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Forged rolled rings—your superior seamless solution.

Forged roll rings

Typical problems associated with metal rings can frequently be traced to the metalforming process. Cast rings are often plagued with substandard strength and integrity. Rolled and welded or cut rings from plate are susceptible to fatigue, and carry excess material and processing costs. In the cases below, these common problems were solved by switching to the forging process.

Product/application

Corrosion-resistant profiled ring, 200" O.D. and 42" face

Material

Nickel Aluminum Bronze

Previous processing problems

Three different metalworking processes were attempted to make one ring: a forging, a casting, and a rolled and welded plate.

  • The cast ring failed sonic requirements and had inclusion problems which required excessive machining and weld repair.
  • Extensive welding on the fabricated ring reduced part integrity, jeopardized corrosion resistance and caused distortion of the ring's shape.

Forging as the solution

Today a forged, profiled seamless rolled ring produces unsurpassed structural integrity.

  • Overall strength is increased through forging's directional grain flow.
  • With the absence of welding, part integrity, corrosion resistance and shape are maintained.
Forged submarine propulsor

Product/application

Large gear

Material

Alloy Steel

Cast shovel

Previous processing problems

The part was previously produced as a cast ring, with high maintenance and repair costs.

  • The absence of grain flow and directional strength caused part integrity problems.
  • Gears were breaking in the field due to fatigue failure, shortening the service life of the product.
Forged shovel

Forging as the solution

Today the part is made as a contoured forged ring.

  • Forging yields improved mechanical properties, reducing the risk of part fatigue and breakage.
  • The continuous grain flow, provided by the forging process, optimizes part integrity and impact toughness.

Product/application

Bearing application component

Material

Alloy Steel

Ring size

95-7/8" O.D. X 40-5/8" I.D.
X 8-5/8" Thick

Cast bearing component

Previous processing problems

The past production process involved torch cutting a heavy wall ring from plate.

  • Excess waste was substantial, since all corner stock and the full center slug of the plate were lost.
  • Desired plate sizes and grades were sometimes difficult to obtain due to ring thickness.
  • Parts were rejected due to inclusions found on the polished surface of the plate.
Forged bearing component

Forging as the solution

Today a custom-forged rolled ring allows greater size versatility while oftentimes reducing waste and material costs.

  • Porosity, laminations and inclusions sometimes found in plate are eliminated through the refined grain flow inherent in a forging.