TOOL FOR CUTTING OR PLASTIC WORKING OF METALS

摘要

FIELD: tool materials, namely tools for plastic working or cutting metals with strengthening coatings. ^ SUBSTANCE: tool includes hard alloy steel base with strengthening coating. Copper-nickel diffusion layer is used as strengthening coating; said layer is formed by diffusion saturation in melt of eutectic lead-lithium alloy to which copper and nickel are added. In variants of invention diffusion layer is formed in melt of eutectic lead-lithium alloy containing 5 - 10 mass % of copper and 2 - 3 mass % of nickel at temperature of diffusion saturation 1000 - 1200°C. ^ EFFECT: enhanced strength of tool, improved efficiency of process for plastic working or cutting metals. ^ 2 cl, 2 ex