Abstract
The formation of hardened layers on die steel with hot working using gas cyclic nitriding methods has been viewed, the morphology of the hardened layer has been studied. Life loss problem of hot working dies due to the formation of cracks has been specified. Service life-extension of hot working stamps is provided by the formation of a powder metal-ceramic layer based on carbonitrides of alloying elements. The hardened layers on 4X4M2VFS steel after cyclic gas nitriding, the change in microhardness along the coating thickness, as well as the integral dimensional characteristics of dispersed nanopowder particles have been examined.
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