PROCESS OF FORMING PHOSPHATE COATINGS ON METALS
In order to form phosphate coatings on individual parts of metal which at least on part of their surface consist of iron or steel, the individual parts are contacted at a temperature in the range from 60 to 100.degree.C for 3 to 30 seconds with a phosphating solution which contains 10 to 80 g/l zinc...
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| creator | RAUSCH, WERNER GEHMECKER, HORST JOERNS, PETER |
| description | In order to form phosphate coatings on individual parts of metal which at least on part of their surface consist of iron or steel, the individual parts are contacted at a temperature in the range from 60 to 100.degree.C for 3 to 30 seconds with a phosphating solution which contains 10 to 80 g/l zinc; 12 to 80 g/l phosphate (calculated as P2O5); 40 to 150 g/l nitrate and, in addition;0.1 to 5 g/l fluoride; 0.01 to 10 g/l nickel; 0.001 to 0.1 g/l copper, as the case may be also 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. Before the 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 afterrinse solution. Each of the process steps is carried out for 3 to 30 seconds. |
| format | Patent |
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Before the 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 afterrinse solution. 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Before the 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 afterrinse solution. 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Before the 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 afterrinse solution. Each of the process steps is carried out for 3 to 30 seconds.</abstract><edition>5</edition><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre |
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| subjects | CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION |
| title | PROCESS OF FORMING PHOSPHATE COATINGS ON METALS |
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