METHOD OF MAKING WELDED IMPELLER OF CENTRIFUGAL COMPRESSOR Russian patent published in 2002 - IPC

FIELD: mechanical engineering; compressors. SUBSTANCE: proposed method can be used for manufacturing welded impellers, including large-size ones, designed for operation under heavy loads. First main and cover disks are made and blade blanks. Then blades are welded to cover disk over entire perimeter of inner surface of cover disk in place of mating of blade end face surfaces with cover disk surface. Then cover disk with welded-to blades is welded to main disk. EFFECT: provision of high mechanical strength, reliability and increased service life of centrifugal compressor owing to faultless welds of equal strength. 3 dwg