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1. 发明授权

US4867853A Process of producing phosphate coatings 失效
标题翻译：生产磷酸盐涂料的工艺
公开(公告)号：US4867853A
公开(公告)日：1989-09-19
申请号：US106165
申请日：1987-10-07
申请人： Dieter Hauffe , Rainer Kuhna , Gerhard Muller , Werner Rausch , Helmut Schumichen
发明人： Dieter Hauffe , Rainer Kuhna , Gerhard Muller , Werner Rausch , Helmut Schumichen
IPC分类号： C23C22/07 , C23C22/78 , C23G1/14
CPC分类号： C23G1/14 , C23C22/78
摘要： Disclosed is a process of producing a phosphate coating on a composite part consisting of steel and galvanized steel, which comprises alkaline cleaning, rinsing with an aqueous rinsing bath, and phosphatizing with an aqueous zinc phosphate solution. The formation of a non-uniform coating and of spots is avoided in the process of the invention by the use of a rinsing bath which contains at least 0.2 g/l alkali borate, at least 0.1 g/l alkali silicate and at least 0.05 g/l alkali nitrite, and which preferably contains said components in a total up to 5 g/l.If the composite part is to be activated with an activating bath which contains titanium phosphate before being contacted with the zinc phosphate solution, the activating bath must contain at least 1 g/l and preferably up to 4 g/l of tetraalkalipyrophosphate.The process of the invention can be used to prepare composite parts of steel and galvanized steel for subsequent painting, particularly by electrophoretic dip painting.
摘要翻译：公开了一种在由钢和镀锌钢构成的复合部件上生产磷酸盐涂层的方法，其包括碱性清洁，用水性漂洗浴漂洗，并用磷酸锌水溶液磷酸化。在本发明的方法中，通过使用含有至少0.2g / l碱金属硼酸盐，至少0.1g / l碱性硅酸盐和至少0.05g / l碱式亚硝酸盐，并且其优选地含有总计高达5g / l的所述组分。如果复合部件在与磷酸锌溶液接触之前用含有磷酸钛的活化浴活化，则活化浴必须含有至少1g / l，优选至多4g / l的四烷基磷酸盐。本发明的方法可用于制备钢和镀锌钢复合材料，用于随后的涂漆，特别是通过电泳浸涂法。

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