Nippon Kokan Kabushiki Kaisha

Tatsuro Anan

Shiro Fukunaka

Akira Tonouchi

Terumasa Jinba

Hiroshi Miwa

Toshio Kaneko

Nobuo Shiotani

A method for manufacturing a one-side electrogalvanized steel strip, which comprises: continuously causing a steel strip to travel through an electrogalvanizing bath in an electrogalvanizing tank; arranging an electrode plate in the electrogalvanizing bath in the electrogalvanizing tank in parallel to a one-side surface to be electrogalvanized of the steel strip; electrogalvanizing the one-side surface of the steel strip; arranging a spray nozzle toward the other surface not electrogalvanized of the steel strip which has passed through the electrogalvanizing tank; ejecting any one of an aqueous solution containing a weak acid of from 0.1 to 5.0 wt. % and a saturated monovalent alcohol having carbon atoms of up to 5 from the spray nozzle onto the other surface of the steel strip to wet the other surface of the steel strip; arranging a brush roll in close proximity to the spray nozzle on the same side as the spray nozzle; and rotating the brush roll while bringing same into contact with the other surface thus wet of the steel strip to eliminate contamination caused by the deposition of an electrogalvanizing solution on the other surface of the steel strip.

Method for manufacturing one-side electrogalvanized steel strip

Disclosed is a method for electroplating a steel strip by arranging a plurality of electrode rows each consisting of a plurality of electrodes disposed adjacent to each other along the direction of width of said steel strip in opposition to said strip travelling in an electrolytic cell holding an electrolytic solution, so that a metal constituting said electrodes may be electroplated on said steel strip, comprising the steps of intermittently or continuously transferring said electrodes of said electrode rows in a direction perpendicularly to the direction of travel of said steel strip at a speed so that a distribution of a deposition amount of the metal of said electrodes along the direction of width of said steel strip may be kept within an allowable tolerance, a width of said electrode rows being greater than the width of said steel strip; and unloading said electrode from one end of one of said electrode rows transferred by said transferring step and loading said electrode to the other end of said one electrode row or to an end of another of said electrode rows.

Method for electroplating steel strip

Growing community of inventors

Fukuyama, Japan

Tatsuro Anan