Apparatus for continuous electrolytic treatment of steel sheet and method for producing surface-treated steel sheet using the same

摘要

Provided are an apparatus for continuous electrolytic treatment of a steel sheet that is suitable for producing a surface-treated steel sheet and a method for producing the surface-treated steel sheet using the apparatus for continuous electrolytic treatment of a steel sheet. The apparatus includes N pairs of tabular electrodes having a length L and being arranged to respectively face two surfaces of a steel sheet. Each electrode includes n sections arranged in the longitudinal direction of the electrode and disposed on the surface of the electrode facing the steel sheet surface. Each section is constituted by a conductive portion including an electrode portion having a length T1 and a nonconductive portion made by making an electrode portion having a length T2 nonconductive, where n×N≧10, 0.96≧T2/(T1+T2)≧0.05, and 0.9≧T1/L≧0.1.

主权项

1. An apparatus for continuous electrolytic treatment of a steel sheet, the apparatus comprising N pairs of tabular electrodes having a length L being arranged to respectively face two surfaces of a steel sheet, each electrode including n sections arranged in the longitudinal direction of the electrode and disposed on the surface of the electrode facing the steel sheet surface, each section being constituted by a conductive portion including an electrode portion having a length T1 and a nonconductive portion made by making an electrode portion having a length T2 nonconductive, wherein n×N≧10, 0.96≧T2/(T1+T2)≧0.05, and 0.9≧T1/L≧0.1, wherein the nonconductive portion is arranged between conductive portions of the electrode in the longitudinal direction of the electrode, wherein the nonconductive portion includes an electrode portion extending in the longitudinal direction of the electrode that is covered with an insulator having water resistance and acid resistance.