Method for producing a piston ring
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United States of America Patent
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Mar 10, 2015
Grant Date -
Jul 25, 2013
app pub date -
Aug 13, 2011
filing date -
Oct 9, 2010
priority date (Note) -
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Abstract
Method for producing a piston ring having an axial height <2 mm, said piston ring having a radially outer running surface provided with at least one rail, a radially inner circumferential surface, and upper and lower flank surfaces extending therebetween, wherein said rail is provided with a contour that is tapered radially outwardly, thereafter the running surface, together with the flanks of the tapered rail, is provided with at least one wear-resistant layer, and then only the flank of the rail that is to form a scraping edge is subjected to at least partial material removal to form the scraping edge.
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