What are the characteristics of the ring blank forging forging process?

The forging process of ring forgings mainly consists of the following processes: pier thickening, drawing, punching, and hole expansion. The difference between free forging and ring rolling processes mainly lies in the hole expansion process. In the production of ring forgings, free forging is usually used to expand the holes, while rolling rings are mainly used to expand the holes.

Ring rolling is a continuous partial forming process, which is the intersection and combination of rolling and mechanical manufacturing. Compared with traditional free forging processes, die forging processes, etc., it has economical characteristics. Horse-bar reaming is mainly used to expand the ring forgings during free forging. The stress and strain situation of horsebar reaming is similar to elongation, but is different from the elongation of the long axis. It is the elongation of the annular forging blank along the circumferential direction, which is local loading and overall stress.

The ring rolling process of ring forgings uses a ring rolling machine (also known as a ring rolling machine, a ring rolling machine, a hole expansion machine) to cause continuous local plastic deformation of the ring, thereby achieving plastic processing of wall thickness reduction, diameter expansion, and cross-sectional profile shaping. Craftsmanship. The stress, strain and deformation flow conditions during rolling hole expansion are the same as those for mandrel hole expansion. Its characteristics are: the tool rotates and the deformation is continuous, that is, the rolling of the ring blank. When rolling and expanding holes, the reduction is generally small, so it has the characteristics of surface deformation.