Hard material tool machine has the advantages of high processing efficiency, long service life and good processing quality, the past is mainly used for finishing, in recent years due to the production process of artificial superhard tool material improvement, control the purity of raw materials and the grain size of the composite materials and hot pressing technology, constantly expanding the scope of application, except for the general finishing and semi finishing machining, but also can be used for rough machining, internationally recognized as one of the most promising productivity tool materials to improve the contemporary. The use of superhard materials processing steel, cast iron, non-ferrous metals and their alloys and other parts, cutting speed can be an order of magnitude higher than that of cemented carbide, tool life can be more than several times or even hundreds of times hard alloy. At the same time it appears, the process of the traditional concept of change, often directly to the car, milling instead of grinding using ultra hard cutting tool (or polishing), the hardened parts processing, can be a single step instead of multi-channel processes, greatly shorten the process.
The hardness and wear resistance of diamond material CNC knife set high, effective processing of copper, aluminum and other non-ferrous metals and alloys, ceramics, powder sintering hard alloy, various fiber and particle reinforced composite materials. Diamond, commonly known as diamond, is what we often say about diamonds. Natural diamond deposits have been formed in prehistoric times, and there is no growth rule. "Artificial diamond is mainly used in Yu Jun industry and aerospace industry. Because it is resistant to high temperature, high pressure, the astronaut's helmet membrane, air craft insulation board, high-speed rail sleeper, and so it needs." The chief engineer of Henan Province, diamond and product engineering technology research center the project director Professor Wang Qinsheng said, artificial diamond is widely used in advanced manufacturing industry and modern manufacturing industry, from grinding bone knife dental dental repair knife, cosmetic surgery hospital, auto bearing, electronic components are used to get it. The artificial diamond mosaic of large corrugated sheet, can be used to cut the huge stone and cement road, in geological exploration and oil extraction has also played an important role.
Brief introduction of diamond industry chain: diamond industry chain from top to bottom are graphite, single crystal, polycrystalline powder, composite sheet, diamond products. At present, about 50% of China's single crystal for the production of cutting tools. According to the different application fields of polycrystalline products, polycrystalline composite sheet is divided into: oil open, mine opening, cutting tools, drawing die. Diamond products are divided into single crystal products (abrasives, cutting tools), polycrystalline products (geological drill bits, cutting tools, wire drawing die). The downstream application: abrasive is mainly used in the field of electronic information processing, IC chip processing, automotive engine air conditioning and refrigerator compressor processing, cutting tool; cutting tools are mainly used in stone industry and construction industry; drilling tools are mainly used in mining, oil exploitation is mainly used in lathe tool.
Cubic boron nitride and polycrystalline diamond, is synthesized under high temperature and high pressure, the structure and properties of polycrystalline diamond and also similar, with high hardness, good thermal resistance, small thermal expansion, low density, low fracture toughness. In addition, the cubic boron nitride also has excellent chemical and thermal stability, almost no reaction with the iron group elements, which is better than diamond. Compared with cubic boron nitride and diamond, higher thermal stability, chemical inertness of iron group elements, anti bonding ability, more suitable for processing all kinds of hardened steel, thermal spraying materials, chilled cast iron and HRC35 above the cobalt based and Ni based hard cutting materials. I in industrial developed countries, cubic boron nitride cutting tools have been widely used in automotive, heavy machinery and other mechanical processing industry. Cubic boron nitride cutting tool is suitable for high speed dry cutting, and can be used to speed up the processing of gray cast iron above 2000m/min. Application of cubic boron nitride cutting tools in high speed hard cutting is also more widely, especially in alloy steel finishing parts of automobile engine, such as HRC60~65 between the gear shaft, bearings, and these parts of the past by grinding to ensure the dimensional accuracy and surface quality." As everyone knows, the main component of cemented carbide is tungsten carbide and tungsten is a kind of scarce resources, although our country is rich in tungsten, but according to the current development and use of the degree of tungsten resources will decrease rapidly, some experts predict that over the next several decades, perhaps will be exhausted. Then the new superhard material cutting tool will play a greater role in the future cutting field.