Introduction to the application of surface technology on cutting tools

If you need to achieve high-efficiency and high-speed machining, cutting tools are another important factor. The current development of cutting tool materials has created better conditions for processing needs. In addition to high-speed steel and cemented carbide, the development of ceramics, cermets, and superhard materials has played an important role. Especially ceramics and superhard materials provide strong support for the development of high-efficiency and high-speed machining. On this basis, PCD and PCBN soon appeared, creating conditions for cutting, dry cutting, hard cutting, and ultra-precision cutting of difficult-to-machine materials.

Another aspect of cutting processing is the application of surface technology to cutting tools. PVD (Physical Vapor Deposition) and CVD (Chemical Vapor Deposition) are constantly innovating and developing from a single layer to a multi-layer, thousand-layer, and composite coating. The layer has now developed into a nano-coating; the material of the coating has evolved from TiN to A12O3, TiC, ZrO2, and so on. In order to reduce friction, a soft coating is used. Of course, this should be applied to the required processing separately according to the characteristics of the workpiece. Now the coating technology has developed into super hard coating (diamond-like carbon, diamond, cubic boron nitride), which has broadened the scope of cutting. It is particularly worth mentioning that the thin film coating has developed into a thick film, which is different from natural diamond and has isotropic properties. It has now been used at home and abroad, partially replacing natural diamond. (Guide: How to extend the process life of cold heading molds)

In order to adapt to high-efficiency and high-speed machining, auxiliary tools are also very important means. For example, in the application of the original modular fixture to the machining center, in order to improve its strength, it has been developed from a slot system to a hole system. Now, the synthesis technology of large-particle single crystal diamond has been solved. These changes have a profound impact on my country. my country is already the country with the largest synthetic diamond production in the world, which is conducive to the development of high-efficiency processing technology in my country.

Currently, the most typical application is the application of EROWA and 3R combination tools, which have developed from electrical machining to machining centers, which not only speeds up the rhythm, but more importantly, achieves high precision. These tools are electro-processed from the original mold Developed into the field of cutting processing. The shank required for shank cutting tools has also developed a new structure in the process of high-efficiency and high-precision cutting. The advancement of tools provides strong support for efficient processing.

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