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Process for the phosphatisation of zinc or aluminum surfaces
Process for the phosphatisation of zinc or aluminum surfaces
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机译:锌或铝表面的磷化工艺
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摘要
The invention relates to a method for phosphatizing zinc or aluminium surfaces with a phosphatizing solution containing 0.5 to 2.0 g/l Zn2+, 0.3 to 2.0 g/l Ni2+, 0.1 to 0.4 g/l NH2OH, at least 3.0 g/l NO3- and 10.0 to 20.0 g/l phosphate (calculated as P2O5). Said solution is applied to the surfaces by immersion or spraying at 35 to 75 DEG C, the immersion time being 0.5 to 10 minutes and the spraying time being 3 seconds to 5 minutes.
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机译:本发明涉及一种用含0.5至2.0g / l Zn 2+,0.3至2.0g / l Ni 2+,0.1至0.4g / l NH 2 OH的磷化溶液使锌或铝表面磷化的方法。至少3.0g / l的NO 3-和10.0至20.0g / l的磷酸盐(以P 2 O 5计算)。通过在35至75℃下浸渍或喷涂将所述溶液施用于表面,浸渍时间为0.5至10分钟,喷涂时间为3秒至5分钟。
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