FORMING GEOMETRY EDGE OF A CUTTING TOOL BY LASER ABLATION METHOD AND INFLUENCE OF LASER TREATMENT ON THE RESISTANCE OF PLATES FROM P6M5

Abstract

Increasing the resistance of the cutting tool is a significant engineering problem, which is caused by the widespread use of new structural materials with special physical and mechanical properties and is associated with the development of new hardening technologies. High-performance processing, as well as high demands on the surface quality of the workpiece, are the reason for the development of modern cutting tools. The necessary properties of the cutting tool are achieved through the use of various materials for the cutting tool, coating technology, changes in the macro geometry and the cutting edge of the tool, finishing processing of the cutting edge, etc. As a rule, all modern tool materials are subject to increased demands on the wear resistance of their surface. Moreover, it has already become generally accepted to create a layer on the surface of the instrument, which differs in structure or chemical composition from its core. Almost all characteristics that affect the performance of a cutting tool: hardness, heat resistance, wear resistance, etc. are determined by the properties of its surface layers. Such technologies, first of all, include both physicochemical methods of modifying the structure of instrumental materials, including the process of hardening laser processing, and ion plasma technologies for applying wear-resistant coatings. Among the most effective physicochemical methods for modifying the surface properties of materials is the process of hardening laser treatment. Increasing the durability of a metal-cutting tool made of high-speed steel is possible using laser processing.