Compressor impeller is a type of representative parts with sculptured surface, which is the most important part in the centrifugal compressor. Its design and manufacture precision have large effect on the performance of compressor. With the development of science and technology, the rotational speed, design and manufacture precision of impeller used in the fields of aeronautics & astronautics, shipbuilding and locomotive are increasing. At the present, major compressor impeller is designed and manufactured ...