After years of research and exploration, China has made great progress in super hard cutting tools, but the application of super hard tools in production is not widely used. Using super hard cutting tool for hard turning, this technology has been developed and popularized for more than ten years, and has gained great economic and social benefits. It is understood that China superhard cutting tool production application three major aspects: roll roll processing industry, the domestic many large enterprises have service superhard cutting tools of chilled cast iron, hardened steel and other kinds of roll to drought, coarse and fine models, are achieved good hard turning with superhard cutting tool, and the technology after years of development and application, was a great economic and social benefits.
1. Roll processing industry.
Roll the domestic many large enterprises have service superhard cutting tools of chilled cast iron, hardened steel and other kinds of roll to drought, coarse and fine models, has obtained the good benefit 7 average improve processing efficiency of 2 ~ 6 times, processing time and power saving 50% ~ 80%. Such as wuhan iron and steel company roll factory of hardness is HS60 ~ 80 chilled cast iron roll rough cars, half fine cars, cutting speed increased three times, each one roll, save electricity, four hundred multivariate, partners save tooling cost nearly one hundred yuan, has obtained the huge economic benefits. As our school with FD22 cermet cutter turning HRC58-63 86 crmov7 hardened steel roll (Vc = 60 m/min, the f/r = 0.2 mm, the ap = 0.8 mm), continuous roll cutting path of 15000 m (after the blade knife surface wear with the maximum width of VBmax = 0.2 mm), meet the requirements of the car for grinding.
Ii. Industrial pump processing industry.
At present, 70% ~ 80% of domestic ballast-pulp pump production plant has been used for ultra-hard cutting tools. The slurry pump is widely used in mining, electric power and other industries. It is an urgently needed product at home and abroad. Its sheath and shield are the Cr15Mo3 high hard cast iron parts of HRC63 ~ 67. In the past, due to the difficulty of cutting tools for various kinds of tools, we had to use annealing to soften and then rough machining, and then the process of quenching. After the use of super hard tool, a hardening process is successfully achieved, and the annealing and quenching process is eliminated, which saves a lot of working hours and power.
3. Automobile processing industry.
In the automobile, tractor and other industries of crankshaft, camshaft, transmission shaft processing, cutting tools, measuring tools processing and equipment maintenance, often encountered hardening workpiece processing difficulties. Like a locomotive overlook in our country, in the equipment maintenance need to processing of bearing inner ring, the hardness of bearing inner ring (material GCr15 steel) to HRC60, the inner ring diameter f285mm, grinding process, grinding allowance uneven, 2 h to grinding; With the super hard tool, it is processed into an inner ring only 45min.
