| 摘要 |
PURPOSE:To obtain an alloy plated steel sheet having good corrosion resistance and paintability for an automobile, etc. by discharging a plating soln. substantially in parallel with the surface of a strip thereby forming zinc alloy plating having a uniform component compsn. thereon. CONSTITUTION:A zinc alloy electroplating soln. is discharged substantially in parallel with the surface of a traveling strip in contact therewith. An ejecting nozzle is preferably disposed within + or -10 deg. relative with the surface of the strip. The abnormal thickening of the Zn(OH)2 layer and the effect of retarding the electrodeposition of Fe are effectively suppressed by such gushing flow of the plating soln. and the content of Fe uniform in the thickness direction of the plating layer is obtd. The alloy electroplated steel sheet having no deterioration in performance such as corrosion resistance is thus obtd.
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