PROCESS FOR MANUFACTURING STEEL ARTICLES HAVING HIGH CONTACT STRENGTH, HIGH TENSILE STRENGTH AND EXCELLENT CORROSION RESISTANCE

摘要

PURPOSE: A method of manufacturing steel parts with high surface durability, high strength and high corrosion resistance is provided to ensure simple and economic manufacturing processes since a separate post-process is not needed after heat treatment. CONSTITUTION: A method of manufacturing steel parts with high surface durability, high strength and high corrosion resistance comprises next steps. Austenite nitrocarburizing heat treatment is performed on steel parts, diffusion layers of nitrogen and carbon are formed on the surfaces of the steel parts and are quickly cooled. Nitriding or nitrocarburising heat treatment is performed on the steel parts and forms a diffusion layer of nitrogen and a layer of compound, which consists of single ε -phase or a combination of ε -phase and γ ' -phase.