| 摘要 |
PURPOSE:To manufacture one-side galvanized steel plate which is excellent in adhesion by the procedure in which a non-plating agent containing ZrO2 as the main component is coated on the one side of a steel plate and then the steel plate is baked by heating and passed through a hot galvanization bath. CONSTITUTION:The surface of a steel plate to be treated os cleansed by deoiling and then coated one-sidedly with a non-plating agent which is prepared by mixing and dispersing a mixture of ZrO2 fine power as the main component and an appropriate amount of at least one of Al2O3, SiO2, CaO, BaO, TiO2, MgO, NiO2, and V2O3 fine powder in an organic solvent or hydrocarbon containing a resin and a fat. The steel plate coated with the non-plating agent is dried in the air and baked, in which resin, fats, and hydrocarbon compounds present in non-plating agent are burned incompletely for carbonization and ZrO2 fine powders, etc., are adhered closely to the steel plate. Then, the steel plate is passed through a hot galvanization bath to obtain a complete one-side plated steel plate. Finally, non-plating agent adhered to the steel plate is removed by blushing or roll. |
