The super-hard tool is mainly made of diamond and cubic boron nitride. Among them, synthetic diamond composite (PCD) tools and cubic boron nitride compound (PCBN) tools dominate. Many cutting concepts, such as green machining, grinding by car, grinding by grinding, hard machining, high-speed cutting, dry cutting, etc., are all due to the application of super-hard tools, so super-hard tools have become indispensable in machining. Missing important means.

With the rapid development of manufacturing industry, the rapid development of CNC machining technology and the universal use of CNC machine tools, the production and application of super-hard tools has become more and more extensive. PCD and PCBN tools have been widely used in traditional fields such as machinery, metallurgy, geology, petroleum, coal, stone, and construction. High-tech fields such as electronic information, aerospace, defense and military work have greatly promoted the rapid development of cutting and advanced manufacturing technologies. With the development, the market has also expanded rapidly. At present, China's PCD, PCBN \ CBN annual output of 400,000 cutting tools, sales of less than 20,000 yuan, while the authoritative department's investigation shows that the potential market sales of two kinds of tools will exceed 1.5 billion US dollars, can be said that the ultra-hard tool industry Great promise.

In spite of this, for superhard cutting tools in China, there is still a lot of work to be done in order to catch up with this rapid development. As superhard tools are mostly high-end products, manufacturing strength is high, and the technical threshold is high. Controlled by foreign manufacturers, China has only a small share. According to the survey of manufacturers and downstream users in the ultra-hard tool industry, the top companies in the global market share of composite superhard tool materials are all foreign companies, namely Element Six (30%) and DI (20%). ), Japan's Sumitomo (18%), South Korea's Nikko (9%), MegaDiamond (4.5%), TomeiDiamond (4.5%), Dennistools (4%), and several big companies accounted for 90% of the market. It can be said that China's super-hard tools are still in the initial stage, and there are some problems that restrict the development of the tool companies:

1. Domestic PCD, PCBN material tool material uniformity is poor, and its tool quality is not stable.

2. The domestic superhard tool sharpening manufacturing equipment technology is backward, and it is still unable to provide tool sharpening machine tools comparable to foreign companies.

3. China's ultra-hard tools have not yet become standardized and serialized, resulting in poor product quality consistency.

4. The basic research on the application of superhard tools is not deep enough, it is not systematic enough, and it can not correctly guide the correct and rational application of downstream companies.

5. Superhard tools in China also have a series of problems such as the connection and clamping method with the machine tool, the blade clamping mechanism, the tool material and structure, the tool clamping measures in the high-speed spindle, and the dynamic balance of the rotary tool.

6. The high-precision and complex structure of super-hard tool design and manufacturing technology does not pass, such as superhard cutting tools for machining automotive, aerospace key parts Chinese companies can not manufacture.

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