In short, conventional spinning emphasizes concave shapes, while strong spinning emphasizes thinning and lengthening. Ordinary spinning is a spinning forming process that mainly changes the shape of the billet, with the wall thickness basically unchanged or less changed. Ordinary spinning mainly shapes workpieces by changing the diameter size of the sheet metal. It is a non cutting forming process for processing thin-walled rotating bodies, which is formed by spinning the rotating metal circular plate or preform through feed motion of the spinning wheel. Power spinning (also known as thinning spinning) originates from ordinary spinning, in which not only changes the shape of the blank but also significantly reduces its wall thickness during the spinning process. The difference between thinning spinning and ordinary spinning is that thinning spinning belongs to the category of volume deformation. During the deformation process, the main thing is to reduce the wall thickness while keeping the volume of the billet basically unchanged. The shape of the finished product is completely determined by the size of the core mold, and the accuracy of the finished product size depends on the reasonable matching of process parameters. When using strong spinning for cylindrical parts, only the outer diameter is reduced without changing the inner diameter (the opposite is true for internal spinning). Due to the reduction of the wall thickness of the blank by strong spinning, a large amount of deformation is allowed in one spinning, which greatly improves the production efficiency of strong spinning compared to ordinary spinning. Its applicability is also greatly expanded, but the corresponding strong spinning requires a larger equipment power.