CN104233268A - Preparation method of rustproof treatment solution for steel surface - Google Patents
Preparation method of rustproof treatment solution for steel surface Download PDFInfo
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- CN104233268A CN104233268A CN201310256543.5A CN201310256543A CN104233268A CN 104233268 A CN104233268 A CN 104233268A CN 201310256543 A CN201310256543 A CN 201310256543A CN 104233268 A CN104233268 A CN 104233268A
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Abstract
The invention discloses a preparation method of a rustproof treatment solution for a steel surface. The treatment solution comprises the following components: 6-10g/L of potassium metasilicate, 11-15g/L of sodium silicate, 22-24g/L of sodium nitrate, 7-11g/L of zinc nitrate, 14-18g/L of zinc oxide, 18-22ml/L of sulfuric acid, 23-27mL/L of hydrogen peroxide, 0.8-1.2g/L of triethanolamine and the balance of water. The preparation method comprises the following steps: firstly, preparing zinc oxide into paste by using a proper amount of water, and diluting sulfuric acid by using a proper amount of water; adding the pasty zinc oxide into the diluted sulfuric acid solution; sequentially adding potassium metasilicate, sodium silicate, sodium nitrate, zinc nitrate, hydrogen peroxide and triethanolamine, and then stirring for 4-6 minutes; adding the balance of water, and stirring evenly again; and adjusting the pH value to 2.0-3.0 by using ammonium hydroxide or acetic acid.
Description
Technical field
The present invention relates to technical field of surface, particularly relate to a kind of compound method of steel surface antirust treatment liquid.
Background technology
Most conversion coating treating fluid all contains chromic salt or phosphoric acid salt traditionally; although comparatively satisfied effect can be obtained; but day by day strengthening and transforming the continuous maturation of application of membrane along with countries in the world environmental protection consciousness, traditional industrial technology will progressively replace by environment-friendly type conversion film technology.
Application is the anti-corrosion method of widespread use in metal finishing.Coating Pretreatment is the requisite preliminary processes of application; its effect on protected metal works, sets up one can receive on-metallic protective coating; metal works is made to have good sticking power to paint film; so that the two is more firmly attached on together, thus improve the anti-corrosion capability of coating.Phosphatization is the mature technology extensively adopted in pre-treating technology.Experienced by the exploitation of 140 years, phosphorization technology is constantly perfect.After World War II terminates, phosphorization technology obtains important improvement in low temperature, controlling diaphragm weight, high-speed and continuous etc., is widely used in anticorrosive technique and metal cold deformation processing industry.
At present, at paint industry, the application of metal products especially sheet material, adopts phosphating process to control corrosion of metal usually.But there is a lot of problem in this technique, as: Phosphating Solution use temperature need reach 50 ~ 60 DEG C, and steam consumption quantity is large, and energy consumption is high; Generate a large amount of sediment in parkerizing process, the generation of sediment is unfavorable to bonderizing, has both wasted pharmaceutical chemicals and has turn increased the workload removing waste residue, as dealt with the quality that also can affect phosphatize phosphate coat improperly; Complex procedures, production continuity is poor.Meanwhile, need in scale removal process to use a large amount of strong acid and highly basic, increase the exposure hazard of workman, and increase disposal of pollutants load.
In order to contaminated solution problem, phosphatization substitute technology is arisen at the historic moment.In the twentieth century later stage, the U.S., Europe and Japanese appropriate authority develop without phosphorus substitute products in succession.Phosphatization substitute products are mainly divided into zirconium system and silane system two class in the market.Wherein zirconium system treatment agent is with the BonderiteNT-1 type nano ceramics treatment agent of Henkel KGaA (Henkel) company for representative, mainly substitutes traditional ferric solid-acid and Zinc phosphating.Zirconium system treatment agent not only has the advantage that the phosphorization technologies such as environmental protection, energy-conservation, easy and simple to handle, cost is low can not be substituted, and very easily supporting with follow-up various processing mode, such as dusts, electrophoresis, to spray paint, can process the multiple base material on a workpiece simultaneously.2005 start, and Henkel is proposed zirconium system metallic substance nano ceramics pretreatment liquid.It makes substrate surface generate a kind of ceramic-like conversion film of Nano grade, traditional ferric solid-acid is all surpassed in antirust ability and application bonding force, part index number can reach the standard of Zinc phosphating, all has advantage in security, the feature of environmental protection, handling and running cost etc.But, current most zirconium systems treatment agent has stricter requirement to workpiece material and water quality, exist the process of part cold-reduced sheet and return rust phenomenon, cause the salt-fog test of workpiece can not be up to standard, and the tank liquor usage period is short, make tank liquor renewal frequency large, cause process costs to increase, thus it is applied and is subject to a definite limitation.Seminar of Dalian Polytechnic University also have developed the application of such technology on zinc-plated sheet material, sees 200710010966.3.The present invention makes improvements for cold-rolled steel sheet and optimizes.
Summary of the invention
The object of the invention is to the compound method proposing a kind of steel surface antirust treatment liquid, without phosphorus, the Chrome-free for the treatment of solution of the method preparation, can rustless property be significantly improved and there is excellent long-term suppression and occur rust staining, particularly suppress the effect of raw red rust.
For reaching this object, the present invention by the following technical solutions:
A kind of compound method of steel surface antirust treatment liquid, consisting of of this treatment solution: potassium silicate 6-10g/L, water glass 11-15g/L, SODIUMNITRATE 22-24g/L, zinc nitrate 7-11g/L, zinc oxide 14-18g/L, sulfuric acid 18-22ml/L, hydrogen peroxide 23-27mL/L, trolamine 0.8-1.2g/L, all the other are water; Described compound method is: first by the appropriate water furnishing pasty state of zinc oxide, with appropriate water, sulfuric acid is diluted, again the zinc oxide of pasty state is added in the sulphuric acid soln after dilution, then potassium silicate, water glass, SODIUMNITRATE, zinc nitrate, hydrogen peroxide and trolamine is added successively, all add rear stirring 4-6 minute, being added by the water of surplus, again stir, is then 2.0-3.0 by ammoniacal liquor or acetic acid adjust ph.
Beneficial effect of the present invention is:
Adopt treatment solution of the present invention to process iron and steel parts, the solidity to corrosion of iron and steel parts can be significantly improved, make salt-fog test go out the red rust time and can reach 100-120 hour, far above national standard.Due to chromium, phosphoric acid salt in rust protection liquid, thus the treatment solution environmental protection of preparation, and wherein not baric even containing sulfonate overcome barium salt processing technique toxicity greatly, the shortcoming such as not environmentally, the cleaner production of iron and steel parts postprocessing working procedures can be realized; Meanwhile, cheap silicate makes again antirust cost greatly reduce.This process stabilizing is reliable, and the product performance of producing are excellent, production cost is low, have very important social effect and using value.
Embodiment
Embodiment one
A compound method for steel surface antirust treatment liquid, consisting of of this treatment solution: potassium silicate 6g/L, water glass 15g/L, SODIUMNITRATE 22g/L, zinc nitrate 11g/L, zinc oxide 14g/L, sulfuric acid 22ml/L, hydrogen peroxide 23mL/L, trolamine 1.2g/L, all the other are water; Described compound method is: first by the appropriate water furnishing pasty state of zinc oxide, with appropriate water, sulfuric acid is diluted, again the zinc oxide of pasty state is added in the sulphuric acid soln after dilution, then potassium silicate, water glass, SODIUMNITRATE, zinc nitrate, hydrogen peroxide and trolamine is added successively, all add rear stirring 4 minutes, being added by the water of surplus, again stir, is then 2.0-3.0 by ammoniacal liquor or acetic acid adjust ph.
Embodiment two
A compound method for steel surface antirust treatment liquid, consisting of of this treatment solution: potassium silicate 10g/L, water glass 11g/L, SODIUMNITRATE 24g/L, zinc nitrate 7g/L, zinc oxide 18g/L, sulfuric acid 18ml/L, hydrogen peroxide 27mL/L, trolamine 0.8g/L, all the other are water; Described compound method is: first by the appropriate water furnishing pasty state of zinc oxide, with appropriate water, sulfuric acid is diluted, again the zinc oxide of pasty state is added in the sulphuric acid soln after dilution, then potassium silicate, water glass, SODIUMNITRATE, zinc nitrate, hydrogen peroxide and trolamine is added successively, all add rear stirring 6 minutes, being added by the water of surplus, again stir, is then 2.0-3.0 by ammoniacal liquor or acetic acid adjust ph.
Embodiment three
A compound method for steel surface antirust treatment liquid, consisting of of this treatment solution: potassium silicate 8g/L, water glass 13g/L, SODIUMNITRATE 23g/L, zinc nitrate 9g/L, zinc oxide 16g/L, sulfuric acid 20ml/L, hydrogen peroxide 25mL/L, trolamine 1.0g/L, all the other are water; Described compound method is: first by the appropriate water furnishing pasty state of zinc oxide, with appropriate water, sulfuric acid is diluted, again the zinc oxide of pasty state is added in the sulphuric acid soln after dilution, then potassium silicate, water glass, SODIUMNITRATE, zinc nitrate, hydrogen peroxide and trolamine is added successively, all add rear stirring 5 minutes, being added by the water of surplus, again stir, is then 2.0-3.0 by ammoniacal liquor or acetic acid adjust ph.
Claims (1)
1. the compound method of a steel surface antirust treatment liquid, it is characterized in that, consisting of of this treatment solution: potassium silicate 6-10g/L, water glass 11-15g/L, SODIUMNITRATE 22-24g/L, zinc nitrate 7-11g/L, zinc oxide 14-18g/L, sulfuric acid 18-22ml/L, hydrogen peroxide 23-27mL/L, trolamine 0.8-1.2g/L, all the other are water; Described compound method is: first by the appropriate water furnishing pasty state of zinc oxide, with appropriate water, sulfuric acid is diluted, again the zinc oxide of pasty state is added in the sulphuric acid soln after dilution, then potassium silicate, water glass, SODIUMNITRATE, zinc nitrate, hydrogen peroxide and trolamine is added successively, all add rear stirring 4-6 minute, being added by the water of surplus, again stir, is then 2.0-3.0 by ammoniacal liquor or acetic acid adjust ph.
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| CN201310256543.5A CN104233268A (en) | 2013-06-24 | 2013-06-24 | Preparation method of rustproof treatment solution for steel surface |
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| CN201310256543.5A CN104233268A (en) | 2013-06-24 | 2013-06-24 | Preparation method of rustproof treatment solution for steel surface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106981846A (en) * | 2017-04-28 | 2017-07-25 | 广西欧讯科技服务有限责任公司 | A kind of ship rust-proof cable bracket |
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2013
- 2013-06-24 CN CN201310256543.5A patent/CN104233268A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106981846A (en) * | 2017-04-28 | 2017-07-25 | 广西欧讯科技服务有限责任公司 | A kind of ship rust-proof cable bracket |
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Application publication date: 20141224 |