Process for phosphating metals
    1.
    发明授权
    Process for phosphating metals 失效
    磷化金属的工艺

    公开(公告)号:US4559087A

    公开(公告)日:1985-12-17

    申请号:US600587

    申请日:1984-04-17

    IPC分类号: C23C22/73 C23F7/10

    CPC分类号: C23C22/73

    摘要: In a process for phosphating composite metals containing steel and zinc surfaces using phosphating solutions based on zinc phosphate by the dipping process, in order to achieve satisfactory formation of the phosphate layer, the composite metals are subjected to preliminary dipping for a maximum of 30 seconds in a phosphating solution based on zinc phosphate in order to initiate the formation of the phosphate layer, and are then conveyed to the main dip-phosphating zone.It is advantageous to spray the composite metals with a phosphating solution based on zinc phosphate while they are being conveyed from the preliminary to the main dip-phosphating zone, and it is advisable to limit the duration of the conveying and thus of the spraying treatment to a maximum of 30 seconds.

    摘要翻译: 在使用通过浸渍法的磷酸锌的磷化液对含有钢和锌的表面进行磷酸化的复合金属的方法中,为了达到令人满意的磷酸盐层的形成,复合金属经过预浸渍最多30秒钟 为了开始磷酸盐层的形成,以磷酸锌为基础的磷化液,然后被输送到主浸渍磷化区。 在将磷酸盐从磷酸盐初步输送到主浸渍磷酸盐区时,用磷酸盐磷酸盐溶液喷雾复合金属是有利的,并且建议将输送的持续时间和喷雾处理限制在 最多30秒。

    Process of forming phosphate coatings on metals
    3.
    发明授权
    Process of forming phosphate coatings on metals 失效
    在金属上形成磷酸盐涂层的工艺

    公开(公告)号:US4950339A

    公开(公告)日:1990-08-21

    申请号:US305214

    申请日:1989-02-01

    IPC分类号: C23C22/36 C23C22/78

    CPC分类号: C23C22/362 C23C22/78

    摘要: 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.

    摘要翻译: 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。