the development of cemented carbide products.

1 the development of cemented carbide materials in order to meet the rapid development of high speed cutting technology, various is given priority to with cemented carbide cutting tool material performance has been improving, fine particles, and the development of ultra-fine grain cemented carbide and coating technology in the application of carbide cutting tools pronouncedly improved strength and toughness of cemented carbide material, use it to make the overall alloy cutting tool is gradually replaced traditional HSS cutting tools, to improve cutting speed and processing efficiency by several times, laid the important foundation for the application of high speed cutting. Solid carbide also have been applied in some complicated forming cutter and meet the demand of the diversity of product processing.

Carbide cutting tool materials in the 21st century should focus on development in two aspects: one is fine grains to nanoscale microcrystalline level. Carbide grain size is smaller, the higher the hardness of cemented carbide its wear resistance is better, the higher the toughness and stiffness, so as to expand the scope of its application; The second is using new technology and new technology development of new carbide carbide inner performance and quality. 2 coating technology for the development of cutting tool coating technology in the development of modern machining and the cutting tool plays a very important role, is developing rapidly since its advent, have made great progress in recent years, in particular, chemical coating (CVD) is still the main coating technologies of indexable insert, successively developed medium temperature CVD, thick film 3 oxidation

2 aluminium, new technology, such as transition layer on the basis of improving substrate material, make the CVD coating abrasion resistance and toughness is improved; And physical and coating (PVD) technology has also made significant breakthrough in the structure of coating equipment, technological process, automatic control, etc have made significant progress, developed to adapt to the high speed cutting, dry cutting, hard cutting better heat resistance coating, through to the coating structure innovation, developed nano, multilayer structure such as a large number of new type of coating, greatly improves the coating hardness and toughness.

3 the development of superhard cutting tool material superhard material refers to diamond and cubic boron nitride (CBN), its hardness is several times higher than the other tool materials, diamond is the hardest substance in nature, CBN hardness is second only to diamond. In recent years, the rapid development of superhard cutting tool materials. Diamond cutting tool material is divided into five types: natural diamond (N D), synthetic polycrystalline diamond compact (P C D C/C), diamond film coated tools (CD), diamond thick film cutting tools (FCD) and artificial polycrystalline diamond (P C D). N D crystalline anisotropy, on the use of the knife grinding must choose appropriate direction; Synthetic diamond isotropic, its hardness is lower than N D, but the strength and toughness is better than ND. Diamond tool to effectively processing of non-ferrous metal materials and nonmetal materials. Non-ferrous metals such as copper, tungsten and its alloys, ceramics, hard alloy and all kinds of fibers and particles strengthen composite materials, plastics, rubber, graphite, glass and wood, etc., but avoid diamond cutting steel and other elements of iron group. Cubic boron nitride (CBN) cutting tool materials with high hardness and red hardness, is high speed finish machining or finish machining of hardened steel, chilled cast iron, the ideal of high temperature alloy cutting tool material, due to the CBN cutting tool machining high hardness when parts can obtain good surface roughness, so the C B N tool cutting hardened steel can realize "to cut grinding".

Six star hardmetal dedicated in PDC cutters and high level carbide substrates and discs manufacturing for more than 15 years. our carbide substrates from small to large 72mm.

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China superhard material and the international main gap with the target
High quality large-scale composite film, from the master of information, high quality large diameter compound gap is still very large. G.E companies in the United States can use both sides of the 2 ~ 25000 tons of jacking machine production of large diamond compact ф 100 mm, the quality is stable. But the real use of diamond compact also most just ф (60 ~ 70) mm, but also slowly with six sides top press of China. And most of the domestic application of composite piece in ф (30-35) mm, enterprise development to ф 45 mm, even colleges and universities is the only developed to ф (60-65) mm. , of course, now production has been basically can meet the market demand, in particular, some oil drilling, coal excavating, etc., because in general need to use only ф below 20 mm, and most is only 13 mm ф. But if use requirement in some special cases need big composite films, will feel overwhelmed.

Why large compact become the research problem? Mainly because of its central area and peripheral area due to the synthesis of cavity, pressure gradient, temperature gradient caused by the uneven and so on the design of cavity leads to many problems.

Six star hardmetal to build a new factory specializing in the production of large size carbide composite matrix, has achieved significant progress, its maximum size of the production to have up to 65 mm or even more, to fill the domestic blank.

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The development direction of carbide cutting tool materials and application at present.

The development direction of cutting tool materials and application at present, in the field of aircraft manufacturing, high speed steel cutting tools account for about 60% of the total amount of all kinds of cutting tool always, carbide cutting tools account for about 35% of the total amount of cutting tool, superhard cutting tools (cubic boron nitride, diamond) accounted for less than 5% total all the cutting tool and the future with the airline new materials constantly emerging, the increase of hard cutting, dry cutting application, carbide cutting tools, coated tools, ceramic cutting tool, cubic boron nitride cutting tool and the proportion of polycrystalline diamond cutting tools will be greatly increased.

1 the development of cemented carbide materials in order to meet the rapid development of high speed cutting technology, various is given priority to with cemented carbide cutting tool material performance has been improving, fine particles, and the development of ultra-fine grain cemented carbide and coating technology in the application of carbide cutting tools pronouncedly improved strength and toughness of cemented carbide material, use it to make the overall alloy cutting tool is gradually replaced traditional HSS cutting tools, to improve cutting speed and processing efficiency by several times, laid the important foundation for the application of high speed cutting. Solid carbide also have been applied in some complicated forming cutter and meet the demand of the diversity of product processing. At present domestic gesac measures are useful in xiam special alloy co., LTD., zhuzhou diamond hard cutting tool co., LTD., siping usain bolt process equipment co., LTD., and shaanxi aeronautic carbide tool company can offer carbide cutting tools for the airline industry, its product performance is close to the world's advanced level. Carbide cutting tool materials in the 21st century should focus on development in two aspects: one is fine grains to nanoscale microcrystalline level. Carbide grain size is smaller, the higher the hardness of cemented carbide its wear resistance is better, the higher the toughness and stiffness, so as to expand the scope of its application; The second is using new technology and new technology development of new carbide carbide inner performance and quality.

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