Metal working – Method of mechanical manufacture – Prime mover or fluid pump making
Patent
1996-05-16
1998-02-03
Cuda, Irene
Metal working
Method of mechanical manufacture
Prime mover or fluid pump making
295274, B23P 1700
Patent
active
057131295
ABSTRACT:
A coated piston ring and method of manufacture for internal combustion engines and compressors. The piston ring having a outer peripheral surface that is coated with a thin substantially final finish spray wear resistant coating for contacting the cylinder wall. The material coating is deposited by high velocity oxygen fuel spray apparatus and a sharp bottom edge is lapped thereon for contacting the cylinder wall of the apparatus. The method of manufacturing comprising rotating a plurality of piston rings about a central axis while the high velocity oxygen fuel gun sprays molten coating material thereon. The molten coating material forming a mechanical interlock with the ring blank to produce a substantially final finish spray coating on the periphery of the piston rings.
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Rastegar Freidoon
Richardson Dana E.
Winter John S.
Cuda Irene
Cummins Engine Company, Inc.
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