Kolbenringe.

摘要

A method is described for the manufacture of piston rings, the method comprises the steps of producing a tube (10) and machining the desired ring free shapes on the inner (24) and outer (22) diameters, providing cross sectional profiles by grinding, for example, and then cutting the individual rings (34) from the tube. The ring gaps are preferably formed after cutting the ring from the tube. Coatings on the ring outer surface may be applied and shaped whilst in tube form.