A method of manufacturing a subframe for integrally molding a welding pin of a hermetic scroll compressor

摘要

The present invention relates to a method of manufacturing a metal mold, comprising the steps of: placing welding fins in a metal mold on which a subframe is formed; a second step of injecting molten aluminum as a subframe material into a mold through a gate; And the third step of extracting the integral type sub-frame formed integrally, the welding pin is firmly adhered to the sub-frame and the work is easily performed, so that the productivity can be improved.