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Vorbehandlung und Nachbehandlung von technischen Federn durch beizen und tempern

Pre- and after-treatment of technical springs

The metal surfaces have to be free of fat, cinder and rust to enable an ideal adhesion of the spring coating. For a technical clearliness the springs are pickled with alkaline solutions and acids.

Pickling of technical springs

Technical springs were pickled with acids to remove rust and cinder. Combined with defating of the material, a totally clean surface of the metal parts can be achieved.

Tempering of technical springs

Tempering is a heat treatment of springs to drive hydrogen out of the surface and to avoid fractures. As an after-treatment method it is mainly used to galvanize.