Efficient and environmentally-friendly compressor shell annular gap resistance projection welding technology

The invention relates to a resistance projection welding technology, in particular to an efficient and environmentally-friendly compressor shell annular gap resistance projection welding technology which comprises the following working procedures: the positioning procedure: enabling a compressor shell A and a compressor shell B to be in tight contact and positioning; and the annular gap resistanceprojection welding procedure: adopting a capacitive energy storage resistance projection welding machine electrode to carry out annular gap welding on the contact part of the compressor shell A and the compressor shell B. According to the efficient and environmentally-friendly compressor shell annular gap resistance projection welding technology, the shapes of the compressor shell A and the compressor shell B are specially designed, and the output end of the capacitive energy storage resistance projection welding machine outputs large current within an extremely short period of time, so thatthe entire ring between th