| 摘要 |
PROBLEM TO BE SOLVED: To provide a descaling apparatus for a steel strip which is capable of increasing a descaling rate and is suitable for miniaturization and an apparatus for producing the steel strip. SOLUTION: The surfaces of the stainless steel strip 1 are annealed in an annealing furnace 4, by which scale consisting of chromium oxides, or the like, is formed. The scale and more particularly the chromium oxides which are the main oxides thereof are dissolved and removed by electrolysis in an aq. neutral salt soln. electrolytic cell section 6. The other oxides are removed in an aq. alkaline soln. electrolytic cell section 12 and an aq. nitric acid soln. electrolytic cell section 16. The anodes 7d and cathodes 7e of the respective electrolytic cell sections are commonly used as electrolyte injection nozzles and inject the electrolyte to both surfaces of the steel strip 1 from their injection ports, by which thin electrolyte films are formed. Current is passed between both the electrodes via the electrolyte films, by which the steel strip 1 is descaled.
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