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    VERFAHREN ZUR AKTIVIERUNG VON ZU PHOSPHATIERENDEN VERZINKTEM STAHLBLECH
    8.
    发明公开
    VERFAHREN ZUR AKTIVIERUNG VON ZU PHOSPHATIERENDEN VERZINKTEM STAHLBLECH 审中-公开

    公开(公告)号：EP3129525A2

    公开(公告)日：2017-02-15

    申请号：EP15741927.6

    申请日：2015-04-07

    申请人： ThyssenKrupp Steel Europe AG ,  ThyssenKrupp AG

    发明人： JUNGE, Fabian ,  MÜLLER, Gregor ,  WEIHER, Nicole ,  MEYRING, Heinrich ,  PANTER, Frank

    IPC分类号： C23C18/30

    CPC分类号： C23C22/80 ,  C23C18/30 ,  C23C22/07 ,  C23C22/78 ,  C23F17/00 ,  C25D3/22

    摘要： The invention relates to a method for activating metal surfaces, in particular coated steel plate, preferably galvanized steel plate before a phosphating process, wherein the in particular coated, preferably electrolytically galvanized metal plate (2') is brought into contact with an activation bath (6) which contains activation particles dispersed in water, preferably based on phosphate and/or titanium. In order to reduce or even to resolve the problem of poor paint adhesion to preferably electrolytically galvanized, phosphated strip metal, according to the invention, at least one additive (A), which suppresses or at least slows an agglomeration of the activation particles, is supplied to the activation bath (6). Polyethylene glycol (PEG) and/or sodium stearate is preferably added as additive (A). In a particularly preferred embodiment of the method according to the invention, the particle size distribution of the activation particles in the activation bath (6) is identified and the activation bath (6) is renewed or removed from operation in dependence on the particle size distribution of the activation particles.

    摘要翻译： 在磷化工艺之前激活金属表面如镀锌钢板的方法可能涉及使金属表面与包含分散在水中的基于磷酸盐和/或钛的活化颗粒的活化浴接触 。 为了减轻或甚至消除表面涂层对优选电解镀锌的磷酸化金属条的粘附性差的问题，可以向活化浴中加入抑制或至少减缓活化颗粒附聚的添加剂。 在一些实例中，可以加入聚乙二醇（PEG）和/或硬脂酸钠。 此外，可以确定存在于活化浴中的活化颗粒的粒度分布，并且活化浴可以作为活化颗粒的粒度分布的函数被替换或者取消操作。