vacuum welding furnace, comprising a welding chamber (18),an oven cover (4) and a transport unit (2),where the furnace cover (4) covers the top of the welding chamber (18) sealing to form a welding chamber between the welding chamber (18) and the furnace cover (4), and where a welding table (20) is provided at the bottom of the welding chamber (18), characterized by a side facing the loading end of the Welding table (20) is a hot zone and one side of the welding table facing the end of the hot zone (20) is a cooling zone, with a suction module (9) mounted on the top of one end of the cooling zone facing the end of the hot zone, which can be raised and lowered to the furnace cover (4),where the bottom part of the suction module (9) together with the heating zone includes a tightly closed pressure chamber and where a protective gas inlet pipe at the welding chamber (18) or the furnace cover (4) is provided.
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