真空爐的真空度要根據材料和加熱溫度來選擇,首先要滿足無氧化加熱所需的工作真空度,再綜合考慮表面光亮度,除氣和合金元素蒸發等因素,常用材料真空處理推薦工作真空度如下:
真空熱處理 Vacuum heat treatment | 推薦工作真空度Recommended working vacuum | 真空釬焊 Vacuum brazing | 推薦工作真空度 Recommended working vacuum |
鋼(合金工具鋼、結構鋼、軸承鋼) Steel (alloy tool steel, structural steel, bearing steel) | 1-10-1Pa | 鋁制產品 Aluminum products | 10-3Pa |
含Cr、Ni、Si等合金鋼 Alloy steel containing Cr, Ni, Si, etc | 10Pa | 銅基產品 Copper base products | 10-1-10-2Pa |
不銹鋼,高溫合金,鐵基、鎳基、鈷基 Stainless steel, high-temperature alloy, iron, nickel, cobalt base | 10-2-10-3Pa | 鎳基產品Nickel-based products | 10-2-10-3Pa |
鈦合金 Titanium alloy | 10-3Pa | 多元合金產品Multicomponent alloy product | 10-1-10-3Pa |
銅合金 Copper alloy | 133-13.3Pa | 高速鋼回火 High speed steel Tempering | 1.3-10-2 |