vacuum equipment

Heat treatment vacuum furnace is a comprehensive technology combining the two specialties of vacuum technology and heat treatment, which means that all and part of the heat treatment process are carried out under the vacuum state. China divides vacuum into low, medium, high and ultra high vacuum. At present, the working vacuum degree of most heat treatment vacuum furnaces is ~1.33 10 ³. Pa. The vacuum furnace for heat treatment can realize almost all heat treatment processes, such as quenching, annealing, tempering, carburizing and nitriding, and can realize gas quenching, oil quenching, nitrate quenching and water quenching in the quenching process, as well as vacuum brazing, sintering and surface treatment. Heat treatment vacuum furnace high thermal efficiency, can achieve rapid temperature rise and drop, can achieve no oxidation, no decarburization, no carburization, can remove the workpiece surface phosphorus chips, and have degreasing degassing, so as to achieve the effect of ...

The pressure in the chamber of a vacuum furnace can be pumped into an industrial furnace below atmospheric pressure. Vacuum furnace is electrically heated, the surface of the workpiece heated is not oxidized, decarbonized, small deformation and good mechanical properties. It is advantageous to remove impurities by smelting metal in vacuum furnace. The finished product has fewer pinholes, smaller segregation and good quality. Vacuum furnaces are suitable for the smelting and heating of high quality, high purity and refractory metals, such as tungsten, molybdenum, tantalum, niobium, titanium, heat resistant alloy steels and magnetic materials, electrical materials, high strength steels, stainless steel, tool steels, die steels, etc. Vacuum furnaces appeared around the 1930s. In 1927, the vacuum annealing furnace for electrical materials was made in the United States. In 1953, vacuum consumable arc furnace was used to smelt titanium sponge in industry. Vacuum induction furnaces have be...