Patent ID: 7525064
Filing Date: 2009-04-28
Classification: B23K,Y10T

Abstract:
1. A method of forming a flux layer on an aluminum plate member, the method comprising heating the aluminum plate member to degrease the aluminum plate member, stopping the heating step; cooling the aluminum plate member to room temperature immediately after the stopping step; spray-coating a flux composition comprising a flux and a binder, and other constituents other than the flux and the binder on the aluminum plate member after the stopping step and during the cooling step, drying the flux composition on the plate member during the cooling step; wherein the aluminum plate member has a thickness of 0.2-16 mm, and the flux composition is spray-coated on the aluminum plate member while a temperature of the plate aluminum member is in a range of 120-180° C., and the other constituents are volatilized to form the flux layer composed of the flux and the binder of 5-25 g/m