What is Seamless Rolled Ring Forging?
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In this blog post, we&#;ll look at seamless rolled ring forging what it is, what it&#;s used for, and the industries in which you&#;ll find it.
Seamless forged rings are created through a process called ring rolling, which uses a machine called a rolling mill. The rolling mill can generate rings of a range of diameters and weights.
The process starts with a circular metal piece that is pierced to form a doughnut-shaped component. After this ring is formed, it&#;s heated to recrystallization temperature. From there it&#;s placed on an idler roll and moves towards a drive roll. This step causes the ring to rotate and increases their diameter and the wall thickness of the rolling rings.
Seamless rings are produced using a range of configurations: tall cylinders, smaller parts resembling washers, etc., manufactured using a shaping tool.
Seamless rolled rings are used for:
You&#;ll find them being used in the mining, power generation, and oil industry, as well as by the military. They help power rock crushing equipment, jet engines, windmills and railways.
If you&#;re interested in learning more about seamless rolled ring forging, Specialty Ring Products can help.
For more than a century, we&#;ve been a leader in the forging industry, a four-generation family owned company committed to quality work and evolving our processes and standards. Contact us today to learn more, or click here to request a forging quote.
The production of seamless forged rings is often performed by a process called ring rolling on rolling mills. These mills vary in size to produce rings with outside diameters of just a few inches to over 300 inches and in weights from a single pound up to over 300,000 pounds.
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The process starts with a circular preform of metal that has been previously upset and pierced (using the open die forging process) to form a hollow &#;doughnut.&#; This doughnut is heated above the re-crystallization temperature and placed over the idler or mandrel roll. This idler roll then moves under pressure toward a drive roll that continuously rotates to reduce the wall thickness, thereby increasing the diameters (I.D. and O.D.) of the resulting ring.
Seamless rings can be produced in configurations ranging from flat, washer-like parts to tall, cylindrical shapes, with heights ranging from less than an inch to more than 9 feet. Wall thickness to height ratios of rings typically range from 1:16 up to 16:1, although greater proportions can be achieved with special processing. The simplest and most commonly used shape is a rectangular cross-section ring, but shaped tooling can be used to produce seamless rolled rings in complex, custom shapes with contours on the inside and/or outside diameters.
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