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Shear Spinning

2018-09-03

Shear spinning is a process related to conventional spinning and is also known as flow turning or spin forging. In a conventional spinning operation the work is essentially formed by bending. There is usually not much change in the thickness of the sheet metal. The diameter of the work in conventional spinning must be large enough to account for the size of the final part. Shear spinning involves forming the work over the mandrel, causing metal flow within the work. This metal flow will act to reduce the thickness of the work as it is formed. The initial diameter of the work can be smaller in shear spinning. Limits to the amount of reduction of work thickness exist in order to prevent fracture. Coolants are normally used in shear spinning, since this manufacturing process can generate a lot of heat. One or two rollers, (tools), may be used, two will provide a better balance of forces during the operation. Shear spinning of some materials will be conducted at elevated temperatures.

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