Patent ID: 8502104

Claim:
A method of building up an aluminum alloy part by welding and using a scraper that includes at least one support foot that rests an outer surface of said aluminum alloy part, and a scraper blade that is set back relative to the at least one support foot, the aluminum alloy part having a build-up zone to be built-up, the method comprising: using a mask with an opening having substantially a same dimension as a peripheral section of the build-up zone, said mask having a predetermined thickness; positioning the mask on said part by causing said opening to correspond with the build-up zone; manually depositing a powder layer of aluminum alloy powder on the build-up zone, said powder layer overlapping onto said mask around said build-up zone; placing the support foot of the scraper on the outer surface of said aluminum alloy part and smoothing the powder layer with the scraper to a calibrated height relative to the outer surface of said part, the calibrated height being larger than the thickness of the mask and the calibrated height corresponding to a distance between the scraper blade and the outer surface of said part; and welding said powder layer onto said part by laser welding so as to build-up the build-up zone.