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US 6,555,241 B1Granted
Cast aluminum part having a casting surface
AssigneeVAW motor GmbH
InventorsHermann W. Erbslöh, Franz Josef Feikus, Erich Lugscheider, Frank Löffler, Christian Wolff
Life of this patent
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Abstract
A cylinder block of an internal combustion engine has several cylinder bores. The surfaces surrounding the cylinder bores have wear-resistant coatings which closely reproduce the surfaces. The coatings are formed by Plasma Vacuum Deposition.
Claims18
An aluminum casting, comprising:
- a machined internal cylindrical casting surface having a core roughness of approximately 0.5 micrometers to approximately 3.0 micrometers, a reduced peak height of approximately 0.1 micrometers to approximately 2.0 micrometers, and a reduced groove depth of approximately 0.5 micrometers to approximately 5.0 micrometers;
- and
- a vapor deposited wear resistant coating on said casting surface, said coating having a core roughness of approximately 0.5 micrometers to approximately 2.8 micrometers, a reduced peak height of approximately 0.1 micrometers to approximately 1.8 micrometers, and a reduced groove depth of approximately 0.5 micrometers to approximately 4.8 micrometers.
Dependencies are inferred from the claim text.