Patent ID: 6280528
Filing Date: 2001-08-28
Classification: C11D,C23F,C23G

Abstract:
A method of cleaning a surface of a metallic article and applying a corrosion inhibiting film thereto which includes subjecting the metallic article to an aqueous metal treatment bath, wherein said method comprises the steps of;(a) providing a surface cleaner detergent selected from the group consisting of sodium metasilicate and tetrapotassium pyrophosphate;(b) providing a corrosion inhibitor selected from the group consisting of sodium benzoate, sodium tolyltriazole, and benzotriazole;(c) blending said surface cleaner detergent and said corrosion inhibitor to form a powdered mixture;(d) loading said powdered mixture into a retainer pouch consisting of a water soluble polyvinylalcohol film;(e) placing said retainer pouch into an aqueous metal treatment bath;(f) dispersing and dissolving said powdered mixture of said surface cleaner detergent and said corrosion inhibitor into said aqueous metal treatment bath; and(g) cleaning said surface of said metallic article and applying a corrosion inhibiting film to said surface of said metallic article by immersing said metallic article into said aqueous metal treatment bath containing said surface cleaner detergent and said corrosion inhibitor.