Spinning technology, also called metal spinning forming technology, is formed by rotating the force point from point to line from line to surface, while giving a certain pressure in a certain direction to deform and flow the metal material along this direction. Technology of a certain shape. Here, metal materials must have plastic deformation or flow properties. Spinning is not equivalent to plastic deformation. It is a complex process that combines plastic deformation and flow deformation. It is particularly important to point out that the spinning forming technology we are talking about is not a single strong force. Spinning and ordinary spinning, it is a combination of the two; powerful spinning is used for the processing technology of spinning forming shells of various barrels and cones. It is an older and mature method and technology. It is called the rolling method.