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 .

Line speed is not high , an increase in cutting efficiency , will reduce the life of the blade

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 masonry drill bits  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 .
Common materials saw feed speed unit : mm / mi 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 turbo blades  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. the blade rotation direction of the 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 tct circular saw blade  smooth cutting . When using reverse cutting, cutting depth to be reduced , generally reduced to shun cutting 1/3-1/2  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.

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.

More extensive use of diamond saw blade

More extensive use of diamond saw blade, in all fields of social construction plays a relatively important role, therefore, for the use and preservation of diamond saw many users are not very understanding, this concrete core bits  will affect the performance of the blade and the use of time, Please note the following points of our customers.
Diamond saw blade steel substrate 45 in a specific environment, such as air is very humid, air containing acidic gases or diamond cbn wheel  alkaline substances, can lead to accelerated oxidation corrosion of the blade surface, there is no use will rust, so , saw not on the environment, should be sealed up and stored in a dry place. The larger diameter of the saw blade (300mm or more in diameter), when the stored preferably coated with a layer of oil, in this case, the blade will not decrease the quality of the performance.
Some diamond saw blade thickness is  concrete vibrator relatively thin, mainly used in special places, the matrix is ​​relatively weak, so the blade can not be stacked when stored, but can not place items above in order to avoid blade deformation, affect the results.

diamond grinding wheel wear problems

Diamond Wheel inevitable after prolonged use wear and damage , this time we need to staff promptly replaced , here we sds hammer drill bits  come briefly under diamond wheel replacement note:
Wear problems :
Any wheel has its use wear certain requirements to achieve a certain degree of wear must be re- replacement of the grinding wheel . Not in order to save material , it requires the use of masonry drill bits  ultra- wear , which is a very unsafe violations . General rule, when the wheel wear to chuck diameter than the diameter of 10mm, it should be replaced with new wheel .
Valid question: from the Treasury brought out a new wheel is not necessarily qualified wheel, or even buy a new wheel from the factory are not necessarily qualified wheel . Any wheel has its certain expiration date, the expiration date of use, it is qualified wheel ; than valid to use , it is not necessarily qualified wheel . Statutes provides that " wheel should be used within the validity period , resin and rubber bonded grinding wheel storage after one year must be approved by rotation test , those  bandsaw blades who pass before using ."
Texture questions:
During use , if found partial wheel cracks should immediately stop using and re- replacement of the grinding wheel , grinding wheel to avoid crushing injury accident .

how hard diamonds and diamond physical properties

Modern science and technology, the means to explore the formation of diamond provides new ideas and methods. Diamond is the hardest, most simple ingredients gem, which is composed of carbon atoms, with a cubic structure of natural crystals. Its composition and our diamond hole saw  common coal, pencil lead, and the same constituent sugars, carbon at a higher temperature and pressure, the crystallization of graphite (black), and in high temperature, high pressure and reducing environment (usually it is one kind of oxygen environment) in the crystallization of precious diamonds (white). In order to facilitate the understanding of the origin of diamonds, first look at the original rock containing diamonds.
Since diamonds were discovered in India, we have been hearing people in the river, riverside picked up the story of the diamond, which is due in the river somewhere upstream of diamond original rock, weathered, broken, with the water being brought diamonds to downstream areas, than the major diamond buried in the gravel. What is the original rock diamonds? 1870 people on a farm in South Africa dug in loess diamonds, diamonds  carbide saw blades dug from the riverbed thereafter transferred to the loess, loess Here is rock hard, dark blue, it is the diamond original rock - kimberlite (kimberlite). What is kimberlite?
Kimberlite is formed deep in the earth, contains a lot of carbon dioxide and other volatile components of alkaline ultramafic volcanic rocks often contain such deep from the earth peridotite, eclogite fragments, the main mineral ingredients include olives Stone, phlogopite, carbonate, pyroxene, garnet and so on. Studies have shown that the formation of kimberlite magma deep in the earth 150 km or less. Because of this rock was discovered first in Kimberley, South Africa, so named by the names.
Another original rock containing diamonds known lamproite (lamproite), it is a too alkaline magnesia volcanic rock, mainly composed of leucite, volcanic glass formed may contain pyroxene, olivine and other minerals, typical origin of Western Australia Argyle (Argyle).
Scientists from around the world through a different pair of diamond mines and mineral inclusions natively study found that diamond formation conditions generally pressure 4.5-6.0Gpa (equivalent to 150-200km depth) and a temperature of 1100-1500 degrees Celsius. Although in theory, diamonds can be formed in various periods of history of the earth / phase, while current exploitation of mines, most of the diamonds formed mainly in the 3.3 billion years ago and 12-17 million years these two periods. Some, such as the South African diamond age of about 4.5 billion, indicating that these diamonds in the Earth already begun shortly after the birth of the deep in the earth crystal diamond is the world's oldest gems.
Diamond formation requires a long historical process, which is mainly produced from diamond on Earth ancient stable continental regions can be confirmed. In addition, the stars on the planet extraterrestrial impact, resulting in instantaneous temperature, high pressure, but also the formation of diamonds, such as 1988 years ago, the Soviet Academy of Sciences reported that diamonds were discovered in meteorites, but this effect has no economic value of a diamond formation.
Rare diamonds mainly in two types of rocks, a class is peridotite categories, one is the eclogite, but only the former has economic significance. Diamond-bearing peridotite, so far discovered two types: kimberlite (kimberlite) (name derives from South Africa was a place name - Kimberley) and lamproite (lamproite), both in the rocks are made from volcanic eruptions effect generated deep in the earth's rocks formed by the volcanic activity was brought to the surface or shallow earth, this magmatic rocks mostly tubular output, so called "tube mine" (ie, primary ore).
Diamond-bearing kimberlite or lamproite exposed at the surface, through the wind and rain outside forces such as the role of Earth's weathered, broken, washed in water, the crushing of the original rock drill is brought to bed together, and even the coast Strip the  hole saw blades product down, forming alluvial sand deposits (or secondary deposits).
Just how hard [Diamond]
Diamond is the hardest substance in nature, is a Mohs hardness of 10 unique mineral, it is known as "the king of hardness." Its anti-friction hardness of corundum 140 times, 1100 times more than quartz and thus its unparalleled hardness can be imagined.
It should be pointed out: the hardness of diamonds here that particularly large, it is the ability to resist external forces scored; but it also has a brittle, afraid to hit, strike it or will stumble along its cleavage after crushing. So even though the diamond is the hardest substance in nature, but it is also possible to use a hammer to crack it. Therefore, wearing diamond jewelry, you should pay special attention to protection.

diamond cutter tool wear and process parameters

Diamond hard chemicals belonging to a substance, so the diamond tool is manufactured so hard, diamond tool wear and tool process parameters and the coordination between process parameters have a great relationship, it is necessary to process parameters optimized.
(1) Processing Conditions
Because diamond tool wear their concrete saw blades  load status are closely related, so the processing conditions will have a significant impact on wear. Daixiang Guo and other analysis of engineering ceramic diamond wheel cutting wheel life when the process parameters on the impact that when the other parameters constant, corresponding to the depth of each cut exists an optimum wheel speed; when the cutting depth and the wheel speed is constant, there is a optimum feed rate; various process parameters on the grinding wheel wear effects radial order was: wheel speed - cutting depth - feed speed. Tool wear and machining process parameters and the core drill bits  coordination between process parameters have a great relationship, it is necessary to optimize the process parameters. ZJPei analyzed the situation when grinding wafers, the following conclusions: When the wheel speed is 4350rpm, chuck speed is 590rpm, the grinding force increases, when it reaches a certain peak, back to a lower value, and Click cycle continues, gradually become dull wheel described, when the grinding force reaches a certain value, broken grains; when the wheel speed is 2175rpm, the chuck speed of 40rpm, the grinding wheel when the grinding force is smaller broken. Therefore, the grinding force is substantially constant and high wear rates.
(2) Work material
Different workpiece materials, the sanding belt   fracture toughness, hardness etc difference is large, also affects the properties of the workpiece material wear of diamond tools. It is a professional with a diamond saw cutting tool wear when different stone and said: When cutting hard granite, the diamond saw abrasive wear is mainly macro broken and fall off, because the holding power is not enough, the cutting conditions bad; when cutting softer granite, the full microscopic crystal and abrasive crushing larger proportion, while still high proportion of grain shedding, such wear to keep the blade cutting capacity. XU Xi Peng said: granite in different minerals is to determine the nature and mechanism of deformation failure mode of diamond key. Quartz content is higher, the more intense wear diamond; orthoclase content is clearly high, the sawing process is relatively difficult to carry out; under the same cutting conditions, coarse granularity finer granularity than granite granite more difficult to cleavage fracture occurs.

Three diamond cutting discs are used

Currently used to cut materials whenever compared to diamond hard, diamond cutting disc for abrasive industry is in a high position in the match, although the price is cheap, and grinding cup wheel  trust in the future of the diamond cutting should be performed better experience
    Integration with the domestic market, especially after learning of foreign ancestors craft cutting discs, diamond cutting skills abroad will become more junior.
    Future diamond cutting discs there is a very large market, because the rock-cut diamond cutting tool is most useful, therefore, superficial discussion of stone cutting mechanism and the wear mechanism of diamond cutting equipment, diamond cutting things about the diamond grinding wheel  production and the correct use reasonable means must exist
    Pros and cons of diamond cutting discs varieties often much worse for other cutting material, cutting discs differences with other states with poor qualities of the diamond cutting discs currently abroad or in the sanding belt   discussion behind developed world standards
     In the abrasives industry, diamond cutting discs with a control instrument is universal, its primary notice is diamond cutting discs were faithful reason, rough cutting equipment is very common, so check abrasive industry in the development of particularly wide wide development of space

drill coring range

 At present all of our minimum core drill coring range are 12MM and above, with the largest on the magnetic drill
Drill diameter reached 160MM, if the concrete diamond blades  aperture is small, then I recommend using ordinary twist drill instead. Relatively speaking Why core drill so small it can not do? First, the tile blade  holes by drilling, twist drill has been able to deal with common good. In contrast, the twist is much lower than the cost of the hollow drill bit, drill steel so we did not do the smallest aperture so small. Then why do we do it rail bricks? In fact, in order to solve our twist open a large hole encountered much resistance and developed, so long as we understand this, we also know that, in fact, there is an important reason that the grinding cup wheel  smaller the aperture, But we take the three core drill blade tip the higher requirements, so the production cost would be a corresponding increase, compared to the twist drill, this is definitely select twist drill more.