Abstract
Nowadays, in theoretical works and practice of mechanical engineering the issues related to technological strengthening of tool surface layers and change of their properties in the right direction are being developed. The proposed work is devoted to the study of the issues related to the improvement of operating properties of tools made of fast-cutting steels by magnetic pulse processing, which is a combination of electromagnetic and thermodynamic methods to control the unbalanced structure of the substance. Existing methods of magnetic processing are analyzed, on the one hand, as methods to increase tool resistance by overlaying the magnetic field on the processing area and on the other hand, the influence of the magnetic field on the material from which the tool is made. It is shown that methods related to processing of the tool material itself in constant, alternating and pulsed magnetic fields most stably increase tool stability and quality. With increasing intensity of magnetic field, in which the tool was processed, the value of hardness and heat resistance of steel P6M5K5 increased. Tool holding time during magnetic processing is an important element of the magnetic processing mode. Thus, for P6M5 steel the time of magnetic field exposure during 60 seconds is enough to achieve the greatest increase in the hardness of the material. It is noted that the increase in tool resistance is not due to the disadvantages of heat treatment, but due to improved properties of the tool material, and primarily such operational properties as hardness and heat resistance.
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