Seamless Ring Rolling Process
The seamless rolled ring forging process starts with heating a pre-cut billet, then the malleable metal is placed on a hammer or press. The ring shape begins with a centerpiece "snapped" from the pre-form to produce a hollow center, similar to a donut, and moved to the ring mill. Once on the ring mill, the center of the part supported by a mandril and rollers apply pressure from different angles to gradually expand the ring. Rings made on a press are placed on a pin, supported by a saddle, then rotated as force is applied to expand the opening. Both techniques create circumferential grain flow creating the desired dimensions of the forged ring.
This is our high-tonnage Wagner ring mill and ring stretcher in action! The Wagner allows us to produce:
- Straight rolled rings
- Contoured rolled rings
The additional processing on our custom-engineered ring stretcher/sizer helps to minimize stock allowances, improve concentricity and cold-work aluminum rings.