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Common methods used in ring type forging

2024-03-07

Ring type forging refers to the process of manufacturing metal rings through forging techniques. Forging is a manufacturing method that involves shaping metal using localized compressive forces. The specific type of forging used for creating rings depends on factors such as the size and complexity of the ring, as well as the material properties required. Here are common methods used in ring type forging:

1. Rolled Ring Forging:

  - This is one of the most common methods for producing metal rings. In rolled ring forging, a cylindrical billet is pierced to create a hollow ring-like preform. The preform is then heated and placed on a mandrel, and gradually reduced in diameter using axial rolls. This process elongates the ring and reduces its wall thickness while increasing its diameter.

2. Upset Ring Forging:

  - Upset forging involves increasing the cross-sectional area of a workpiece by compressing it axially. In upset ring forging, a heated cylindrical billet is placed between dies, and axial force is applied to increase the diameter and reduce the height, forming a ring.

3. Open Die Forging:

  - Open die forging can also be used to produce rings, especially for larger and more irregularly shaped ones. The process involves hammering or pressing a metal workpiece between flat or shaped dies to achieve the desired shape.

4. Closed Die Forging:

  - Closed die forging, or impression die forging, can be employed for more complex and precision-shaped rings. The metal is shaped within dies that contain a precut profile of the ring.

5. Machined Rings:

  - After the forging process, rings may undergo additional machining operations to achieve precise dimensions, tolerances, and surface finishes.

The choice of forging method depends on factors such as the size, shape, and material of the ring, as well as the production volume and required tolerances. Common materials used for ring type forgings include carbon steel, alloy steel, stainless steel, and various non-ferrous alloys. Ring type forgings find applications in various industries, including aerospace, automotive, and oil and gas, where components like gears, bearings, and flanges often require the strength and reliability provided by forged rings.

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