A process for the preparation of a trapezium piston ring as well as trapezoid piston ring

摘要

A process for the preparation of an at least on one side, trapezoidally shaped piston ring, consisting of a base body with a radially outer running surface, upper and lower flank surfaces, of which at least a flank surface has a trapezoidal shape, as well as an inner circumferential surface, wherein in the running surface an at least at one side is introduced into chambers which, if required, at least partially with a wear-resistant material is filled, wherein at least the flank surfaces and the inner circumferential surface with a circumferential chromium layer are provided, which is subsequently in the transition region from the respective trapezoidal flank in the running surface is removed to such an extent that the transition region, a chromium-free wiping edge of the tread forms.