Application1. Mainly used for vacuum oil quenching die steel, carbon tool steel, alloy steel structure, bearing steel, hard alloy and other work pieces. 2.Used for vacuum quenching high speed, high alloy die steel, martenstic stainless steel and high temperature alloy. 3.For vacuum brazing stainless steel, copper and high temperature alloy. Characteristic 1.Multifunctional vacuum heating treatment equipment. 2.Oil circling system adopts double motors circling system. 3.Valve board moves upward, downward and horizon, make vacuum sealed safe and reliable.