Seamless Rolled Rings

Philadelphia Forgings is a preferred supplier of seamless rolled rings and other superior forgings. Serving customers in Pennsylvania, New Jersey, Delaware, and across the nation, Philadelphia Forgings offers seamless rolled rings with enhanced densities and aligned grain flow. The weights of these seamless rolled ring forgings range from a few pounds to thousands of pounds while sizes range from two inches inside diameter (I.D.) to twenty feet outside diameter (O.D.).

The Rolled Ring Forging Process

The process of rolling seamless rings begins with open die forging which creates a preform workpiece. Open die forging processes, rounds, and upsets a piece of stock which aligns the grain flow of the metal. The workpiece is then punched in the center to create a hole necessary to place the workpiece in the ring mill.

The ring mill uses three different types of rolls: a driver roll, an idler roll, and two axial rolls. The idler roll rotates and applies pressure to the inside of the ring while the driver roll applies pressure to the outside of the ring. The metal begins to flatten and the diameter increases; the height of the ring, meanwhile, is controlled by the two axial rolls. The ring rolling process continues until the correct diameter is met.

Benefits of Seamless Rolled Ring Forgings

The open die forging process removes structural defects as well as porosity and aligns the grain flow in the preform workpiece. The rolling process itself creates rings with improved concentricity and smoothness. Furthermore, ring forgings that have been created in rolling mills are more cost effective. Companies who order our seamless rolled rings do not need to burn or machine out the inside diameter as is the case with plate products. With higher impact and fatigue resistance as well as a more predictable grain structure, seamless rolled rings offer the greater strengths and better mechanical properties that many manufacturers need.

Seamless Rolled Ring Forging Materials

Rolled rings are forged from many materials including stainless steel, carbon steel, alloy steel, aluminum alloy, brass alloy, titanium alloy, nickel alloys, copper, and many others. These forgings can meet nearly any strength requirement, whether for stress, impact, or load. Visit the forged materials section to see a full listing.