Piston for internal combustion engines, produced by means of a multi-orbital friction welding method
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United States of America Patent
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Jul 29, 2014
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app pub date -
Jan 30, 2009
filing date -
Feb 29, 2008
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Abstract
A method for producing a piston of an internal combustion engine, designed as a one-piece cooling channel piston. The piston includes an upper part and a lower part supported by corresponding circumferential joining bosses together forming a joining zone. In order to produce a bonded joint of the upper part and the lower part, the joining bosses are connected by means of multiorbital friction welding in the region of a rotationally symmetrical or rotationally asymmetrical joining zone.
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