Patent ID: 9670871
Date: 2017-06-06
CPC Classifications: F02F,F16J,Y10T

Claim:
1. A method for producing a piston having at least one cooling channel for an internal combustion engine that is produced from at least one upper part and a lower part, where the upper part and the lower part of the piston are produced using a forging process, characterized in that during the forging of the upper part in an area of the cooling channel of the upper part in addition at least one rib-like element is forged at the same time and/or during the forging of the lower part in an area of the cooling channel of the lower part in addition at least one rib-like element is forged at the same time, and forging at the same time of the respective upper part and lower part a central weld support continuously, circumferentially and radially extending from the cooling channel radially inward to a piston stroke axis; and joining the upper and lower parts in the central weld area substantially all along the central weld support.