Precision cold rolling technology is a kind of cold forming method, which is used to extrude the ring-shaped rotary parts to obtain the finished products at normal temperature. The precision cold rolling can make the size and shape of the workpiece approach to the theoretical value of the finished product. The advantages are: 1. Can significantly improve the material utilization and processing efficiency. Compared with the traditional turning method, the precision cold rolling can increase the material saving rate by 10% ~ 15% , so that the bearing rings can be machined and the machining cost can be reduced. 2. Can Improve the quality of the finished product. Because of the rolling method, the metal streamline inside the part is continuous and complete, the metal grain is more uniform and small, the structure is more compact, so the strength of the part can be improved. At the same time, because of the residual surface stress of the finished product, the deformation of the parts after heat treatment is smaller. 3. Can Save Energy, improve the working environment. Compared with the forging die, the precision rolling equipment tonnage required is smaller, can significantly reduce the processing noise, energy-saving effect is obvious. Compared with the billet made by turning, the noise and dust are smaller. When the workpiece is rolled, the roller drives the workpiece to rotate, and the core roller squeezes the workpiece under the push of the supporting wheel fixedly connected with the feed device, thus the workpiece is rolled.

Post time: Dec-29-2021