本文详细地提供了大截面的高速钢在高压氮气中淬火的金属组织转变特性及其与常规盐浴热处理效果的比较,对真空热处理的优点也作了介绍。 This paper provides a detailed comparison of the transformation characteristics of the metal quenched by high-pressure nitrogen in a high-speed steel with a large section and its heat treatment effect with that of a conventional salt bath. The advantages of the vacuum heat treatment are also introduced.