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    • 5. 发明授权
    • Surface-treated steel sheet and manufacturing method thereof
    • 表面处理钢板及其制造方法
    • US06376092B1
    • 2002-04-23
    • US09673890
    • 2000-10-23
    • Kiyokazu IshizukaHidetoshi ShindoKimitaka HayashiDaisuke Ito
    • Kiyokazu IshizukaHidetoshi ShindoKimitaka HayashiDaisuke Ito
    • B32B1504
    • C23C28/3225C23C22/08C23C22/73C23C28/345Y10T428/12583Y10T428/12799Y10T428/12951Y10T428/12972
    • The present invention has an object to provide a surface-treated steel sheet which has highly balanced corrosion resistance and formability, and satisfies fundamental properties required mainly for steel sheets for automobile body, and a manufacturing method thereof. The surface-treated steel sheet of the invention is excellent in corrosion resistance and formability, comprising an amorphous inorganic film containing at least 5% magnesium and having a weight within a range of from 0.1 to 2.0 g/m2, formed on the surface of a zinc or zinc alloy plated steel sheet; wherein the inorganic film is soluble in an acidic solution and hardly soluble in a neutral or alkaline solution, and a manufacturing method thereof is provided. A zinc phosphate film may be provided between the galvanized steel sheet and the amorphous inorganic film. The inorganic film should preferably comprise one or more selected from the group consisting of phosphoric acid, phosphates, biphosphates, various condensed phosphoric acids, various condensed phosphates, organic phosphoric acid, and organic phosphates.
    • 本发明的目的是提供一种具有高度平衡的耐腐蚀性和成形性的表面处理钢板,并且满足主要用于汽车车身的钢板的基本特性及其制造方法。 本发明的表面处理钢板的耐腐蚀性和成形性优异,其特征在于,含有至少含有5%的镁,重量在0.1〜2.0g / m 2范围内的无定形无机膜, 锌或锌合金镀钢板; 其中无机膜可溶于酸性溶液,难溶于中性或碱性溶液,其制造方法。 可以在镀锌钢板和无定形无机膜之间设置磷酸锌膜。 无机膜应优选包含选自磷酸,磷酸盐,二磷酸盐,各种缩合磷酸,各种缩合磷酸盐,有机磷酸和有机磷酸盐中的一种或多种。
    • 6. 发明授权
    • Phosphate-treated galvanized steel sheet excellent in corrosion resistance and paintability
    • 磷酸盐处理镀锌钢板,耐腐蚀性和涂装性优异
    • US06596414B1
    • 2003-07-22
    • US09959877
    • 2001-11-09
    • Kiyokazu IshizukaHidetoshi ShindoKimitaka Hayashi
    • Kiyokazu IshizukaHidetoshi ShindoKimitaka Hayashi
    • B32B1500
    • C23C22/368C23C22/184C23C22/188C23C22/365C23C22/83Y10T428/12799
    • The present invention provides phosphate-treated galvanized steel sheet excellent in corrosion resistance and paintability, including: a phosphate-treated galvanized steel sheet excellent in corrosion resistance and paintability, comprising a phosphate film in an amount of at least 0.5 g/m2, containing at least 2 wt. % of Mg, and at least 0.5 wt. % in total of Ni and/or Mn, with at least 4 wt. % in total of Mg and Ni and/or Mn, formed on a zinc or zinc alloy plated steel sheet; and a phosphate-treated galvanized steel sheet excellent in corrosion resistance and paintability, comprising a phosphate film in an amount of at least 0.3 g/m2, preferably at least 1 g/m2, containing at least 2 wt. % of Mg, and at least 0.5 wt. % in total of Ni and/or Mn, with at least 5 wt. % in total of Mg and Ni and/or Mn, formed on a zinc or zinc alloy plated steel sheet.
    • 本发明提供耐腐蚀性和可涂饰性优异的磷酸盐处理的镀锌钢板,包括:耐腐蚀性和可涂饰性优异的磷酸盐处理的镀锌钢板,其含有至少0.5g / m 2的磷酸盐膜, 至少2重量% %的Mg和至少0.5wt。 Ni和/或Mn总量的%,至少4wt。 在锌或锌合金镀覆钢板上形成的Mg和Ni和/或Mn的总和% 以及耐腐蚀性和可涂饰性优异的磷酸盐处理的镀锌钢板,其含有至少0.3g / m 2,优选至少1g / m 2的磷酸盐膜,其含有至少2wt。 %的Mg和至少0.5wt。 Ni和/或Mn总量的%,至少5wt。 在锌或锌合金镀覆钢板上形成的Mg和Ni和/或Mn的总和%。