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Open Die & Seamless Rolled Rings

Weights up to 60,000 lbs. in both ferrous and non-ferrous materials. The forging process produces rings with controlled grain flow, which gives strength and resistance to impact and fatigue not found in rings torch cut from plate, or rolled and welded.Rolled ring forging

Scot Forge Tailored Solutions

  • Small or large quantities of open die or rolled rings
  • Up to 252" maximum O.D.
  • Up to 49" maximum face height
  • Rolled ring weights to 60,000 lbs., open die weights to 300,000 lbs.
  • Downstream processing such as heat treat, testing, machining, segmenting, parting or splitting can all be performed in house
  • Guaranteed delivery programs

Why Forged Rings?

Typical problems associated with metal rings can frequently be traced to the metal-forming process. Cast rings are often plagued with substandard strength and integrity. Rolled and welded or cut rings from a plate are susceptible to fatigue and carry excess material and processing costs. 

The forging process produces rings with controlled grain flow, which gives strength and resistance to impact and fatigue not found in rings torch cut from plate, or rolled and welded.

In the cases below, these common problems were solved by switching to the forging process.

Forged Ring Advantages

  • Achieving structural integrity
  • Optimizing toughness  
  • Enabling size versatility

Open Die Ring Process Highlights

To produce open die rings, material is first upset, then pierced to form an inside diameter. The ring is then drawn over a mandrel, if necessary, to achieve desired dimensions.

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1. Breaking corners on starting billet stock

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2. Upsetting the material for reduction and grain flow

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3. Rounding the O.D. of the workpiece

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4. Piercing the workpiece

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5. Finishing the ring by opening the I.D. to size on a mandrel

Rolled Ring Process Highlights

To produce a rolled ring, a preform is made by upsetting and piercing a hole on center. This preform is then placed on a ring mill and, through radial and axial pressure, is opened up to desired dimensions.

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1. A hot ring "preform" has been placed on the ring mill

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2. The I.D. and O.D. begin opening up in the early rolling stage

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3. A thin-wall ring takes shape

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4. The finished rolled ring is measured for accuracy