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Problems in Chinese super hard cutting tools


Super hard cutting tool is mainly made of diamond and cubic boron nitride as material, and the tool of PCD and cubic boron nitride (PCBN) is the dominant position. Many machining concepts, such as green machining, machining, grinding, machining, machining, high speed machining, dry machining and so on, have been used as a tool for cutting tools. With the development of science and technology, the rapid development of manufacturing industry, the rapid development of CNC processing technology and the common use of numerical control machine tools, the production and application of super hard cutting tools are becoming more and more extensive. PCD and PCBN tools have been widely used in machinery, metallurgy, geology, petroleum, coal, stone, construction and other traditional areas, electronic information, aerospace, defense and other high-tech fields as well as automotive, home appliances and other emerging industries. Greatly promoted the rapid development of machining and advanced manufacturing technology, market is also expanding rapidly, it is reported, in our country the PCD and PCBN\CBN cutting tool with an annual output of 40 million, sales of less than 2 million yuan, and the authority of the Department of investigation show, two tool sales potential market total amount of excess $15 billion, can say superhard tool industry promising.
In spite of this, but for the Chinese super hard tool, in order to catch this train ride high-speed development, a lot of work to do, because the super hard tool for manufacturing high-end products, high strength, high technical threshold, at present mainly for foreign manufacturers to control, China only a very small share, according to a domestic consulting according to the website of the superhard tool industry manufacturers, downstream users visited the survey found that, in 2009, the composite super hard tool materials market share of top companies for uniform foreign companies, are the elements of the six (30%), DI (20%), Japan (18%), South Korea, Sumitomo in (9%), MegaDiamond (4.5%), TomeiDiamond (4.5%), Dennistools (4%), a few big companies will occupy 90% of the market. It can be said that the superhard tools in China almost in just the start stage, and there are these problems restrict the rapid expansion of enterprises, mainly in the following points.
1 domestic PCD, PCBN material for the poor uniformity of material, the tool quality is not stable.
2.. Domestic super hard tool grinding machine tool manufacturing equipment and technology, still can not provide the equivalent of foreign companies with cutting edge grinding machine tool.
3 superhard tools in China has not yet formed a standardization, seriation, resulting in poor quality and consistency.
4 the application of the super hard cutting tools is not deep enough, and it is not enough to guide the rational use of the downstream enterprises.
5. Superhard tools in China there are still connected with machine tools installed clamping, clamping mechanism of blade, cutting tool material and structure, in the high speed spindle tool clamping measures, rotary cutting tool dynamic balance of a series of problems.
6 high precision and complex structure of the super hard tool design and manufacturing technology, such as the use of automotive, aerospace key parts of the super hard tool Chinese enterprises are still unable to manufacture.
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