The formation method of spinning a sphere

Spinning method for forming stainless steel spheres: Metal spinning method is an advanced and chip free processing method, belonging to a new branch of pressure processing. It combines the characteristics of forging, extrusion, rolling, and rolling processes, has a high material utilization rate (up to 80-90%), saves a lot of processing time (1-5 minutes of forming), and can double the material strength after spinning. Due to the small area of contact between the spinning wheel and the workpiece during spinning, the metal material is subjected to two or three directions of compressive stress, making it easy to deform. Under low power, it can obtain a higher unit contact stress (up to 25-35Mpa). Therefore, the equipment is lightweight and requires less total power (less than 1/5-1/4 of the press). It has been recognized by the foreign valve industry as an energy-saving ball processing process plan, It is also suitable for processing other hollow rotating parts. Spinning technology has been widely applied and rapidly developed abroad, with mature and stable processes and equipment, and achieving automatic control of mechanical, electrical, and hydraulic integration. At present, spinning technology has also been greatly developed in China and has entered a stage of promotion and practicality.