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There are multiple reasons for a mechanical treatment of technical springs. At first they can be essential e.g. for stamped products to reduce sharp edges and to avoid injuries when handling the product.
Furthermore the front sides of technical compression springs are grinded to ensure a flat locating surface for assembly.
For the dressing of complexe moulds, the environmentally friendly plasma-polishing is used. With this method the mechanical stress while grinding is very small and a subsequent bending of the spring is impossible.
Slide grinding (Rotofinishing) also called scrubbing means to remove cutting burr and residues from technical springs. A special application on this is vibratory slide grinding.