Patent ID: 9676061
Date: 2017-06-13
CPC Classifications: B23K,B32B,C21D,C22C,C23C,F16B,Y10T

Claim:
1. A method of fabricating a precoated steel plate, the method comprising: (A) coating a steel plate by dipping the steel plate in a molten bath to obtain a precoat upon the steel plate, wherein the precoat consists of (i) an intermetallic alloy layer and (ii) a metal alloy layer, wherein the intermetallic alloy layer (i) is topped by the metal alloy layer (ii); and (B) on at least one face of the plate, removing the metal alloy layer (ii) in an area at a periphery of the plate using a laser beam, while leaving at least part of the intermetallic alloy layer (i) in the area, the removing step including: