METHOD FOR CORROSION-PROTECTIVE AND CLEANING PRETREATMENT OF METALLIC COMPONENTS
The present invention relates to a method for the corrosion-protective and cleaning pretreatment of metallic components, produced at least partially from metallic materials from the elements iron, zinc and/or aluminium, with the use of an acid aqueous composition containing, in addition to the water...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The present invention relates to a method for the corrosion-protective and cleaning pretreatment of metallic components, produced at least partially from metallic materials from the elements iron, zinc and/or aluminium, with the use of an acid aqueous composition containing, in addition to the water-soluble compounds of the elements Zr and/or Ti causing the conversion of the metal surface, a mixture of an aliphatic diol and an aliphatic saturated polyhydroxy compound. It also comprises a chrome(VI)-free aqueous composition based on the constituents mentioned above which delivers outstanding results in cleaning and simultaneous corrosion-protective conversion of technical metal surfaces in one method step.
本发明涉及金属组件的抗腐蚀和清洁预处理的方法,所述金属组件至少部分地由选自元素铁、锌和/或铝的金属材料制成,使用除了元素Zr和/或Ti的水溶性化合物之外还含有脂族二醇和脂族饱和多羟基化合物的混合物的酸性含水组合物,所述元素Zr和/或Ti的水溶性化合物会导致金属表面的转化。还包含基于上述成分的不含铬(VI)的含水组合物,其在一个方法步骤中在工程金属表面的清洁和同时抗腐蚀转化方面具有优异的结果。 |
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