Development overview of rolling ring forging industry

Rolling ring forgings refer to forgings that use a hydraulic press to upset and punch the forging blank, and then roll it into a ring with an upper ring rolling machine, and then heat treat and finish the forgings as required. The key link is ring rolling, also known as hole reaming, which is one of the unique forming methods of ring parts. The schematic diagram of the ring rolling machine is as follows. During ring rolling, the motor drives the rolling wheel to rotate through the reduction box. The rolling wheel pulls the blank into the blank through the friction between it and the ring blank and spins continuously. The gap between the ring blank and the core roller The frictional force drives the core roll to rotate, and at the same time, the center distance between the rolling wheel and the core roll gradually decreases until the deformation ends.

Compared with other forging processes, ring rolling forging has many advantages, such as small machining allowance and high material utilization rate; the internal quality of processed ring parts is excellent; the forging environment is good, vibration and noise are greatly reduced; and the processing cost is low.

The rolling ring forging blank has strong plasticity, and it can be processed into flanges, gears, slewing bearing rings and other ring forging products through finishing equipment such as CNC machine tools, and its application range is wide. For example, the connecting flanges used in wind power towers, due to their large diameter and heavy load, the flanges produced by splicing technology in the past could not meet the requirements, and now they are generally produced by ring rolling technology; construction machinery, port machinery, etc. are becoming more and more Developing in the direction of large-scale, the caliber of its supporting slewing bearings and other components is getting larger and larger, and the ferrules required for slewing bearings are one of the important application fields for rolling ring forgings; petrochemical transportation pipelines and metal pressure vessel storage are increasingly used in large-caliber Flange connection is also one of the important application fields of rolling ring forgings.

With the development of wind power equipment and other industries, the demand for large ring forgings is increasing, and the market for rolling ring forgings is broad.

Ring forging has multiple advantages over other forging processes, such as small machining allowance and high material utilization rate; The internal quality of the processed ring parts is excellent; The forging environment is good, and vibration and noise are greatly reduced; Low processing cost.

The plasticity of rolled ring forgings is strong, and they are processed into flanges, gears, slewing ring rings, and other ring forgings using precision machining equipment such as CNC machines, with a wide range of applications. For example, the connecting flanges used for wind power tower barrels, due to their large diameter and heavy load-bearing capacity, cannot meet the requirements of flanges produced using splicing technology in the past. Now, they are generally produced using ring rolling technology; Engineering machinery, port machinery, etc. are increasingly developing towards large-scale direction, and their supporting components such as slewing bearings are becoming larger in diameter. The ring required for slewing bearings is one of the important application fields for rolling ring forgings; The storage of petrochemical transportation pipelines and metal pressure vessels is increasingly using large-diameter flange connections, which is also one of the important application fields for rolled ring forgings.

With the development of industries such as wind power generation equipment, the demand for large ring forgings is increasing, and the market for rolled ring forgings is vast.