The use of carbide tools for hard turning, this technology has been developed and popularized for more than ten years, and has obtained huge economic and social benefits. The following takes roll processing and other industries as an example to illustrate the popularization and application of superhard tools in production.

　　Roll processing industry

　　Many large roll enterprises in China have used superhard tools to carry out rough turning, rough turning and fine turning of various types of rolls such as cold hard cast iron and hardened steel, and have achieved good benefits7, improving the processing efficiency by 2~6 times on average, saving 50%~80% of processing time and electricity. For example, the roll mill of Wuhan Iron and Steel Company has increased the cutting speed by 3 times when turning rough and semi-fine iron rolls with a hardness of HS60~80, saving more than 400 yuan in electricity and labor costs, and saving nearly 100 yuan in tool costs, and has achieved huge economic benefits. For example, when our school uses FD22 cermet tools to turn HRC58~63's 86CrMoV7 hardened steel rolls (Vc=60m/min, f=0.2mm/r, ap=0.8mm), the single-edge continuous cutting roll path reaches 15000m (the width of the blade surface wear band after the tip VBmax=0.2mm), which meets the requirements of turning with a wheel instead of grinding.

　　Industrial pump processing industry

　　At present, 70%~80% of domestic ballast pump production plants have used superhard tools. Ballast pump is widely used in mining, electric power and other industries, is an urgently needed product at home and abroad, its sheath and guard plate are HRC63~67 Cr15Mo3 high-hard iron castings. In the past, it was difficult to turn this material with various tools, so it had to be annealed, softened, roughened, and then quenched. After using superhard tools, a hardening process was successfully realized, eliminating the need for two processes of annealing and quenching, saving a lot of man-hours and electricity.

　　Automotive processing industry

　　In the processing of crankshafts, camshafts, transmission shafts, cutting tools, measuring tools and equipment maintenance in automobiles, tractors and other industries, the processing of hardened workpieces is often encountered. For example, a rolling stock factory in our country, in the equipment maintenance needs to process the bearing inner ring, the hardness of the bearing inner ring (material GCr15 steel) is HRC60, the inner ring diameter is f285mm, using grinding technology, the grinding allowance is uneven, it takes 2h to grind well; First, use a superhard tool to process into an inner ring in only 45 minutes.

　　After years of research and exploration, our country has made great progress in carbide tools, but the application of carbide tools in production is not widespread. The main reasons are as follows: manufacturers and operators do not have enough understanding of the effect of hard turning with carbide tools, and generally believe that hard materials can only be grinded; Think the cost of the tool is too high. The tool cost of hard turning is higher than that of ordinary carbide tools (such as PCBN is more than ten times more expensive than ordinary carbide), but the cost allocated to each part is lower than that of grinding, and the benefits are much better than that of ordinary carbide; the research on the processing mechanism of carbide tools is insufficient; Specifications for carbide tool machining are not sufficient to guide production practices.

　　Therefore, in addition to in-depth research on the machining mechanism of carbide tools, it is also necessary to strengthen carbide tools.