真空炉的真空度要根据材料和加热温度来选择,首先要满足无氧化加热所需的工作真空度,再综合考虑表面光亮度,除气和合金元素蒸发等因素,常用材料真空处理推荐工作真空度如下:
真空热处理 Vacuum heat treatment | 推荐工作真空度Recommended working vacuum | 真空钎焊 Vacuum brazing | 推荐工作真空度 Recommended working vacuum |
钢(合金工具钢、结构钢、轴承钢) Steel (alloy tool steel, structural steel, bearing steel) | 1-10-1Pa | 铝制产品 Aluminum products | 10-3Pa |
含Cr、Ni、Si等合金钢 Alloy steel containing Cr, Ni, Si, etc | 10Pa | 铜基产品 Copper base products | 10-1-10-2Pa |
不锈钢,高温合金,铁基、镍基、钴基 Stainless steel, high-temperature alloy, iron, nickel, cobalt base | 10-2-10-3Pa | 镍基产品Nickel-based products | 10-2-10-3Pa |
钛合金 Titanium alloy | 10-3Pa | 多元合金产品Multicomponent alloy product | 10-1-10-3Pa |
铜合金 Copper alloy | 133-13.3Pa | 高速钢回火 High speed steel Tempering | 1.3-10-2 |