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    • 4. 发明授权
    • Corrosion protection for galvanized and alloy galvanized steel strips
    • 镀锌和合金镀锌钢带的防腐蚀
    • US06537387B1
    • 2003-03-25
    • US09554038
    • 2000-07-06
    • Joerg Riesop
    • Joerg Riesop
    • C23C2200
    • C23C22/18C23C22/182C23C22/364
    • A process for the corrosion protection of steel strips coated with zinc or zinc alloy, characterised in that the steel strips coated with zinc or zinc alloy are brought into contact with an aqueous treatment solution having a pH within the range of from 1.5 to 3.5, which contains 1 to 20 g/l manganese(II) ions and 1 to 150 g/l phosphate ions, and the solution is dried without intermediate rinsing. Optionally the solution may contain in addition: up to 10 g/l zinc ions, up to 10 g/l nickel ions, up to 20 g/l titanium ions, up to 50 g/l silicon ions in the form of silicon compounds, up to 30 g/l fluoride ions, up to 150 g/l of one or more polymers or copolymers of polymerisable carboxylic acids selected from acrylic acid, methacrylic acid and maleic acid, and esters thereof with alcohols having 1 to 6 carbon atoms. The present invention also relates to the correspondingly-treated metal strips.
    • 一种涂有锌或锌合金的钢带的腐蚀保护方法,其特征在于,涂有锌或锌合金的钢带与pH在1.5至3.5范围内的水处理溶液接触, 含有1至20g / l的锰(II)离子和1至150g / l的磷酸根离子,并将溶液干燥而不进行中间漂洗。 任选地,该溶液可另外含有:高达10g / l的锌离子,高达10g / l的镍离子,高达20g / l的钛离子,高达50g / l硅化合物形式的硅离子, 高达30g / l的氟离子,至多150g / l的一种或多种选自丙烯酸,甲基丙烯酸和马来酸的可聚合羧酸的聚合物或共聚物,以及其与具有1至6个碳原子的醇的酯。 本发明还涉及相应处理的金属条。