Abstract: In the method for the electro-deposition of a zinc-nickel alloy coating on a steel band, electrolytic nickel anodes and an electrolyte as free from chloride as possible and containing Zn.sup.2+ and Ni.sup.2+ ions is used. Operation is at current densities of at least 10 A/dm.sup.2, the metal content removed being replaced constantly during operation.

Abstract: In a method for electroplating a steel strip with a coating metal, in particular, zinc or a zinc-containing alloy, a thin protective layer consisting of the coating metal is temporarily electrodeposited on one side of the steel strip. After complete coating of the other side, this protective layer is completely or essentially removed in a stripping step in which the coated steel strip as the anode is moved through a stripping electrolyte. The stripping electrolyte contains a sequestering agent, advantageously sodium gluconate.

Abstract: A device for galvanically depositing a metal coating on a side of a metal strip includes an anode housing which is connected to a power supply and includes one or more planar, vertical electroplating plates. The metal strip is also connected to the power supply and serves as a cathode, and is supported for vertical movement past the electroplating plate a short distance therefrom and parallel thereto. The electroplating plate includes a generally vertical outlet slot which permits electrolyte to flow out of the anode housing to the region between the electroplating plate and metal strip, and a pump returns the electrolyte to the anode housing. In a preferred embodiment, the outlet slot tapers downwardly and is inclined at a small angle to a vertical reference.