Welcome to Aditya Forge Works - Rajkot, Gujarat, India, Manufacturing the closed die forging of ring rolling of bearing parts and Automative components

The production of Aditya Forge Works is often performed by a process called ring rolling on rolling mills. These mills vary in size to produce rings with outside diameters of just a few inches up to 450 diameter" and in weights up to 35 kg.

The process starts with a circular preform of metal that has been previously upset and pierced (using the open die forging process) to form a hollow "donut". This donut is heated above the recrystallization temperature and placed over the idler or mandrel roll. This idler roll then moves under pressure toward a drive roll that continuously rotates to reduce the wall thickness, thereby increasing the diameters (I.D. and O.D.) of the resulting ring.

The Aditya Forge Works Forging Process
Producing a ring "preform" by the close die forging process:

1.	Starting stock cut to size by weight is first rounded, then upset to achieve structural integrity and directional grain flow.

2.	Work piece is punched, then pierced to achieve starting "donut" shape needed for ring rolling process.

3.	Completed preform ready for placement on ring mill for rolling.

4.	Ring rolling process begins with the idler roll applying pressure to the preform against the drive roll.

5.	Ring diameters are increased as the continuous pressure reduces the wall thickness. The axial rolls control the height of the ring as it is being rolled.

6.	The process continues until the desired size is achieved.