Zinc-Nickel Alloy Electroplating Bath Additives and Manufacturing Method of Zinc-Nickel Alloy Electroplating Steel Sheet Using the Same

摘要

The present invention provides a zinc-nickel alloy plating bath additive and a zinc-nickel alloy using the same to improve the nickel deposition rate of the plating layer by improving the glossiness and whiteness on the surface of the zinc-nickel alloy electroplating layer and by improving the roughness of the gold layer. The present invention relates to a method for manufacturing an electroplated steel sheet, according to the present invention, a plating bath additive comprising saccharin sodium or potassium salt, sodium benzoate or potassium salt, aryl alcohol and a surfactant, and adding the additive to a plating solution and plating concentration 50. A method of electroplating the plating solution on a steel sheet at -70 ° C, ph 1.0-4.5 current density 20-180 A / dm 2 and relative flow rate 0.5-2.5 m / sec is provided.