Forging method for producing a piston or piston skirt
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United States of America Patent
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Dec 9, 2014
Issued Date -
N/A
app pub date -
Jun 26, 2012
filing date -
Jun 27, 2011
priority date (Note) -
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Abstract
A forging method for producing a piston skirt having two skirt walls and two box walls connecting the skirt walls may include forging, to the piston skirt, the skirt walls at least slightly conically towards the outside of the piston skirt via a first forging die. The box walls may be forged to the piston skirt, wherein each box wall has a hub inside and a hub outside. The box walls may be moulded via a second forging die, wherein the hub outside of each box wall runs at least one of substantially parallel to the piston axis and slightly sloping to an outside of their hub inside towards a free end of the piston skirt to the outside. The skirt walls may be drawn, simultaneously with moulding of the box walls, into a position that is approximately parallel to the piston axis.
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