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OCr17Ni4Cu4Nb(相当美国17—4PH)马氏体沉淀硬化型不锈钢兼具优良的耐蚀性能和机械性能;易成型铸造、易热压加工、热处理工艺简单、可焊接、可切削、国外应用广泛而国内尚少。本文概介我厂从70年代中期开始研究应用以来关于化学成份、金相热处理组织耐蚀性能、力学性能以及精密铸造和热处理工艺的主要经验、特点和体会。
OCr17Ni4Cu4Nb (equivalent to the United States 17-4PH) martensitic precipitation hardened stainless steel with excellent corrosion resistance and mechanical properties; easy molding, easy hot pressing process, heat treatment process is simple, welding, cutting, a wide range of foreign applications and domestic Still less. This article summarizes the main experiences, characteristics and experiences of our factory since the mid 1970s on the application of chemical composition, metallographic heat treatment of tissue corrosion resistance, mechanical properties and precision casting and heat treatment process.