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    Process of producing phosphate coatings on metals
    1.
    发明授权
    Process of producing phosphate coatings on metals 失效
    在金属上生产磷酸盐涂层的工艺

    公开(公告)号：US4824490A

    公开(公告)日：1989-04-25

    申请号：US110949

    申请日：1987-10-20

    申请人： Han Yong Oei ,  Gunter Siemund ,  Rudolf Vey

    发明人： Han Yong Oei ,  Gunter Siemund ,  Rudolf Vey

    IPC分类号： C23C22/13 ,  C23C22/18 ,  C23C22/36 ,  C23C22/17 ,  C23C22/86

    CPC分类号： C23C22/364

    摘要： Disclosed is a process of producing a phosphate coating on a metal having a surface which consists at least in part of iron or steel. The metal is contacted at a temperature in the range from 30.degree. to 50.degree. C. with a phosphatizing solution which contains 5 to 25 g/l zinc, 1 to 10 g/l manganese, 0.1 to 13 g/l iron(II), 5 to 40 g/l phosphate (calculated as P.sub.2 O.sub.5), 5 to 50 g/l nitrate, and which also contains 0.5 to 5 g/l fluoroborate (calculated as BF.sub.4), and 0.05 to 3 g/l tartaric acid and/or citric acid. The solution has been adjusted to weight ratios of Zn:P.sub.2 O.sub.5 =(0.5 to 3):1 and of Mn:Zn=(0.04 to 0.5):1 and to a ratio of free acid to total acid of (0.04 to 0.2):1.It is preferred to add nickel, copper and/or calcium to the phosphatizing solution and to adjust it to a content of Fe(II) not in excess of 10 g/l. The process is particularly suitable for preparing metals for cold working.

    摘要翻译： 公开了一种在具有至少部分由铁或钢构成的表面的金属上生产磷酸盐涂层的方法。 金属在30〜50℃的温度下与含有5〜25g / l的锌，1〜10g / l的锰，0.1〜13g / l的铁（II）的磷酸盐化溶液接触， ，5〜40g / l磷酸盐（以P2O5计算），5〜50g / l硝酸盐，还含有0.5〜5g / l氟硼酸盐（以BF 4计），0.05〜3g / l酒石酸和/ 或柠檬酸。 该溶液已经根据Zn:P2O5 =（0.5-3 ):1和Mn:Zn =（0.04-0.5 ):1的重量比和游离酸与总酸的比例（0.04-0.2）进行了调整： 1。 优选向磷酸盐溶液中加入镍，铜和/或钙，并将其调节至不超过10g / l的Fe（II）含量。 该方法特别适用于制备用于冷加工的金属。

    Process of phosphating metal surfaces
    2.
    发明授权
    Process of phosphating metal surfaces 失效
    磷化金属表面的工艺

    公开(公告)号：US5039361A

    公开(公告)日：1991-08-13

    申请号：US443212

    申请日：1989-11-28

    申请人： Dieter Hauffe ,  Jorg Hieke ,  Rudolf Vey ,  Gunter Siemund ,  Han-Yong Oei

    发明人： Dieter Hauffe ,  Jorg Hieke ,  Rudolf Vey ,  Gunter Siemund ,  Han-Yong Oei

    IPC分类号： C23C22/00 ,  C23C22/13 ,  C23C22/73

    CPC分类号： C23C22/00 ,  C23C22/13 ,  C23C22/182 ,  C23C22/36 ,  C23C22/73 ,  C23C22/86

    摘要： During a method of phosphating a metal surface which includes at least in part iron or steel and is dipped into or flooded with a phosphating solution which contains layer-forming cations and nitrate or equivalent accelerators, the iron content is limited by a precipitation of iron phosphate. A partial volume of the phosphating solution is intermittently withdrawn from the bath tank and in a separate aerator is contacted with oxygen or an oxygen-containing gas. The iron phosphate sludge is removed from the resulting solution, which is then returned to the bath tank. The partial volume of the phosphating solution is supplied from below into and is aerated in an aerator, which is provided with an aspirating aerating agitator and which is tapered at least in its lower portion. When the aerator has been terminated, the phosphating solution which has been depleted of iron(II) is sucked off upwardly and is returned to the bath tank.

    摘要翻译： 在磷化金属表面的方法中，该金属表面至少部分包括铁或钢，并浸入含有形成层的阳离子和硝酸盐或等效促进剂的磷酸盐溶液或淹没物中，铁含量受磷酸铁沉淀的限制 。 将部分体积的磷酸盐溶液间歇地从浴槽中取出，并且在单独的曝气器中与氧气或含氧气体接触。 从所得溶液中除去磷酸铁污泥，然后将其返回到浴槽。 磷酸盐溶液的部分体积从下方供给到曝气器中，曝气器设置有吸气式充气搅拌器，至少在其下部逐渐变细。 当曝气器已经被终止时，已经耗尽铁（II）的磷化溶液被向上抽吸并返回到浴槽。