A 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 .................................................................. 1 1、工艺原理 ............................................................................................................................ 1 2、真空热处理的加热特点： ................................................................................................ 3 二、真空热处理工艺参数的确定 .................................................................................................. 3 1、真空度： ............................................................................................................................ 3 2、加热和预热温度： ............................................................................................................ 4 3、真空淬火加热时间 ............................................................................................................ 4 三、真空热处理的冷却方法 .......................................................................................................... 5 1、气淬 .................................................................................................................................... 5 2、真空油淬 ............................................................................................................................ 7 3、为减小工件变形采用的分级冷却。 ................................................................................ 9 4、真空水淬。 ........................................................................................................................ 9 5、真空硝盐淬火。 ................................................................................................................ 9 6、炉冷或控速冷却。 ......................................
