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Vacuum heat treatment is a new type of heat treatment technology that combines vacuum technology and heat treatment technology. The vacuum environment in which vacuum heat treatment is carried out refers to an atmosphere environment below one atmosphere, including low vacuum, medium vacuum, high vacuum, and ultra-high vacuum. Vacuum heat treatment actually belongs to atmosphere controlled heat treatment. Vacuum heat treatment refers to all or part of the heat treatment process being carried out in a vacuum state, greatly improving the quality of the heat treatment. Compared with conventional heat treatment, vacuum heat treatment can achieve non oxidation, non decarburization, and non carburizing, remove phosphorus chips from the surface of the workpiece, and have functions such as degreasing and degassing, thus achieving the effect of surface brightness purification.
