... a high pressure (pressure 0.6-1.0MPa) gas cooling function,it is used for vacuum gas-quenching, annealing, brazing of high- Models ... : WZDGQ-20, WZDGQ-30, WZDGQ-45, and WZDGQ-60.With a high pressure (pressure 0.6-1 ... steels, and stainless steel parts, and for sintering, rapid cooling of magnetic materials. WZGQ Series vacuum high pressure air quenching furnace