The primary work of GUSHI Diamond toolsthe diamond cutting discs

Diamond cutting discs primary work ! Diamond cutting discs used in the steel industry at the moment are trivial compared So the primary vocal pieces are welded diamond cutting diamond concrete diamond bladescutting discs : two of the high-frequency welding and laser welding , high frequency welding pass is too high temperature solidification media will head welded together with the matrix , laser welding, laser beam through the head too concrete saw bladeslow marginal touch with the matrix resulting metallurgical melting beans cut . Sintered diamond cutting discs : two sintering and sintering of cold pressing, sintering constraints .Electroplated diamond cutting discs : the head through the process of plating powder adheres to the substrate.

Characteristics of the diamond wheel to decide what

Diamond Wheel is a highly professional product, very few non-professionals for its understanding. Characteristics of the diamond wheel to decide what the majority of users are concerned , but also troubled by a user of important issues. Professionals that features a good diamond wheel is determined by the following factors:
By the characteristics of the abrasive wheel , grain size, hardness , binders , shape and other factors to determine abrasive grinding wheels  the size of the abrasive particle size selection , primarily related to the surface roughness and productivity . When roughing , grinding margin, requires a larger surface roughness values ​​should be used in coarse grains . Because coarse grains , large pores , grinding depth can be larger wheel clogging and fever. When grinding , margin is small, requiring a lower roughness values ​​, you can select finer grit . Generally speaking , the more fine abrasive grinding surface roughness as possible.
Concentration of diamond grinding wheel selection we understand the concentration of diamond grinding it? Refers  masonry drill bits to the concentration of the abrasive layer of the abrasive content . Today we have to say is how the concentration of diamond wheels were chosen , I hope you will like the following content.
① diamond grinding wheel generally 50 % -100 % concentration ; most 75% , the time required to finish higher than 75 %, forming the grinding wheel and requires a long life , can be 100% or more ;
② diamond products in general use 25% -150 % concentration ; cutting blade which coarse-grained , concentrations are concrete saws  generally higher than at the end , that is 25-50 % higher fine-grained ; while other metal bonded grinding wheel generally requires concentration to 50 % to 100 % concentration . Overall, with a higher concentration of coarse , semi- fine grinding with a moderate concentration , and grinding and polishing with a higher concentration .

Resin grinding wheel can not be stored in damp places

Insist on using the FIFO principle , be used during the best use to ensure wheel, resin grinding wheel use during the warranty period , if more than one year will need re-testing its strength and appearance , may continue to use the check. Wheel, resin grinding wheel requires a full , tight packaging , so as to ensure that transportation to and from the course without collisions. During transport needs careful not to get wet , away from alkalis items. Resin wheel to wheel and usually square and placed neatly , try  concrete ring saw not to tilt, do not let their pressure and prevent deformation. Wheel in the store when the use of wooden pallets Gechao mopping -out , avoid direct contact with the ground , from the ground requires 10cm to 15cm, the maximum height does not exceed 1m. The company has advanced production equipment and first-class technology . Product quality and perfect after-sales service , the main production and operation : ceramic grinding wheel, resin grinding wheel , abrasive series and other electrical products.
The wheel up from the melt rotation , relying on rotating grinding wheel blows excess impregnant . Whetstone holding abrasive grinding wheels  time in the air for 1-1.5 hours . Wheel according to this specification discard excess impregnant not formed on the diamond trimming the tumor , while the grinding surface of the plug is not greasy , and will not produce burns on the surface to be ground . Vintage stearyl wheel and immersion treatment is sulfur impregnation of the substrate to process a variety of wheel technology, can improve grinding performance, but there are some defects in the process of handling the final result is often used to reduce the effect of wheel . Our analysis of the reasons that these components can form a homogeneous melt , stearyl distributed above and below the sulfur distribution in  tile cutting blades contrast , modern technology is dipping treatment on the development of conventional treatment , were then placed in was heated to 130-135 ℃ impregnant composition in the melt , from 2.8 rpm / sec to stop the fall of the pulse with the rotation speed of four minutes . This will ensure that all components of impregnation evenly soaked in the wheel .

Detection of diamond grinding wheel performance

Diamond grinding wheel used more widely, it is how prospects like it, let Xiaobian together to explore with you the next issue it. Diamond wheel is grinding carbide, glass, ceramics, gems high brittle material effects tools. In recent years, with the rapid development of high-speed grinding ultra-precision grinding technology, put a higher demand on the wheel, ceramic resin bonded grinding wheel can not meet production sds hammer drill bits  needs, metal bonded grinding wheel because the combination of high strength, good formability, Notable features long life and production has been widely used. Metal-bonded diamond grinding wheel manufacturer in different ways according to the main sintering, plating two types. In order to give full play to the role of super abrasive abroad since the early 1990s, beginning with high temperature brazing process to develop a new wheel, namely single-temperature brazing superabrasive grinding wheels, grinding wheels currently still in the research and development of this stage.
Detection method using DHM-3 test machine, you can use the following two methods to achieve the detection performance of the diamond grinding wheel:
By detecting the consumption of the test piece and the grinding wheel, the wear of both the calculated ratio reflects the diamond polishing tools  performance of the grinding wheel. The steps are:
 ① were weighed and the weight of the wheel test block Gl, G2, and then the wheel and test block mounted on the DHM-3.
  ② Set consumption test block, before grinding to L1, after grinding to L2.
 ③ wheel set line speed test block wobble.
 After the touch screen said data set to open the equipment operation; ground when the test piece is set to a minimum when L2, DHM-3 automatically stops running and the running time of the record process. At this point, remove the wheel and test block, and then were called whichever weight G1 ', c2', wear ratio calculation.
Through attrition ratio reflects the grinding wheel performance. Wear ratio is smaller, more wearable wheel. Running time core bits for concrete  mainly reflects the sharpness wheel, when asked to run shorter, indicating wheel more sharp.
When asked by detecting running performance reflects the diamond wheel grinding wheel. Through experimental study, we found that the more appropriate square enamel Taiwan prosecutors guillotine ceramic diamond grinding wheel and grinding wheel performance ceramic CRN, because these two resin diamond grinding wheel to abrasion than much consumption can therefore be ignored wheel ship

How to avoid the cutting process burns

The question now is how to avoid burns during cutting , the low cutting efficiency.
The first is whether the choice of wheel hardness is too high or too bottom , should burn microstructure appears too high , can not accurately test the organizational structure of material errors. Should the hardness appears over the bottom end of the cutting efficiency , waste cutting disc . How can the cutting process does not burn and sharp, the diamond blades  hardness of the material needs to be used correctly detected , and the cooling fluid.
 Followed by the selection of cutting slices of raw materials , alumina material of choice for cutting metal materials , cutting non-ferrous metals and non-metallic materials of choice for silicon carbide material. Because the cutting metal material with no chemical reaction with the metal alumina material chemical composition, facilitates the cut . Non-metallic and non-ferrous metal chemical activity of small, silicon carbide material itself chemically active than the alumina , better cutting performance , small burns , wear and small .
 Once again, the particle size , particle size selection in favor of a moderate cut . If the request should use dry cut blades  sharp coarse granularity. If you require high precision cutting , partial fine granularity should be used abrasive .
 In short , the problem of the cutting process in metallurgical samples to the hardness of the material before and determined in the selection of cut pieces . In the selection of the targeted cut sheet material. Unlike ordinary metallurgical cutting metal cutting , common metal not require more than you can burn off just durable resin grinding wheel cutting disc quality analysis resin grinding wheel cutting disc with ceramic small wheel , super oil stone , plated grinding wheels, abrasive resin ( superhard and Cape mill ) products, suitable for business investment , marketing is not difficult , most can be said cottage , less investment , less employment , small footprint, simple process , which produces high- quality products with stable quality there are some difficulties, only regular visits to customers , invested research and development of new products , a lot to learn advanced technology to the workshop to develop into a real business.
    ( 1 ) Abrasive material: Common abrasive cutting wheels have cut brown jade (A), white fused alumina (wA), black corundum (BA), silicon carbide (c) , the most commonly used is corundum, corundum hardness because high , high toughness and shape , applicability and low price compared to other abrasive characteristics . Corundum their reduction in the adequacy of primary smelting and secondary sand sand , mainly in the chemical composition : Al2O3 content level sands ≥ 94.5; Al2O3 content of 94.5% of secondary sand ; generally around 85% and Fe2O3 content of 4-5% ; therefore stone polishing pads  lower than the hardness of the secondary level sand sand , but the price is also low ; corundum for a variety of carbon and alloy steel processing in general ; higher than white fused corundum hardness, brittleness large , grinding heat is small, because the price is high , the thermal deformation of the workpiece requires hours , and it also has a special material is used as an abrasive mix processing ; Al2O3 corundum content in the 70 ~ 85%, Fe203 content of 7-9 %. low hardness , cutting forces poor, but the price is cheap ; tall black silicon carbide hardness and brittleness good , sharp cutting edge , good self-sharpening properties, good thermal conductivity, have an advantage in terms of processing non-ferrous metals , plastics , rubber and cast iron .
 2 ) Abrasive Grit: Common particle size : 22 # -80 # , fine granularity low cutting efficiency.
 3 ) Wheel hardness: Hardness used : P, Q, R; N, S; hard wheel generally used to reduce grinding wheel wear. The hardness number of the binding agent , the density of the molding , sintering temperature and sintering time were controlled .
 ( 4 ) binders:
 ( 5 ) Organizations: cutting wheels should be slightly larger number of organizations to improve cutting efficiency : too much strength and influence , often organized No. 3 to 7 . Forming firing ( also called hardening ) the impact of technology on the cutting performance :
 ( 1 ) Molding are: hot , cold, rolled three methods. Thermoforming method required little pressure. Cutting sheet molding density, high hardness , strength ; multi-purpose hot pressing in northern China ; advantage of cold pressing method is that when the heat source is not required for grinding various binding agents ; multi-purpose cold southern China Law ; rolling law required energy is small, small molding density, low efficiency , are less common . Generally without enhanced network has thin wheel and export resin piece wheel with Bo .

Ultra-thin diamond grinding wheel series use

Thin diamond grinding wheel diamond grinding wheel is used on the basis of common technology, then after selection through the use of diamond powder metal contact made ​​of ways . A variety of hard concrete core bits  and brittle so it can cut grooving data , such as : a variety of silicon , germanium , ferrite, glass , lithium niobate , gallium phosphide ( diamond wheel ) , lithium tantalate , phosphorus arsenic gallium , gallium arsenide , all kinds of ceramics. Which has high strength and ultra-thin diamond grinding wheel tolerance , high precision, ultra-thin and other features .
 Ultra-thin diamond grinding wheel series is a fact that thin ring. Which will demand pick appropriate scale flange can use , through the use of edge wear after assuming full circle may have been destroyed after the blade , then it can be swapped into a smaller flange can be sustained by trimming after use can be described as very economical. Just simply use another fine grinding wheel flange, then we can get the best cut effect. So  diamond blade saws the use of diamond grinding wheel conditions are what it ?
1 cut diamond grinding wheel speed is necessary more than 80 m / s ;
2 cut diamond grinding wheel normal speed ( to be cut speed ) based on the information and cut precision cut demand conclude , usually 0.5 to 200 mm / seconds ;
 3 cut diamond grinding wheel when it is necessary to water cooling, cooling water flow rate is not less than 2.4 l / min ;
 4 cut diamond grinding wheel grinding wheel thickness and depth of cut based on information determined . Maximum depth cbn wheels  of 3 mm incision is usually within ;
 5 new sand grinding wheel before use is necessary to open with a special marking plate edge marking .
 6 films selected diamond grinding wheel , in order to ensure the best cut effect ( glass grinding wheel ) cut data based on different needs to select the appropriate grit size grinding wheel .

How to replace the worn drill

Bits in underground work after a certain time, scraper blade drill a smaller diameter, shorter, blunt, rock crushing capacity will become weak, progress slowed down. Tags: Geological coring drill bit concave three wings
Bits in underground work after a certain time, scraper blade drill a smaller diameter, shorter, blunt, rock diamond bandsaw blades  crushing capacity will become weak, slowed down progress; cone drill because tooth wear erosion, bearing damage, can cause cone rotation is not flexible or cone stuck, the torque increases, if not promptly fall from the cone accidents will happen; diamond drill due to the heterogeneity caused by the formation of the PDC drill occurred crack, break, out , also makes drilling footage slower. To speed up the whole well drilling speed, must be replaced with the old drill and drill bit is a few hundred meters to several kilometers underground, how to replace the drill rig workers do?
Drilling rig power driven turntable, kelly, drill and drill bit rotates through observation instrument ground rig drill underground work, as consolidated judgment, if that bit has been worn, replace the drill bit should immediately stop drilling . After stopping drilling to  tile cutting blades continue to maintain the drilling fluid circulation for some time, the purpose is to adjust the performance of the drilling fluid and the cuttings suspended in the fluid out of the ground, the loop so that the new wellbore wall remained stable, while also To carry out routine inspections of drilling equipment. Workers use derrick drilling crown block, traveling block and hook, according to the height of the derrick by column (generally composed of two or three drill) from drilling wells up out of all. After the drill column from the discharge order in the derrick, the proposed downhole drill string while continuing to use the drilling pump perfusion fluid annular space, the  concrete cutting blade purpose is to keep the wellbore fluid level does not drop, the wellbore pressure to balance the formation pressure to prevent borehole collapse or underground formation fluid into the wellbore. Meanwhile, we should pay particular attention to the reduced diameter borehole sticking may occur, the operator must be strictly controlled to enhance speed. All within the wellbore drill pipe, drill collars, after starting out, the need to replace the drill will also act out the workers after removing the old drill press fitted with the new drill down to the original column order can be restored after drilling wells .

electroplated diamond

 The main difference is the type of binding agent: resin bonded diamond grinding wheel mainly phenolic resin and a small amount of metal powder as a binder, and electroplated diamond grinding wheel is a crack chaser  method by electrodeposition of nickel-cobalt alloy is deposited on the metal substrate surface and fixed to a diamond abrasive wheel production process.Their performance on the main difference is:1, in the processing efficiency, due to the use of higher grade plating abrasive grinding wheel and only one layer of abrasive, thermal performance and so have their own advantages, so the more efficient processing of electroplated diamond grinding wheel;
2, service life, only one layer  concrete core bits of abrasive grinding wheel plating, the plating wheel life will be inferior resin diamond grinding wheel;
3, machining accuracy, surface roughness of the workpiece the impact, the same case size, plating out of the surface roughness of the grinding wheel to be worse.Second, at the same time, but also because it has a fast heat dissipation characteristics, so in grinding large number of heat-sensitive materials, thin-walled workpieces and dry milling process (eg rail grinding carbide cutting tools and machine tools, etc.) with good results.

Diamond saw blade consists of two parts; the base body and head

 Diamond saw blade is a cutting tool, widely used in stone, ceramics and other brittle materials processing. Diamond saw blade consists of two parts; the base body and head. Head substrate is bonded to the main support part and head is in the course of the part from the cutting, head are  carbide grinding wheels constantly in use and consumed, and the base body is not, the cutting head is able to play the role because it contains diamond, diamond hard as the most material, which cut the tip friction object to be processed while the diamond particles from the metal inclusions inside the tip. In use, the metal matrix with the consumption of diamond, the ideal situation is generally a metal carcass consumed faster than the diamond, so that the sharpness of the blade can ensure head while ensuring a longer life span, the middle part the matrix is ​​generally Mn steel. outer part is the head.
Classification of diamond saw blades
More and more industries in the production  turbo blades process using a diamond saw, with industry consolidation segments, diamond saw blade types are becoming increasingly refined.
I. manufacturing technology Category:
A sintered diamond saw blade: sub cold sintering and hot pressing two kinds, pressed sintering.
2, the welding diamond blade: high-frequency welding and laser welding of two types, high-frequency welding by melting the tip and substrate media are welded together, the laser welding head by high temperature laser beam melts the edge contact with the substrate forming a metallurgical bond .
3, Diamond Saw Blade: the head is attached to the powder by a plating method on the substrate.
Two appearance Category:
A continuous edge blade: Continuous serrated diamond saw blade, usually produced by sintering method, commonly used as a basis for  wet saw blades bronze binder matrix material, cutting water to be added to ensure the cutting effect, and will be useful for laser cutting head gap species.
2, blade-type blade: serrated disconnected, cutting speed, suitable for dry and wet cutting method.
3, turbo saw blade: 1,2 combined with the previous two advantages, sawtooth-shaped uniform continuous presence turbo punch, improved cutting speed and increase service life.

Diamond cutting wheel grinding characteristics

Diamond thin cutting wheel is mainly used for fine groove and cut close , generally deep creep feed grinding method . With grinding depth, feed rate is small, the grinding wheel and the workpiece contact area, narrow kerf , metal removal rate, grinding , high precision, good surface quality and material utilization characteristics. The polishing pads for granite  general rule is as follows:
1 ) Overall wheel cut thin ( more below 0.5mm ) , small diameter (20-100mm), fine particle size , size and shape and position precision , light weight , generally used in the high- speed conditions . Average speed of 5000-40000 rpm.
2 ) . Matrix-type cutting wheel mostly thick (0.5-2mm), diameter (100-200mm), coarse granularity , the accuracy is low, generally used for lower -speed large depth of cut conditions. Average speed of 3000-10000 rpm. 3 ) ultra-thin cutting wheel to use more fine-grained , and generally thinner grit size of its correspondingly thinner, good surface quality . However, the finer abrasive particle size decreased sharp cutting corresponding to correspondingly reduce the feed rate to accommodate the grit size machinability . 4 ) ultra-thin cutting wheel cutting depth is generally cut parts by the user according to fixed , the cutting mostly used creep feed grinding process , the depth of a cut to the . Such as thin cutting wheel , cutting conditions are poor ( mostly three face contact with the workpiece ) , making it difficult to heat , so to increase ( flow, pressure ) cooling the cutting area .
 5 ) When the cutting wheel at the customer has just appeared on the machine does not move or cut the workpiece chipping , the proposal to increase the cutting speed or decrease feed rate ; when cut after Plate Compactor  a period of time does not move or chipping , it is recommended to use Whetstone appropriate granularity on the surface of the blade wheel to adjust its sharpness .
 6 ) . Workpiece surface quality and cutting performance mainly with thin cutting wheel for abrasive particle size , particle size finer surface finish processing the better . Simultaneously with the workpiece material , hardness, cutting the amount of machining conditions , processing requirements and other factors are also related.
7 ) Ultra-thin cutting wheel factory has been carried out before the general shaping and the blade , users can directly use . If you need further surgery, recommended green silicon carbide or corundum stone, cutting wheel size selected coarse granularity than 1-2 numbers ; if you  sds hammer drill bits need further used for a period after the blade or the blade , it is recommended to use green silicon carbide or corundum Whetstone, cutting wheel size selected fine granularity than 1-2 number or the same number can be.
8 ) general but also with cutting material to be processed , hardness, precision machining requirements related to the proposed initial use of the best in the user's original conditions, do not easily change cutting .
9 ) to the user condition is also a major factor affecting the cutting performance , especially in the spindle axis moving string , runout , the flange parallel, have directly affected balancing precision cutting wheel cutting precision .

performance of cutting tool materials - metal-ceramic

Cermet (Cermet), also known as titanium-based alloy (also called it as "porcelain gold", "Tao Jin," etc.), it has excellent mechanical properties and high temperature performance, as its name implies it, has both ceramic (Ceramics) materials with high hardness, but dry polishing pads  also has a metal (Metal) material strength and toughness, and the price is relatively cheap. For a long time, cermet cutting tool materials applications as far as widespread as other similar carbide. In recent years, metal ceramic tool materials development and application of gradually be taken seriously, also expanded its scope of application. 2 Performance analysis and comparison of cermet
Cermet sintered material with other commonly used - carbide and ceramic, the main chemical composition, temperature performance, and other mechanical and physical properties.
Cermet have the following performance characteristics.
High hardness and high temperature hardness
Tool flank wear mainly by friction between the tool and the workpiece caused by the relative motion, and the tool is directly related to the hardness and high-temperature hardness. Metal ceramic blade, high hardness, good red hardness, so then flank wear better. High hardness but also improve the wear resistance of the tool rake face an important factor.
High surface free energy of the low
Materials, surface free energy and its enthalpy, surface tension, and so on, is the characterization of surface properties of materials based on indicators, which can characterize the  sds drill bits material surface chemical stability under high temperature conditions, the surface free energy of the negative material, the greater the more stable chemical properties. Surface free energy value is calculated as DG DG = nu ∫ w dE dr
2 l0 dr
Where: E - interatomic potential
l0 - stable union state atomic spacing
nu - material damage cracking unit area required to pull a combination of atoms
r - the distance between atoms
Cutting steel, the tool flank wear in front of the main form of crater wear, the wear rate of the tool material chemical stability under high temperature, molten material into the tool material in the iron solubility of other closely related. As cermet surface free energy, into the molten iron solubility and diffusion reaction between materials is lower than cemented carbide, cermet tool rake face so crater wear resistance than the diamond discs  ability carbide.
The lower surface free energy (DG negative large), better chemical stability, materials and the stronger the antioxidant capacity. Tool wear occurs mainly in the boundary depth of cut at the boundary in contact with air, where the oxidation-shaped groove is formed easily intense wear. Cermet superior antioxidant properties of carbide. Figure 3 shows the NX33 P10 carbide cermet tools and the tool to cut the workpiece under the same processing conditions due to differences in tool boundary wear surface quality differences. The figure shows the boundary cermet tool wear, good surface quality; boundary carbide tool wear and poor surface quality.

Hardness and wear resistance

Hardness and wear resistance: Diamond is saturated and having a directivity combine covalently crystal, it has brick saws  a veryHigh hardness and wear resistance, is the hardest known substance in nature.Application:
A mechanical processing industry
Diamond abrasive effects are grinding carbide tools. Sharpening carbide turning, every mill in addition to the metal needs to consume 1g GCAbrasive 4-15g, while the diamond consuming only 2-4mg.
2 Electronics Industry
Precious hard and brittle semiconductor materials such as silicon, germanium, gallium arsenide, etc. For small pieces made of a semiconductor device, to be cutAnd grinding. The metal drill bits  most appropriate method using a diamond cutting blade machining. With diamond paste polishing a semiconductor materialMaterial, not only efficient, but also can achieve the highest level of surface roughness Ra0.006um.
3 optical glass and stones processing industry
Before the use of silicon carbide processing optical glass, low efficiency, poor working conditions. Now all using diamond abrasive machiningIncluding cutting, nesting, cutting, milling and convex and concave surface grinding.
4 drilling and mining industry
In the oil, coal, metallurgy, geology exploration drilling and exploitation, extensive use of diamond drill bits.
5 construction and  metal grinding wheel building materials industry
Marble, granite, artificial cast stone, concrete building materials, cutting and grinding, the extensive use of gold ,Diamond tool.

vitrified diamond wheel diamond and ceramic binder

Natural diamond tools currently used mainly for copper and copper alloys and gold, silver, rhodium and other precious metals, and special parts of the ultra-precision mirror processing, such  granite blades as a disk recorder, an optical mirror, a polygon mirror and the second curved mirror and so on. But its crystalline anisotropy, the tool expensive. PCD performance depends on the content of diamond grains and cobalt, cemented carbide tool life (WC substrate) of the tool 10 to 500 times. Mainly used for a variety of non-ferrous metals such as turning of aluminum, copper, magnesium and its alloys, tungsten carbide and wear strong fiber reinforced plastic materials, metal matrix composites, wood and other non-metallic materials. When cutting speed, feed rate and depth of cut depends on processing conditions and the hardness of the workpiece material.
Vitrified diamond grinding wheel with diamond and vitrified common characteristics, and general corundum, silicon carbide abrasive compared to its strong grinding, grinding temperature is relatively low, abrasive wear is relatively small; can be adapted to a variety of The role of the cooling fluid; grinding abrasive good shape retention, high precision grind the workpiece; abrasive there are more pores, grinding and heat conducive chip, clogging, easy to burn the workpiece; mill with  glass blades good self-sharpening, finishing a long time interval, trimming easier. Therefore, vitrified diamond grinding wheel used in some foreign countries is increasing.Synthetic polycrystalline diamond compact (PDC) properties and applications close PCD tool, mainly used in non-ferrous metals, tungsten carbide, ceramics, non-metallic materials (plastic, hard rubber, carbon rod, wood, cement products, etc.), composite materials such as cutting, gradual replacement carbide cutting tools. Because the diamond particles bonded to ask some residual metal and graphite, in which the bonding metal or showed coalescence vein-like distribution state will reduce tool wear and life. In addition there is a metal residue solvent, solvent metal in direct contact with the diamond surface. Lower (PDC) oxidation resistance and tool heat resistance, the cutting tool is not stable enough. Thick Diamond Tool preparation process is complex, because of the sds plus drill bits  low melting point metals and their alloys and diamond has a high interfacial energy between. Diamond is difficult to be generally low melting point solder alloy infiltration. Weldability poor, difficult to produce complex geometry tool, it can not be applied TDF welding tool in high-speed milling. Diamond-coated tools can be applied to high-speed machining, because in addition to diamond coated tools have excellent mechanical properties, diamond coating process can be prepared any complex shape cutters for high speed machining aerospace materials such as aluminum alloy and refractory processing of non- metallic material such as graphite electrodes.

grinding wheel roller pores choice

Suitable for large pores rubber roller grinding wheel Grinding coarse particle size generally use 45 # -60 #, 80 # grinding wheel selection; but wide face wheel (A803S grinder) rubber roller grinding wheel size can only use 45 # -60 #, this is because the cbn grinding wheels  polishing process A803S grinding roller surface of the polishing wheel surface is always in contact with, the heat dissipation is not easy polishing, use a large wheel size, enabling the heat, but is conducive to reduction roller surface roughness.
Grinding wheel and abrasive particle size distribution of the state for the quality of sharpening roller is very important, small size, tight grain distribution, the  diamond grinding wheel wheel in small pores, tempered heat generated when loss is not easy, the light effect roller surface roughness degrees, severe damage to the surface of the roller organizational structure, so that the physical and mechanical properties of roller down.
In the polishing process, the polishing dust is often adhered to the rubber surface and the  industrial saw blades abrasive surface clogging the pores of the wheel, there is no space between the grains, loss of cutting ability. With high hardness, well organized, fine grain size of large pores wheel most prone to clogging, which is often trimmed wheel (commonly known as copy wheel) causes. Experimental comparison shows that the large pores 45 # 60 # wheel than twice the length of use of time;'s four times longer than the 80 #; than 40 times the length of 120 #. Ie the same amount of grinding roller; 45 # of dressing a grinding wheel 20 days; 60 # of 10 days finishing time; 80 # of five days trimming once; 120 # of one day to the secondary dressing. So grinding rollers for general use 80 #'s more applicable in wheel dressing cycle, both to meet the accuracy requirements of sharpening roller. Roller can ensure a good surface state.