真空热处理工艺屠恒悦目录前言..................................................................................................................................................1一、真空热处理工艺原理和真空热处理和加热特点...................................................................11、工艺原理............................................................................................................................12、真空热处理的加热特点：.................................................................................................3二、真空热处理工艺参数的确定...................................................................................................31、真空度：............................................................................................................................32、加热和预热温度：.............................................................................................................43、真空淬火加热时间.............................................................................................................4三、真空热处理的冷却方法...........................................................................................................51、气淬....................................................................................................................................52、真空油淬............................................................................................................................73、为减小工件变形采用的分级冷却。.................................................................................94、真空水淬。........................................................................................................................95、真空硝盐淬火。.................................................................................................................96、炉冷或控速冷却。.............................................................................................................9四、真空退火、真空淬火、真空回火及常用金属材料的真空淬火、回火工艺规范...............91、真空退火目的.....................................................................................................................92、真空淬火：......................................................................................................................143、真空回火..........................................................................................................................19四、常用金属材料的真空淬火、回火工艺规范。.....................................................................20（1）合金结构钢和超高强度钢...........................................................................................20（2）弹簧钢..........................................................................................................................22（3）轴承钢..........................................................................................................................22（4）合金工具钢...................................................................................................................22（5）高速钢..........................................................................................................................23（6）不锈耐热钢............................................................................
