After more than ten years of use of the high-pressure reciprocating compressor, cracks appeared at the short joints between the inlet and outlet of the compression cylinder, and the deepest part of the crack reached 3mm, which seriously affected the safety production. WILA used laser cladding technology to carry out the cracked compression cylinder The maintenance and repair cycle is short, the price is cheap, and it can fully meet the requirements of high-efficiency gas injection of the gas injection compressor.