Apparatus for continuous electrolytic treatment of steel sheet and method for producing surface-treated steel sheet using the same
US9580816B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2011 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Nov 20, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D17/12
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.