METHODS FOR FORMING MULTI-LAYER WEAR-RESISTANT COATINGS ON THE CUTTING SURFACE OF A METAL WORKING TOOL
Improving the performance of metal-cutting tools, i.e. their wear resistance in a wide range of technological cutting modes, when processing various hard-to-process steels and alloys is an urgent task of modern machine-building production. The efficiency of blade processing at the present stage of development of mechanical engineering depends to a large extent on the performance of the cutting tool, which is primarily determined by the combination of physical and mechanical properties of the tool material-hardness, strength wear resistance, etc. however, obtaining the optimal combination of these properties in the volume of the cutting tool material presents significant difficulties. When solving the complex task of improving the quality and reliability of the cutting tool, it is of great importance to widely use various types of coatings on its cutting surface, which allow saving scarce materials and prolonging its service life, significantlyincreasing the performance of the tool. Improving the performance of tools is one of the main ways to improve the resource reliability of their operation. The main and most important performance indicators of tools are largely determined by the quality of their surface layers. Therefore, the formation of a high-quality surface layer on the surface of the cutting part of the tool and increasing wear resistance is the most effective means of improving its performance. This article discusses the main methods for improving the wear resistance of carbide cutting tools currently used, their evaluation and efficiency of use. The method of ionvacuum modification is proposed as the main method for improving the efficiency of the cutting tool.