Aluminum casting AC motor accessories is a kind of common aluminum shell. Henan Chalco adopts internal high pressure forming technology and precision die casting technology to produce. Internal high pressure molding technology, excellent performance, large design freedom, high dimensional accuracy and mechanical properties, reduce weight, save materials. Precision injection technology, high strength after forming, and can achieve a complex shape of a molding. It can be used to mass produce all kinds of parts without cutting or with little cutting, and reduce the number of parts