Multi-Coated Tungsten Carbide Cutting Tools Application

Multi-coated tungsten carbide cutting tools coating composition variety of ways to meet the processing conditions vary, the processing should be processed according to the material properties and processing characteristics of the design coating composition, coating thickness. Commonly used multi-coated tungsten carbide cutting tools can be divided into four series: TiC / TiN, TiC / TiCN / TiN, TiC / Al2O3 and TiC / Al2O3 / TiN. The first two categories apply to ordinary semi-fine and fine plus workers, the latter two for high-speed and heavy-duty cutting.

Multi-coated tungsten carbide cutting tools combines the advantages of a single coating. For example, TiC-Al2O3 -TiN three blade coating on a substrate coated TiC coating ensures firm adhesion of the coating and the substrate, and a blade in the middle and a high resistance to mechanical wear properties at low speed cutting conditions; Al2O3 coatings applied thereon, be obtained at high temperatures have good chemical stability and insulation properties, so that the blade substrate temperature is too high and will not be plastically deformed, and therefore have high durability in high-speed cutting; On Al2O3 coating and then coated with TiN, the tool will enable the friction coefficient is small, smooth chip discharge, can reduce the cutting temperature and prevent sticking knife phenomenon, reduce tool crater wear, but also to reduce BUE generation. In actual production should be used reasonably and processing characteristics of the coating according to the nature of the material being processed.




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