Efficient welding device for automobile swing arm and welding technology of efficient welding device

The invention discloses an efficient welding device for an automobile swing arm and a welding process of the efficient welding device. A supporting plate is installed on the rack, a first fan is installed below the supporting plate, the output end of the first fan is connected with a filter box through a second pipeline, the filter box is installed on the rack, and a heat preservation layer is arranged in the filter box; and a second fan is installed below the supporting plate, the output end of the second fan is connected with an air storage bag through a fourth pipeline, the air storage bag is arranged in the welding table, and a contact plate is installed on the surface of the welding table. According to the efficient welding device for the automobile swing arm and the welding technology of the efficient welding device, hot air welded on the welding table is conveyed into the filter box through the air suction cover, the hot air is output into the welding table, the temperature of a contact plate in the we