Thermal Treatment of Cemented Alloyed Steels for the Cold Plastic Deformation

Abstract

Disclosed is a method of thermal treatment of blanks from alloyed cement steels for cold volumetric stamping and extrusion. The technology ensures the formation of a ferritic-pearlitic structure in steel with a minimum microhardness of individual structural components. Examples of manufacturing of toothed parts by the method of cold wrapping and thin-walled tubular articles during cold extrusion are given. It is shown that cyclic resistance of parts made by cold plastic deformation and hardened by method of chemical-thermal treatment is increased by three or more times. According to the results of metallographic analysis, the ability of steel to cold plastic deformation and the ability to obtain high-quality machine parts are predicted.