Abstract
In this study it is proposed to increase the mechanical properties of HSS 1.3343 tool steel by electro-spark alloying with a hard carbide alloy. As a result, the hardness of coatings obtained by electro-spark alloying reached at least 18–22 GPa, the substrate hardness reached 3.7 GPa. After induction quenching in the air, the hardness of the coating equaled 12.0±0.1 GPa. The hardness of the steel substrate increased to 9.1±0.6 GPa. The subsequent sizing (finish grinding) ensured a reduction in roughness Ra to 0.16–0.32 and in open porosity. After grinding, the hardness of the coating and the substrate was 10.3±0.5 GPa and 8.0±0.6 GPa, respectively. The proposed solution can improve the functional qualities of various frictional surfaces used in tool-making facilities.
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