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    • 8. 发明申请
    • GALVANIZED STEEL-SHEET WITHOUT SPANGLE, MANUFACTURING METHOD THEREOF AND DEVICE USED THEREFOR
    • 没有角度的钢化钢板,其制造方法及其使用的装置
    • WO2006070995A1
    • 2006-07-06
    • PCT/KR2005/003637
    • 2005-10-31
    • POSCOKIM, Sang-HeonCHO, Noi-HaJIN, Yeong-Sool
    • KIM, Sang-HeonCHO, Noi-HaJIN, Yeong-Sool
    • C23C2/00
    • C23C2/26C23C2/003C23C2/06C23C2/16C23C2/40Y10T428/12757Y10T428/12972
    • Disclosed herein are a spangle-free, hot-dip galvanized steel sheet, and a method and device for manufacturing the same. The hot-dip galvanized steel sheet is characterized in that a solidified zinc crystal of hot-dip galvanized layer has an average crystalline texture particle diameter of 10 to 88, and there is no solidification traces of dendrites upon observing under a microscope at a magnification of 100X. The hot-dip galvanized steel sheet comprises dipping a steel sheet in a bath of a zinc-coating solution containing 0.13 to 0.3% by weight of aluminum; air-wiping the steel sheet to remove an excess of the coating solution; spraying water or an aqueous solution on the air-wiped steel sheet, using a steel sheet temperature in the range of a hot-dip galvanization temperature to 419°C as a spray initiation temperature and using a steel sheet temperature in the range of 417°C to 415°C as a spray completion temperature; passing sprayed liquid droplets of water or aqueous solution through a mesh-like high- voltage charged electrode which is electrically charged with a high voltage of -1 to -50 kV; and allowing the electrode-passed liquid droplets to be bound to the surface of the steel sheet and thereby being served as solidification nuclei of molten zinc. The hot-dip galvanized steel sheet of the present invention exhibits superior corrosion resistance, blackening resistance, oil stain resistance, surface friction coefficient and surface appearance, and can be used for a variety of materials such as inner and outer plates of car body, household electric appliances and construction materials and steel sheet for painting.
    • 本发明公开了一种无角度的热浸镀锌钢板及其制造方法和装置。 热浸镀锌钢板的特征在于,热浸镀锌层的固化锌结晶的平均结晶组织粒径为10〜88,在显微镜下观察时不存在树枝状凝固痕迹, 100X。 热浸镀锌钢板包括将钢板浸渍在含有0.13〜0.3重量%的铝的锌镀液中, 对钢板进行空气擦拭以除去过量的涂布液; 使用钢板温度在热浸镀锌温度至419℃的范围内的钢板温度作为喷雾开始温度,并使用钢板温度在417°的范围内,在空气擦拭的钢板上喷涂水或水溶液 C至415℃作为喷涂完成温度; 通过喷射的水或水溶液的液滴通过以-1至-50kV的高电压充电的网状高压充电电极; 并且使电极通过的液滴与钢板的表面结合,从而作为熔融锌的固化核。 本发明的热浸镀锌钢板具有优异的耐腐蚀性,耐黑变性,耐油污性,表面摩擦系数和表面外观,可用于各种材料,如车身内外板,家用 电器及建筑材料及钢板。