Understand various forming processes of metal materials (VII): Metal semi-solid forming
7、 Semi solid metal forming Semi solid forming: the unique rheological and stirring properties of non dendritic semi-solid metals (SSM) are used to control the quality of castings. Semi solid forming can be divided into rheological forming and thixotropic forming. (1) Rheoforming (2) Thixoforming Technical features: 1. Reduce liquid forming defects and significantly improve quality and reliability; 2. The forming temperature is lower than the full liquid forming temperature, which greatly reduces the thermal shock to the mold; 3. It can produce alloys that cannot be produced by conventional liquid forming methods; Application: at present, it has been successfully used…