Thermal sprayed engine block remanufacturing
AssigneeFCA Corporation
InventorsBryce W Silvey, Martin S Kramer
Life of this patent
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Abstract
A method of remanufacturing an engine block includes providing an engine block having at least one cylinder bore with a bore interior surface having a thermal spray coating deposited thereon, determining at least a portion of the thermal spray coating is out of specification, performing a laser texture ablation (LTA) process on the thermal spray coating to remove at least a portion of the thermal spray coating and leave a textured surface, and performing a thermal spray coating operation by spraying an additional thermal spray coating on the textured surface, to thereby prevent scrapping of the engine block with the out of specification thermal spray coating.
Claims20
A method of remanufacturing an engine block, the method comprising:
- providing an engine block having at least one cylinder bore with a bore interior surface having a thermal spray coating deposited thereon;
- determining at least a portion of the thermal spray coating is out of specification;
- performing a laser texture ablation (LTA) process on the thermal spray coating to remove at least a portion of the thermal spray coating and leave a textured surface;
- and
- performing a thermal spray coating operation by spraying an additional thermal spray coating on the textured surface, to thereby prevent scrapping of the engine block with the out of specification thermal spray coating.
A method of manufacturing an engine block to prevent scrapping of an out of specification engine block, the method comprising:
- providing an unfinished engine block having at least one cylinder bore;
- performing a pre-bore operation on the at least one cylinder bore;
- performing a surface activation operation to provide a textured substrate surface in the at least one cylinder bore;
- performing a first thermal spray coating operation to deposit a first thermal spray coating on the textured substrate surface;
- performing a honing operation on the at least one cylinder bore;
- determining at least a portion of the first thermal spray coating is out of specification;
- performing a laser texture ablation (LTA) process on the first thermal spray coating to remove at least a portion of the first thermal spray coating and leave a textured surface;
- and
- performing a second thermal spray coating operation by spraying a second thermal spray coating on the textured surface of the first thermal spray coating, to thereby prevent scrapping of the engine block with the out of specification thermal spray coating.
Dependencies are inferred from the claim text.