| 摘要 |
PURPOSE:To manufacture the titled heat-resistant painted steel sheet having excellent heat resistance and further having excellent firmness of attachment of a paint, corrosion resistance, and compression-moldability by coating a paint consisting essentially of tetrafluoroethylene resin, etc. on the electrolytically chromate-treated coated film of a steel sheet, and baking the paint. CONSTITUTION:A coated film of metallic chromium and chromium oxide is formed on the surface of a steel sheet by electrolytic chromate treatment, and a paint consisting essentially of a mixture of tetrafluoroethylene resin and another heat-resistant resin (e.g., polyphenylene sulfide) is coated on the coated film. After the solvent is evaporated, the paint is baked at >=400 deg.C in an induction heater. The painted steel sheet thus obtained has usable heat resistance at about 260 deg.C, and also excels in firmness of attachment of a paint, corrosion resistance, compression-moldability, and non-cohesiveness.
|
