Method of producing a piston
AssigneeFederal-Mogul Nurnberg GmbH
InventorsBernhard Otte, Peter Konrad, Clemens Wallmann, Hans Werner Waldmann, Hans Wilhelm Bergmann
Life of this patent
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Abstract
In a method of producing a piston (10) for an internal combustion engine including at least one strengthened piston ring groove at least one relatively narrow groove (14) is configured in the region of the upper and/or lower flank of the provided piston ring groove (18) and the groove (14) is filled with a hard-wearing material (16) and the piston ring groove (18) is worked out such that the upper and/or lower flank is formed at least in part by the hard-wearing material (16).
Claims3
A method of producing a piston for an internal combustion engine, the piston being made of a base material and including at least one strengthened piston ring groove provided at a region of the piston and having upper and lower flanks, comprising the following steps:
- (a) configuring at least one relatively narrow groove in the region at which said one strengthened piston ring groove is to be provided, each said relatively narrow groove corresponding in location to one of said upper and lower flanks, and a portion of said base material remaining in said region adjacent said one relatively narrow groove,
- (b) filling said one relatively narrow groove by means of a laser source with a hard-wearing material, and
- (c) working out said one strengthened piston ring groove such that one of said upper and lower flanks thereof is formed by said hard-wearing material, the working out step including removing said remaining portion of base material.
Dependencies are inferred from the claim text.