A kind of manganese series phosphating solution additive and using method thereof

A manganese-based phosphating solution and additive technology, applied in the direction of metal material coating process, can solve the problems of short service life of phosphating solution, environmental treatment burden, and difficulty in washing, and achieve low cost, reduce sediment, and speed up production. Effect of Membrane Speed
CN104962898BActive Publication Date: 2017-09-26DALIAN BETRUST ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN BETRUST ENVIRONMENTAL PROTECTION TECH CO LTD
Publication Date
2017-09-26

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Abstract

The invention provides a manganese-based phosphating solution additive and a using method thereof, belonging to the field of industrial phosphating solutions. The additives include manganese dihydrogen phosphate, sodium fluorosilicate, tartaric acid, citric acid, HEDP, polyvinyl alcohol, starch phosphate monoester and gluconic acid; the degree of substitution of the starch phosphate monoester is 0.12. Compared with the prior art, the manganese-based phosphating solution additive of the present invention has the advantages of using tartaric acid instead of nitrite and cooperating with fluorosilicate to accelerate the film-forming speed; organic carboxylate is complexed with metal cations to make The crystal grains are refined, and the phosphating solution sediment is reduced at the same time to ensure the quality of the phosphating film. Coating adhesion; the additive has a wide application range, low cost, convenient use, energy saving and environmental protection, and is beneficial to industrial production.
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Description

technical field

[0001] The invention belongs to the field of industrial phosphating solutions, and in particular relates to a manganese-based phosphating solution additive and a use method thereof. Background technique

[0002] As one of the core technologies of pre-painting treatment, phosphating is widely used in industries such as automobiles, household appliances, machinery, and military industry. The adhesion, corrosion resistance and protective performance of the coating can be significantly improved by adding certain additives to the phosphating solution.

[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 resources . Therefore, the development direction of phosphating technology is mainly to improve quality and reduce ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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