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Method for producing a piston or piston head for an internal combusition engine

  • US 20050028364A1
  • Filed: 07/30/2002
  • Published: 02/10/2005
  • Est. Priority Date: 09/19/2001
  • Status: Abandoned Application
First Claim
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1. Method for the production of a piston (10) or piston head for an internal combustion engine, having a combustion bowl (6) provided on the piston head, in which the piston (10) is formed from a cylindrical unfinished part (1) made of steel, whereby the cylindrical unfinished part (1) has at least one flat face (2) that is formed at a right angle to the longitudinal axis (9) of the unfinished part (1), characterized by the steps:

  • A) forming a ring-shaped, circumferential recess (3) in the face (2);

    B) applying additional material (4) into the recess (3), by means of an at least partially non-positive connection between the additional material (4) and the steel of the unfinished part (1);

    C) forging the unfinished part (1) produced according to steps A) and B) to produce a piston blank (5);

    D) machining the piston blank (5) to produce a finished piston (10), ready for installation in the internal combustion engine.

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