PRODUCTION OF PATTERNED COLORED FERRITIC STAINLESS STEEL SHEET

PURPOSE:To obtain a patterned colored ferritic stainless steel sheet rich in decorativeness by anodizing a ferritic stainless steel sheet with the central line mean roughness on the surface and X-ray integrated intensity ratio in the preferred orientation specified. CONSTITUTION:The center line mean...

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Bibliographic Details
Main Authors TARUYA YOSHIO, IMASAKA SHINICHI
Format Patent
LanguageEnglish
Published 16.12.1991
Subjects
APPARATUS THEREFOR
CHEMISTRY
ELECTROFORMING
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES
METALLURGY
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS
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Summary:PURPOSE:To obtain a patterned colored ferritic stainless steel sheet rich in decorativeness by anodizing a ferritic stainless steel sheet with the central line mean roughness on the surface and X-ray integrated intensity ratio in the preferred orientation specified. CONSTITUTION:The center line mean roughness on the surface of a ferritic stainless steel base material is adjusted to <=1.5mum. The X-ray integrated intensity ratio in the preferred orientation, viz. (111), (110), (100) or (211) faces, is controlled to >1.7. The properties are controlled by selecting the conditions in the solidification, ingot-making, rolling, cooling, etc. The steel sheet is anodized to develop an optical interference color pattern on the sheet surface. The anodization is preferably carried out in a mixed soln. contg. >=2mol/l of hexavalent chromium and >=2.5mol/l of sulfuric acid. A patterned colored ferritic stainless steel sheet having a lauan-like wooden-grain finish is obtained in this way.
Bibliography:Application Number: JP19900083384