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阐述了硅在高速钢中的影响规律和作用及使用原则，硅影响二次硬化的△Ｗ判据，分析比较了硅、钴和铝在高速钢中的不同作用，介绍了两种新型的含硅高速钢。
The influence of silicon in high-speed steel and the principle of its application are described. The △ W criteria for the influence of silicon on secondary hardening are analyzed. The different roles of silicon, cobalt and aluminum in high-speed steel are analyzed and compared. Two new types of High-speed silicon steel.