Chinas super-hard tool production used in the three



Chinas super-hard tool production used in the three
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superhard cutting tool for hard turning, this technology after ten years of development and promote the use of, access to a huge economic and social benefits. The following roll processing industries, for example, to promote the application of superhard cutting tool in the production.

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roll processing industry

many large roll enterprises superhard cutting tool chilled cast iron, hardened steel and other types of roll shortage of vehicles, crude cars and fine cars, and have achieved good results an average of 7 to improve the processing efficiency of 2 to 6 times the processing time and power savings of 50% ~ 80%. Roller plant such as Wuhan Iron and Steel Company on hardness for HS60 ~~ 80 chilled cast iron rolls roughing, semi-refined car,mad tv cast. cutting speed was increased 3-fold, a roll of the car to save power, time charge for more than four hundred yuan, saving tool costs The last couple of hundred dollars, and has made enormous economic benefits. If my school the FD22 cermet turning HRC58 ~ 63 86CrMoV7 hardened steel roller (Vc = 60m/min, f = 0.2mm / r ap = 0.8mm), the continuous cutting of the single blade roll diameter up to 15000m ( tip flank wear width VBmax = 0.2mm), to meet the requirements of turning instead of grinding.

industrial pumps processing industry

domestic ballast pump manufacturing plant 70 percent to 80 % of superhard cutting tool. Ballast pump is widely used in mining, electricity and other industries, is urgently needed at home and abroad, its sheath, the shield is HRC63 ~ 67 Cr15Mo3 high hard cast iron. A variety of tool is difficult to turning this material, so only after rough annealing softening, and then quenching processing technology. Superhard cutting tool after the smooth realization of a hardening processing, eliminating the two processes of annealing and then quenched, saving a lot of hours and electricity.

automotive processing industry

cars, tractors and other industries in the crankshaft, camshaft, drive shaft of the processing,power cord adapter. cutting tools, measuring, processing and equipment maintenance, we often encounter the problem of hardened workpiece processing. The bearing inner ring in the maintenance of equipment such as of a rolling stock plant for processing the hardness of the bearing inner ring (material GCr15 steel) to HRC60 inner diameter f285mm, and the grinding process, grinding margin uneven. need to 2h to wear good; first superhard cutting tool, only 45min processed into an inner ring.

After years of research and exploration, China superhard cutting tool has made great progress, however, superhard cutting tool in the production is not . Mainly due to the following aspects: production enterprises, the operator of the use of superhard cutting tool for hard-turning effect, poorly understood, generally considered the only grinding of hard materials; that the tool is too costly. Hard turning the initial cost of the tool (such as PCBN expensive than ordinary carbide more than 10 times) higher than the ordinary carbide cutting tools, but sharing a part of even lower cost than grinding, and the benefits of more than ordinary hard Carbide is much better; superhard cutting tool machining mechanism is not enough; superhard cutting tool processing specification is not enough to guide the production practice.

Therefore, in addition to in-depth study on the mechanism of super hard tool, but also the need to strengthen superhard cutting tool.


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