Specifics of Application of Cutting Ceramics with Functional Coating in Turning of High-Strength Materials

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This paper reviews some of the features of application of cutting ceramics with Ti-TiN-(TiAlZr)N coating for machining of high-strength hardened alloy steel. The study has revealed the conceptual role of coatings on ceramic cutting tools, which can serve as a scientific and technological basis for further improvement of the ceramic tool. It has been found out that the coating increases the antifriction properties of ceramics both due to lower coefficient of friction of the coating material and to reduction of roughness of rake face of the tool, and that is the main cause of 25% reduction in cutting force components for the coated tool, wherein the difference in cutting forces for the coated and uncoated tools is inversely proportional to the thickness of the slice. On the basis of the analysis of the studies on the issues of cutting with coated tools of ceramic material and the results of research presented in this paper, the conceptual role of the coating on the working surfaces of the ceramic tool was formulated, and it can serve as a scientific and technological basis for further improvement of the ceramic tool.

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221-227

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May 2016

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