The invention provides a vacuum
welding furnace and a
welding technology, and belongs to the technical field of vacuum
welding. The vacuum welding furnace is characterized in that one end, close to the feeding end, of a welding platform (20) is used as a heating area; one side, close to the discharging end, of the welding platform (20) is used as a cooling area; a negative pressure pumping module(9) is arranged at the upper side of one end, close to the cooling area, of the heating area, and the negative pressure pumping module (9) is mounted on a furnace cover (4) by lifting; the bottom partof the negative pressure pumping module (9) and the heating area encircles a closed negative pressure chamber; a protecting gas inlet
pipe is arranged on a welding chamber (18) or the furnace cover (4). According to the vacuum welding furnace, material sheets can be heated through the heating area, so that the material sheets can be quickly welded in the negative pressure chamber; protecting gasis charged, so that the material sheets are prevented from reacting with
oxygen during being heated; the material sheets can be cooled and prevented from being oxidized through the cooling area. According to the welding technology, the welding time is decreased; the welding is accelerated; with the adoption of the cooling area, the material sheet can be completely cooled and is prevented from deformation caused by excessively quick cooling.