Rolled ring forging is a process where a preformed metal disc (usually a steel alloy) has a hole punched through its center via the open die forging process. The remaining “doughnut” is superheated for recrystallization and then set onto a rolling mill and squeezed to shape the ring to meet the desired measurements. This provides several significant benefits for the end-user of the forged steel ring.
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Because of the forging process, these rolled rings are extremely strong, even under high temperatures. Where other components fail, forged rolled rings keep performing. As a result, forged rolled rings are popular for jet engines, windmills, paper mills, and many other uses.
Because of the high-temperature forging and recrystallization process rolled rings undergo, the finished rings handle high-temperature environments very well. As an added bonus, they handle high-temperature fluctuations exceptionally well.
Forged rolled rings can be made of any forgeable metal, including stainless steel, carbon steel, and other alloys. Because forged rolled rings have exceptional strength. They are highly valued in the following businesses:
You’d think that the forging process is more time-consuming than other methods, but forgings are competitively priced for steel rings fabricated using different methods. These methods often involve a lot of machining to get the steel rings the correct size.
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The forged rolled rings produced in rolling mills allow you to fabricate forged rings anywhere from a few inches to over 300 inches in diameter.
Seamless rolled rings are a type of metal product that is used for many different reasons and are made through rolled ring forging. The process is both very unique and interesting while yielding a product that can vary greatly in size. Pieces created by this type of forging can range in size from being a few inches in diameter to over 300 inches and weigh a single pound to over 300,000 pounds.
The ring rolling forging process begins with a heated circular mass of metal that is ready to be molded after being formed and pierced to form a hollow “doughnut”. This is then heated to a high temperature and placed over the mandrel roll. The roller then moves under extreme pressure towards the constantly rotating drive roll that reduces the thickness, increasing the diameter of the final product. It can produce everything from flat washers to tall cylindrical parts.
Rolled ring forging is a type of open die forging. The starting material is cut to size by weight and then rounded. It is upset, to achieve structural integrity and a specific directional grain flow. The workpiece is then punched and pierced to make the “doughnut” that is crucial to the ring rolling process. After it is pierced, it is placed on the ring mill for rolling. This is where the actual ring rolling process begins. The idler roll is used to apply pressure to the material against the drive roll. The ring diameter is slowly increased until the desired shape is achieved.