US 12,447,492 B1
Thermal sprayed engine block remanufacturing
Bryce W Silvey, Auburn Hills, MI (US); and Martin S Kramer, Auburn Hills, MI (US)
Assigned to FCA LLC, Auburn Hills, MI (US)
Filed by FCA US LLC, Auburn Hills, MI (US)
Filed on Jan. 31, 2025, as Appl. No. 19/042,143.
Int. Cl. B23K 26/362 (2014.01); B05B 13/06 (2006.01); B23K 26/36 (2014.01); B23P 6/02 (2006.01); B23K 26/40 (2014.01)
CPC B05B 13/06 (2013.01) [B23K 26/36 (2013.01); B23K 26/362 (2013.01); B23P 6/02 (2013.01); B23K 26/40 (2013.01); B23P 2700/50 (2013.01); Y10T 29/49233 (2015.01); Y10T 29/49272 (2015.01); Y10T 29/49728 (2015.01); Y10T 29/49746 (2015.01)] 20 Claims
OG exemplary drawing
 
1. 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.