Environmental phosphating solution

A kind of phosphating liquid, environmental protection technology, applied in the direction of metal material coating process, etc., can solve the problems of short service life of phosphating liquid, environmental treatment burden, high phosphating temperature, low cost, uniform and fine film layer, enhanced The effect of adhesion
CN104962893AInactive Publication Date: 2015-10-07DALIAN BETRUST ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
DALIAN BETRUST ENVIRONMENTAL PROTECTION TECH CO LTD
Publication Date
2015-10-07
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides an environmental phosphating solution, which belongs to the field of industrial phosphating solutions. The phosphating solution comprises Zn<2+>, Mn<2+>, Ca<2+>, nitrate, phosphate, edetic acid, citric acid, tartaric acid, phytic acid, polyhydroxy carboxylic acid compound, aluminium polychlorid and polyacrylamide. The phosphating solution prepared by adopting a method provided by the invention has the advantages of good stability, simplicity in technical operation, low difficulty of control technology, high film forming speed, uniformity and fineness of films, good corrosion resistance, wide application range, low cost and convenience in use and is favorable for industrial production, and the adhesive force of metal components and coatings is increased.
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Description

technical field

[0001] The invention belongs to the field of industrial phosphating solutions, in particular to an environment-friendly phosphating solution. Background technique

[0002] Phosphating refers to the process in which metal parts undergo chemical reactions, electrochemical reactions, etc. in phosphate solutions to form an insoluble phosphating film on the metal surface. As the bottom layer of the coating or the protective layer of the metal surface, the phosphating film can significantly improve the adhesion, corrosion resistance and protective performance of the coating, and is widely used in automobiles, home appliances, machinery, military and other industries.

[0003] At present, the common problems of domestic phosphating technology are: high phosphating temperature, short service life of phosphating solution, difficult washing and water pollution, which not only bring burden to environmental governance but also consume a lot of water, phosphate and other ...

Claims

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