论文部分内容阅读
概述了铸造高速钢的生产工艺、发展过程以及铸造刀具的性能和应用情况。铸造高速钢存在的主要问题是组织中粗大的晶界网状并晶碳化物使铸造高速钢晶界脆化严重，韧性降低；改善的途径有孕育处理、变质及合金化、共晶碳化物的高温顶球化及电渣重熔等。
The production process, development process and casting tool performance and application of casting high speed steel are summarized. Casting high-speed steel there is the main problem is the organization of coarse grain boundary network and crystalline carbide casting high-speed steel grain boundary embrittlement serious, toughness to reduce; improve the way pregnant, metamorphism and alloying, eutectic carbide High temperature top ball and ESR and so on.