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Rolling Procedure |
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Ring cold rolling is a specific kind of cold forming which is high efficient. The principle is characterized by two tools, a driven roll which contributes the outer profile and a free rotating mandrel for the inner profile. Both tools are rotating whereby the workpiece is moved as well. While gap between roll and mandrel gets reduced, tool’s profiles are pressed into the workpiece. The diameter of workpiece increases and the wall thickness decreases. Additionally cold forming hardens the material. The finished workpiece has got an inner and/or outer profile and is ready for grinding. |
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Roll Phases
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Benefits of cold compared to conventional machining: |
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