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US 9,869,390 B2Granted
Wear-protection layer for piston rings
AssigneeFederal-Mogul Burscheid GmbH
InventorsMarcus Kennedy, Michael Zinnabold
Life of this patent
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Abstract
The invention relates to a novel wear-protection layer for piston rings of internal combustion engines and a method for applying a wear-protection layer of this type during production of a piston ring. The protective layer is characterized inter alia by reduced wear and high resistance to scuffing.
Claims11
A wear-resistant coating for piston rings, comprising:
- 15-25% by weight Fe,
- 10-20% by weight W,
- 20-30% by weight Cr,
- 15-25% by weight Ni,
- 1-5% by weight Mo,
- 0.1-0.5% by weight P,
- 0.01-0.1% by weight B,
- 0.1-5% by weight C,
- 0.1-2% by weight Si, and
- 10-15% by weight Nb.
7 more elements
A method for applying a wear-resistant layer to a substrate, comprising the steps of:
- (i) Providing the following ingredients in powder form;
- 15-25% by weight Fe,
- 10-20% by weight W,
- 20-30% by weight Cr,
- 15-25% by weight Ni,
- 1-5% by weight Mo,
- 0.1-0.5% by weight P,
- 0.01-0.1% by weight B,
- 0.1-5% by weight C,
- 0.1-2% by weight Si, and
- 10-15% by weight Nb,
- (ii) high-speed flame spraying of ingredients onto the substrate.
9 more elements
A piston ring, comprising a piston ring substrate coated with a wear-resistant layer comprising:
- 15-25% by weight Fe,
- 10-20% by weight W,
- 20-30% by weight Cr,
- 15-25% by weight Ni,
- 1-5% by weight Mo,
- 0.1-0.5% by weight P,
- 0.01-0.1% by weight B,
- 0.1-5% by weight C,
- 0.1-2% by weight Si, and
- 10-15% by weight Nb.
7 more elements
Dependencies are inferred from the claim text.