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    • 3. 发明授权
    • Process of forming phosphate coatings on metals
    • 在金属上形成磷酸盐涂层的工艺
    • US4950339A
    • 1990-08-21
    • US305214
    • 1989-02-01
    • Horst GehmeckerWerner RauschPeter Jorns
    • Horst GehmeckerWerner RauschPeter Jorns
    • C23C22/36C23C22/78
    • C23C22/362C23C22/78
    • A process to form phosphate coatings on individual parts of metal which at least on part of their surface consists of iron or steel. The individual parts are contacted at a temperature in the range of from 60 to 100 degrees centigrade for 3 to 30 seconds with an aqueous phosphating solution which contains 10 to 80 g/l zinc, 12 to 80 g/l phosphate (calculated as P.sub.2 O.sub.5), 40 to 150 g/l nitrate and, in addition 0.1 to 10 g/l fluoride, 0.01 to 10 g/l nickel, 0.0001 to 0.1 g/l copper, and may also contain tartaric acid, citric acid and/or manganese and in which the ratio of free acid to total acid has been adjusted to (0.1 to 0.3):1 and which contains at least 80 points of total acid and is virtually free of iron(II) ions. Prior to phosphating treatment, the individual parts may be cleaned and may optionally be treated to remove rust, scale and phosphate layers and/or be activated. After the phosphating treatment they may be passivated with an after-rinse solution. Each of said process steps is carried out for 3 to 30 seconds.
    • 在金属的单个部分上形成磷酸盐涂层的方法,其至少部分表面由铁或钢组成。 使用含有10至80g / l锌,12至80g / l磷酸盐(以P2O5计算)的磷酸盐水溶液将各个部件在60至100摄氏度的温度范围内接触3至30秒, ,40〜150g / l的硝酸盐,以及0.1〜10g / l的氟化物,0.01〜10g / l的镍,0.0001〜0.1g / l的铜,也可以含有酒石酸,柠檬酸和/或锰, 其中游离酸与总酸的比例已经被调节到(0.1〜0.3):1,并且其含有至少80个总酸,实际上没有铁(II)离子。 在磷化处理之前,可以清洁各个部件,并且可以任选地处理以除去锈,鳞屑和磷酸盐层和/或被活化。 在磷化处理后,可以用冲洗液进行钝化。 每个所述处理步骤进行3至30秒。