概述了国外粉末冶金工模具钢的种类及特性。
The sorts and properties of powder metallurgy tool and die steels abroad were summarized.
首先介绍工具钢的种类及其工作条件和性能要求。
The paper presents the type and working conditions and performance requirements of tool steel.
介绍了高性能熔炼高速钢的种类与性能。列出了某些切削试验数据。
The kinds and properties of super-hard smelting high speed steels are introduced. Soime data of machining tests are listed.
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