Structure of vacuum gas quenching furnace
Vacuum gas quenching furnace is generally composed of furnace, electric heating device, sealed furnace shell, vacuum system, power supply system and temperature control system. The sealing furnace shell is welded with carbon steel or stainless steel, and the joint surface of detachable parts is sealed with vacuum sealing material. In order to prevent the shell from deforming and the sealing material from deteriorating after heating, the shell is usually cooled by water or air cooling. The furnace is located in the sealed furnace shell. According to the purpose of the furnace, different types of heating elements are installed in the furnace, such as resistance, induction coil, electrode, electron gun, etc. The furnace of the vacuum furnace for smelting metal is equipped with crucible, some with automatic pouring device and manipulator for loading and unloading. The vacuum system is mainly composed of vacuum pump, vacuum valve and vacuum gauge.