矽铬钢是一种耐热钢,所含的合金成分比较高:铬8～10％,矽2～3％,而铬和矽都有提高热处理温度的特性。在设备完善的条件下,它并不是很难热处理的,但在普通的设备中来处理矽铬钢是有一些困难的。现在把我们制造A3-51和M-20排气门时,摸索到的—些热处理经验向 Silicon-chrome steel is a heat-resistant steel with a high alloy composition: 8 to 10% chromium and 2 to 3% silicon, while both chromium and silicon have the property of increasing the heat treatment temperature. It is not very heat-treated in a well-equipped environment, but it is somewhat difficult to treat it in common equipment. Now when we make A3-51 and M-20 exhaust valve, groping - some heat treatment experience to