemical wear. Diamond grinding tool breakage common form for the
former flank wear, flank wear and edge chipping. In single crystal diamond tool
sharpening process, requires the diamond blade wear to the grinding tool to meet the
requirements, but if the wear generated may damage not have a good grinding
before the flank. The edge cracking (i.e. chipping) is on the edge of the local
stress exceeds the capacity of the diamond cutting tool occurs, generally the
diamond crystal (111) cleavage plane of the micro-damage caused. In the ultra-
precision machining, diamond tool edge radius of the cutting edge is relatively
small, which itself is hard and brittle materials, and because of its
anisotropy and (111) surfaces prone to cleavage, with the concrete core bits vibration of the tool
blade and grinding wheel grit the mouth of the impact of the role, it is often
accompanied produce chipping.
micro-abrasion wear, the edge polishing pads former mainly mechanical wear, which is dominated by
thermal chemical wear. Diamond grinding tool breakage common form for the
former flank wear, flank wear and edge chipping. In single crystal diamond tool
sharpening process, requires the diamond blade wear to the grinding tool to meet the
requirements, but if the wear generated may damage not have a good grinding
before the flank. The edge cracking (i.e. chipping) is on the edge of the local
stress exceeds the capacity of the diamond cutting tool occurs, generally the
diamond crystal (111) cleavage plane of the micro-damage caused. In the ultra-
precision machining, diamond tool edge radius of the cutting edge is relatively
small, which itself is hard and brittle materials, and because of its
anisotropy and (111) surfaces prone to cleavage, with the concrete core bits vibration of the tool
blade and grinding wheel grit the mouth of the impact of the role, it is often
accompanied produce chipping.
2013年7月30日星期二
diamond tool wear
Diamond tool wear mechanism is more complex, can be divided into macro-and micro-abrasion wear, the diamond cup grinding wheel former mainly mechanical wear, which is dominated by thermal chemical wear. Diamond grinding tool breakage common form for the former flank wear, flank wear and edge chipping. In single crystal diamond tool sharpening process, requires the wear to the grinding tool to meet the requirements, but if the wear generated may damage not have a good grinding before the polishing pads flank. The edge cracking (i.e. chipping) is on the edge of the local stress exceeds the capacity of the diamond grinding wheel diamond cutting tool occurs, generally the diamond crystal (111) cleavage plane of the micro-damage caused. In the ultra-precision machining, diamond tool edge radius of the cutting edge is relatively small, which itself is hard and brittle materials, and because of its anisotropy and (111) surfaces prone to cleavage, with the vibration of the tool blade and grinding wheel grit the mouth of the impact of the role, it is often accompanied produce chipping.
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