Brazing in a vacuum furnace is a brazing process in which a brazed workpiece is placed in a vacuum furnace, and the workpiece is in a vacuum state during brazing to avoid oxidation of the base metal, and under high temperature vacuum conditions, The surface oxides of the base material is volatilized at high temperatures, and are eliminated by the vacuum equipment system, and the residual brazing filler metal during brazing is also volatilized by vacuum equipment. Brazing in a vacuum furnace, there is no need to add the brazing flux. Vacuum equipment is composed of mechanical vacuum pump, diffusion pump, vacuum connecting pipe and vacuum butterfly valve and so on. It can improve the vacuum degree of the system and can have a positive effect on the brazing quality. Generally, the vacuum degree of brazing in vacuum furnace is within 1.33 * 10-1- 1.33 * 10-3Pa.

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  Vacuum Brazing Furnace