How to manufacture the piston and piston for internal-combustion engines

Japanese Patent JP5984809

B2

A method for producing a piston for an internal combustion engine, composed of first and second piston components, has the following steps: (a) providing a blank of the first piston component composed of a tempered or precipitation-hardened steel, having at least one joining surface, (b) providing a blank of the second piston component composed of a tempered or precipitation-hardened steel, having at least one joining surface, (c) tempering or precipitation-hardening the blanks, (d) friction-welding the joining surfaces of the blanks to produce a piston blank, with the formation of at least one friction-welding seam and a heat influence zone in the region of the at least one friction-welding seam, (e) annealing or low-stress annealing of the piston blank, thereby obtaining the heat influence zone(s), (f) re-machining and/or finishing the piston blank to produce a piston. A piston so produced is also provided.

JP4254593	Internal combustion engine piston
WO/2006/048153	METHOD FOR THE PRODUCTION OF A PISTON OF AN INTERNAL COMBUSTION ENGINE IN ORDER TO FORM A REINFORCEMENT OF A COMBUSTION CHAMBER CAVITY OF THE PISTON
JP7015470	Internal combustion engine piston

Liner sharp
Claus Keller

JP2013523485A

September 06, 2016

August 09, 2011

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MAHLE International GmbH

F02F3/00; F02F3/16; F02F3/26

JP2007270812A
JP10298663A
JP9239569A
JP2001082247A
JP2004505195A
JP2007524512A

Einzel Felix-Reinhard
Takuya Kuno

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