Patent ID: 9488126
Filing Date: 2016-11-08
CPC Classification: C23C,F02F

Claim Text:
1. A method for the production of a cylinder working surface for a cylinder crankcase housing of an internal combustion engine in which the working surface is protected from corrosion via a cathodic protective effect, comprising the following method steps: (a) pre-honing of the inner surface of a cylinder liner composed of a cast iron material, with the formation of depressions in the surface using a honing tool having honing stones; (b) application of a zinc-containing coating material onto the pre-honed surface; (c) finish-honing of the coated surface, in such a manner that the zinc-containing coating remains only in the depressions formed by means of the pro-honing, such that the remaining zinc coating material forms a cathodic protective effect against corrosive attack on said cast-iron material.