Diamond coatings will be widely used in the field of cutting

Abstract Tool coating should not only extend the life of the tool, but also solve the problem of reducing or eliminating the cutting fluid. And should have self-lubricating function. Diamond-like coatings (DLC exhibits advantages in machining certain materials (AlTi and its composite materials), but after years of research...
Tool plating should not only extend the life of the tool, but also solve the problem of reducing or eliminating cutting fluid. And should have self-lubricating function. Diamond-like coatings (DLC exhibits advantages in mechanical processing of certain materials (AlTi and its composite materials), but after years of research, it has been shown that the internal stress of the diamond-like coating is high, the thermal stability is poor, and the catalytic effect between the ferrous metals makes the SP3 structure Three shortcomings such as the transition to SP2 have determined that it can only be applied to the processing of non-ferrous metals, thus limiting the further application of machining. However, in recent years, research has indicated that the SP2 structure is mainly diamond-like coating (also known as graphite-like coating). Layer) hardness can also reach 2040GPa but does not exist with ferrous metal catalyst effect, its friction coefficient is very low and has good moisture resistance. It can be used for dry cutting when cutting. Its life is better than that of non-coated knives. Doubled the increase, there is no problem in processing steel materials, which has caused great interest from coating companies and tool manufacturers. Over time, this new type of diamond-like coating will be widely used in the field of cutting.

The performance requirements of materials are getting higher and higher. Various vapor deposition technologies have emerged in recent decades, with the development of science and technology. The research and application of external engineering technology have made rapid progress. These technologies not only achieve mechanical performance requirements, such as wear resistance, friction reduction and corrosion resistance, but also electromagnetic, optical, optoelectronics, thermal, superconducting biology and other surface-related functional data fields. Appearance engineering not only makes the advantages and performance of low-cost metal materials more advantageous, but also has become an important means to develop various new coating film materials, and has great application potential.

New requirements were placed on the tool. In addition to increasing the service life, it is also required to reduce the pollution during cutting, as the level of the machining industry increases. Use dry cutting whenever possible. When the cutting fluid cannot be completely eliminated, try to make it contain only rust inhibitors and no organic matter, which can greatly reduce the recycling interest.

The milling cutter should also consider its intermittent impact characteristics. Early development of coatings with wear resistance as the main focus point, the working state characteristics of the cutting tool diversity determines the choice of Jiangsu tool coating. Turning holes are different. To improve hardness as the main indicator. Titanium nitride is representative of such coatings with a high coefficient of friction (0.40.6 friction between the workpiece and the workpiece from time to time will occur a lot of heat energy. To prevent the tool from overheating deformation deformation affects the processing accuracy to extend its service life, usually using cutting fluid .

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