Method and device for providing a layer to a piston ring
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United States of America Patent
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Jul 29, 2003
Grant Date -
N/A
app pub date -
Apr 18, 2002
filing date -
Nov 9, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a method for applying a layer to a piston ring blank, in particular for a piston ring of the kind that is intended for use in large diesel engines. A coating powder is supplied to one of succeeding portions of the piston ring blank, after which the coating powder is melted with the aid of an energy radiation means at a constant distance from the coating powder which was last supplied to the piston ring blank to form a coating layer on said portion of the piston ring blank. The energy radiation is allowed to act on the coating powder for a period of time which is adjusted so that substantially no heat, besides the heat required for melting the powder material develops. The invention also relates to a device for performing the method.
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