It is applied for the tempering heat treatment in various temp .To different workpieces of alloy steel , or stainless steel in the vacuum circumstance , filling inert gas or weak reducing atmosphere.

• 适用于各种合金钢、不锈钢等零件的真空、充填惰性气体或弱还原性气体气氛下的各种温度回火热处理工艺。