Patent ID: 6546626
Filing Date: 2003-04-15
Classification: B23K,B23P,F02F,F16C,F16J,Y10T

Abstract:
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.