GALVANIZING TREATMENT METHOD

PROBLEM TO BE SOLVED: To provide a galvanizing treatment method capable of obtaining a plating film having characteristics equal to those of the conventional one using a plating liquid in which the concentration of each additive is low. SOLUTION: A work is dipped into a plating liquid comprising: zinc chloride in 40 to 90 g/L, potassium chloride in 180 to 240 g/L, boric acid in 20 to 40 g/L, polyethylene glycol with a molecular weight of 6,000 to 20,000 in 2 to 5 g/L; and potassium benzoate in 2 to 5 g/L, and is subjected to pulse electrolysis, so as to be plated. The plating liquid may comprise: polyethylene glycol with a molecular weight of 6,000 to 20,000 in 0.5 to 5 g/L; and benzaldehyde in 0.5 to 2.0 g/L as well. The pulse electrolysis is performed preferably under the conditions satisfying an on time of 0.3 to 1.0 ms, a duty ratio of 5 to 20%, and an average current density of 2 to 5 A/dm2. COPYRIGHT: (C)2007,JPO&INPIT