Vacuum furnace shell is generally cooled by water or gas cooling
Jan 11, 2024| Vacuum furnace shell is generally cooled by water or gas cooling
The pressure inside the vacuum furnace can be reduced to below atmospheric pressure in an industrial furnace. Vacuum furnace uses electric heating, and the surface of the heated workpiece does not oxidize, decarburize, deform less, and has good mechanical properties. Melting metal in a vacuum furnace is beneficial for removing impurities. The finished product has fewer pinholes, less segregation, and good quality. Vacuum furnace is suitable for the melting and heating of high-quality, high-purity, and refractory metals. For example, it is used for the smelting of tungsten, molybdenum, tantalum, niobium, titanium, heat-resistant alloy steel, magnetic materials, electrical materials, high-strength steel, stainless steel, tool steel, mold steel, etc.
A vacuum furnace generally consists of a furnace, an electric heating device, a sealed furnace shell, a vacuum system, a power supply system, and a temperature control system. The sealed furnace shell is welded with carbon steel or stainless steel. The joint surface of detachable components is sealed with vacuum sealing material. To prevent deformation of the furnace shell and deterioration of the sealing material after heating, the furnace shell is generally cooled by water or air cooling. The furnace is located inside the sealed furnace shell. According to the purpose of the furnace, different types of heating elements are installed inside the furnace, such as resistors, induction coils, electrodes, and electron guns. The vacuum furnace for melting metals is equipped with crucibles in the furnace, and some are also equipped with automatic pouring devices and mechanical arms for loading and unloading materials. The vacuum system mainly consists of a vacuum pump, vacuum valve, and vacuum gauge.
