CN107502881A - A kind of environment-friendly type acid-washing stainless steel passivating solution and preparation method thereof - Google Patents
A kind of environment-friendly type acid-washing stainless steel passivating solution and preparation method thereof Download PDFInfo
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- CN107502881A CN107502881A CN201710654808.5A CN201710654808A CN107502881A CN 107502881 A CN107502881 A CN 107502881A CN 201710654808 A CN201710654808 A CN 201710654808A CN 107502881 A CN107502881 A CN 107502881A
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- parts
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- passivator
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/24—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
- C23C22/33—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds containing also phosphates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
- C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
- C23G1/065—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors sulfur-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
Abstract
The invention discloses a kind of environment-friendly type acid-washing stainless steel passivating solution, including corrosion inhibiter and passivator, the formula of the corrosion inhibiter are as follows：1 ~ 2 part of malic acid, 5 ~ 6 parts of citric acid, 1 ~ 3 part of tartaric acid, 0.5 ~ 1 part of dipotassium hydrogen phosphate, 0.1 ~ 0.3 part of potassium dihydrogen phosphate, 1 ~ 3 part of methenamine, 0.5 ~ 1 part of thiocarbamide, 1 ~ 2 part of aniline, 1 ~ 2 part of glycerine, 2 ~ 3 parts of water；The formula of the passivator is as follows：1 ~ 3 part of imidazoline, 0.1 ~ 0.5 part of sodium carbonate, 1 ~ 2 part of potassium bichromate, 1 ~ 2 part of zinc nitrate, 0.1 ~ 0.3 part of barium sulfate, 0.1 ~ 0.5 part of EDTA, 3 ~ 5 parts of water.Both are mixed during the acid-washing stainless steel passivating solution use, the passivating solution has nontoxic, environmentally friendly, the advantage such as good passivation effect.
Description
Technical field
The invention belongs to stainless steel manufacturing technology field, and in particular to a kind of environment-friendly type acid-washing stainless steel passivating solution and its system
Preparation Method.
Background technology
Stainless steel has the characteristic such as good corrosion-resistant, high temperature resistant, low temperature resistant, wear-resistant exquisite appearance, and purposes is very extensive,
It is the important ferrous materials of the economic all departments' development of allergy.Stainless steel material aerospace, atomic energy, ocean development, petrochemical industry,
The industries such as automobile, building decoration, household electrical appliance, kitchen utensil are widely used.
Stainless steel can cause surface defect in process, Corrosion Potential, black oxidation skin and other metallization occur
Grease when compound, yellow weld seam and cold-drawn etc., in order to improve the outward appearance of stainless steel and corrosion resistance, the stainless steel after processing is necessary
Carry out acid wash passivation processing.The surface after processing is set to form one layer of passivating film using chromium as main matter, prevention and other materials
Reaction, reaches passivation purpose, is allowed to bright pure white so as to improve the surface anticorrosion quality of stainless steel products, extension device uses the longevity
Life.Acid-washing stainless steel is usually to be handled using acid wash passivation cream and acid wash passivation liquid.
Acid wash passivation liquid of the prior art has strong impulse smell, is unfavorable for the health of worker, to ring
There is destruction in border, therefore needs badly and provide a kind of environmentally friendly, nontoxic acid-washing stainless steel passivating solution.
The content of the invention
Technical problem：A kind of environmentally friendly, nontoxic acid-washing stainless steel passivating solution and preparation method thereof is provided.
Technical scheme：A kind of environment-friendly type acid-washing stainless steel passivating solution, including corrosion inhibiter and passivator, the corrosion inhibiter are matched somebody with somebody
Side is as follows：1 ~ 2 part of malic acid, 5 ~ 6 parts of citric acid, 1 ~ 3 part of tartaric acid, 0.5 ~ 1 part of dipotassium hydrogen phosphate, potassium dihydrogen phosphate 0.1 ~
0.3 part, 1 ~ 3 part of methenamine, 0.5 ~ 1 part of thiocarbamide, 1 ~ 2 part of aniline, 1 ~ 2 part of glycerine, 2 ~ 3 parts of water；
The formula of the passivator is as follows：1 ~ 3 part of quaternary ammonium salt cationic imidazoline surfactant, 0.1 ~ 0.5 part of sodium carbonate,
1 ~ 2 part of potassium bichromate, 1 ~ 2 part of zinc nitrate, 0.1 ~ 0.3 part of barium sulfate, 0.1 ~ 0.5 part of EDTA, 3 ~ 5 parts of water.
Quaternary ammonium salt cationic imidazoline surfactant is a kind of new surfactant, is favorably improved passivating solution
Surface tension, improve passivation effect.EDTA helps to strengthen the stability of passivator, reduces the precipitation of passivator.
Malic acid, citric acid belong to weak acid in corrosion inhibiter, relative to traditional HNO3, HF have environmental protection, protection operation
Health of person etc. acts on.
Preferably, the formula of the corrosion inhibiter is as follows：1 part of malic acid, 5 parts of citric acid, 2 parts of tartaric acid, phosphoric acid hydrogen two
0.8 part of potassium, 0.2 part of potassium dihydrogen phosphate, 2 parts of methenamine, 0.8 part of thiocarbamide, 1.5 parts of aniline, 1 part of glycerine, 2 parts of water；
The formula of the passivator is as follows：2 parts of quaternary ammonium salt cationic imidazoline surfactant, 0.3 part of sodium carbonate, dichromic acid
1.5 parts of potassium, 1.8 parts of zinc nitrate, 0.2 part of barium sulfate, 0.2 part of EDTA, 3 parts of water.
Preferably, the formula of the corrosion inhibiter is as follows：2 parts of malic acid, 6 parts of citric acid, 3 parts of tartaric acid, phosphoric acid hydrogen two
1 part of potassium, 0.3 part of potassium dihydrogen phosphate, 2 parts of methenamine, 1 part of thiocarbamide, 2 parts of aniline, 2 parts of glycerine, 3 parts of water；
The formula of the passivator is as follows：3 parts of quaternary ammonium salt cationic imidazoline surfactant, 0.5 part of sodium carbonate, dichromic acid
2 parts of potassium, 2 parts of zinc nitrate, 0.3 part of barium sulfate, 0.5 part of EDTA, 5 parts of water.
The preparation method of above-mentioned environment-friendly type acid-washing stainless steel passivating solution, it is characterised in that the preparation method of corrosion inhibiter is as follows：
Malic acid, citric acid, tartaric acid, dipotassium hydrogen phosphate, potassium dihydrogen phosphate are proportionally added into water and glycerine in mass ratio
Mixture in, be warming up to 20 ~ 30 DEG C, sequentially add methenamine, thiocarbamide, aniline, water, be uniformly mixed；
The preparation method of the passivator is as follows：In mass ratio by quaternary ammonium salt cationic imidazoline surfactant, sodium carbonate,
Potassium bichromate, zinc nitrate, barium sulfate, EDTA are added to the water, and are uniformly mixed.
Beneficial effect：
The invention provides a kind of environment-friendly type acid-washing stainless steel passivating solution, the passivating solution is divided into corrosion inhibiter and passivator, during use
Both are mixed, the passivating solution has nontoxic, environmentally friendly, the advantage such as good passivation effect.
Embodiment
According to following embodiments, the present invention may be better understood.It is however, as it will be easily appreciated by one skilled in the art that real
Apply the content described by example and be merely to illustrate the present invention, without should be also without limitation on sheet described in detail in claims
Invention.
Embodiment 1：
The formula of corrosion inhibiter is as follows：1 part of malic acid, 5 parts of citric acid, 2 parts of tartaric acid, 0.8 part of dipotassium hydrogen phosphate, potassium dihydrogen phosphate
0.2 part, 2 parts of methenamine, 0.8 part of thiocarbamide, 1.5 parts of aniline, 1 part of glycerine, 2 parts of water；
The formula of passivator is as follows：2 parts of quaternary ammonium salt cationic imidazoline surfactant, 0.3 part of sodium carbonate, potassium bichromate
1.5 parts, 1.8 parts of zinc nitrate, 0.2 part of barium sulfate, 0.2 part of EDTA, 3 parts of water.
By corrosion inhibiter and passivator according to 1:1 ratio mixing, had both obtained environment-friendly type acid-washing stainless steel of the present invention
Passivating solution.
Embodiment 2：
The formula of corrosion inhibiter is as follows：2 parts of malic acid, 6 parts of citric acid, 3 parts of tartaric acid, 1 part of dipotassium hydrogen phosphate, potassium dihydrogen phosphate
0.3 part, 2 parts of methenamine, 1 part of thiocarbamide, 2 parts of aniline, 2 parts of glycerine, 3 parts of water；
The formula of passivator is as follows：3 parts of quaternary ammonium salt cationic imidazoline surfactant, 0.5 part of sodium carbonate, potassium bichromate 2
Part, 2 parts of zinc nitrate, 0.3 part of barium sulfate, 0.5 part of EDTA, 5 parts of water.
By corrosion inhibiter and passivator according to 1:1 ratio mixing, had both obtained environment-friendly type acid-washing stainless steel of the present invention
Passivating solution.
Embodiment 3：
The proportioning of corrosion inhibiter and passivator is adjusted, is shown in Table 1, the ratio pair of corrosion inhibiter and passivator is detected using national standard experimental method
The influence of film properties is passivated, testing result is shown in Table 2.
The corrosion inhibiter of table 1 and the proportioning of passivation
| Numbering | Corrosion inhibiter | Passivator |
| 1 | 1 | 0.5 |
| 2 | 1 | 1 |
| 3 | 1 | 2 |
| 4 | 1 | 3 |
Passivating film performance comparison under the normal temperature treatment conditions of table 2
From Table 2, it can be seen that the ratio of adjustment corrosion inhibiter and passivator, to the thickness of passivating film, adhesive force, pliability, anti-
The aspect of performances such as rust phase do not influence substantially, but have obvious influence to the thickness of passivating film, and the thickness for increasing passivator can
To improve the thickness of passivating film.
Embodiment 4：The influence of malic acid, citric acid to passivation film properties.
The ratio of malic acid, citric acid in corrosion inhibiter is adjusted, the ratio of remaining component is as follows：3 parts of tartaric acid, phosphoric acid hydrogen
1 part of dipotassium, 0.3 part of potassium dihydrogen phosphate, 2 parts of methenamine, 1 part of thiocarbamide, 2 parts of aniline, 2 parts of glycerine, 3 parts of water
Regulation ratio is as shown in table 3, and testing result is shown in Table 4.
The malic acid of table 3, citric acid mass ratio
| Numbering | Malic acid | Citric acid |
| 5 | 0 | 6 |
| 6 | 2 | 0 |
| 7 | 0 | 0 |
| 8 | 2 | 6 |
The influence of the malic acid of table 4, citric acid to passivation film properties
Embodiment 5：Influence of the quaternary ammonium salt cationic imidazoline surfactant to passivation film properties
Concentration of the quaternary ammonium salt cationic imidazoline surfactant in passivator is adjusted, the content of remaining component is by as follows：
0.5 part of sodium carbonate, 2 parts of potassium bichromate, 2 parts of zinc nitrate, 0.3 part of barium sulfate, 0.5 part of EDTA, 5 parts of water.
The content of the quaternary ammonium salt cationic imidazoline surfactant of table 5
| Numbering | Quaternary ammonium salt cationic imidazoline surfactant |
| 9 | 0 |
| 10 | 1 |
| 11 | 2 |
| 12 | 3 |
Influence of the quaternary ammonium salt cationic imidazoline surfactant of table 6 to passivation film properties
Claims (4)
1. a kind of environment-friendly type acid-washing stainless steel passivating solution, it is characterised in that including corrosion inhibiter and passivator, the corrosion inhibiter is matched somebody with somebody
Side is as follows：1 ~ 2 part of malic acid, 5 ~ 6 parts of citric acid, 1 ~ 3 part of tartaric acid, 0.5 ~ 1 part of dipotassium hydrogen phosphate, potassium dihydrogen phosphate 0.1 ~
0.3 part, 1 ~ 3 part of methenamine, 0.5 ~ 1 part of thiocarbamide, 1 ~ 2 part of aniline, 1 ~ 2 part of glycerine, 2 ~ 3 parts of water；
The formula of the passivator is as follows：1 ~ 3 part of imidazoline, 0.1 ~ 0.5 part of sodium carbonate, 1 ~ 2 part of potassium bichromate, zinc nitrate 1 ~ 2
Part, 0.1 ~ 0.3 part of barium sulfate, 0.1 ~ 0.5 part of EDTA, 3 ~ 5 parts of water.
2. environment-friendly type acid-washing stainless steel passivating solution according to claim 1, it is characterised in that the formula of the corrosion inhibiter is such as
Under：1 part of malic acid, 5 parts of citric acid, 2 parts of tartaric acid, 0.8 part of dipotassium hydrogen phosphate, 0.2 part of potassium dihydrogen phosphate, 2 parts of methenamine,
0.8 part of thiocarbamide, 1.5 parts of aniline, 1 part of glycerine, 2 parts of water；
The formula of the passivator is as follows：2 parts of imidazoline, 0.3 part of sodium carbonate, 1.5 parts of potassium bichromate, 1.8 parts of zinc nitrate, sulfuric acid
0.2 part of barium, 0.2 part of EDTA, 3 parts of water.
3. environment-friendly type acid-washing stainless steel passivating solution according to claim 1, it is characterised in that the formula of the corrosion inhibiter is such as
Under：2 parts of malic acid, 6 parts of citric acid, 3 parts of tartaric acid, 1 part of dipotassium hydrogen phosphate, 0.3 part of potassium dihydrogen phosphate, 2 parts of methenamine, sulphur
1 part of urea, 2 parts of aniline, 2 parts of glycerine, 3 parts of water；
The formula of the passivator is as follows：3 parts of imidazoline, 0.5 part of sodium carbonate, 2 parts of potassium bichromate, 2 parts of zinc nitrate, barium sulfate
0.3 part, 0.5 part of EDTA, 5 parts of water.
4. the preparation method of environment-friendly type acid-washing stainless steel passivating solution described in claim 1, it is characterised in that the preparation side of corrosion inhibiter
Method is as follows：
Malic acid, citric acid, tartaric acid, dipotassium hydrogen phosphate, potassium dihydrogen phosphate are proportionally added into water and glycerine in mass ratio
Mixture in, be warming up to 20 ~ 30 DEG C, sequentially add methenamine, thiocarbamide, aniline, water, be uniformly mixed；
The preparation method of the passivator is as follows：In mass ratio by imidazoline, sodium carbonate, potassium bichromate, zinc nitrate, barium sulfate,
EDTA is added to the water, and is uniformly mixed.
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| CN201710654808.5A CN107502881A (en) | 2017-08-03 | 2017-08-03 | A kind of environment-friendly type acid-washing stainless steel passivating solution and preparation method thereof |
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Citations (6)
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| CN101603178A (en) * | 2009-06-15 | 2009-12-16 | 中冶实久建设有限公司南京分公司 | Four-in-one acid-washing method |
| CN102653868A (en) * | 2012-03-14 | 2012-09-05 | 王福平 | Novel stainless steel acid-washing passivation liquid |
| CN103820774A (en) * | 2014-02-26 | 2014-05-28 | 苏州禾川化学技术服务有限公司 | Stainless steel pickling passivation cream with high transparency and high viscosity and preparation method thereof |
| CN104233257A (en) * | 2013-06-24 | 2014-12-24 | 无锡杨市表面处理科技有限公司 | Passivation solution for blades of steam turbine |
| CN106222675A (en) * | 2016-08-18 | 2016-12-14 | 广州斯特福材料科技有限公司 | A kind of citric acid cleaning passivator and passivating method |
| CN106917095A (en) * | 2017-03-23 | 2017-07-04 | 合肥协耀玻璃制品有限公司 | A kind of acid-washing stainless steel passivation cream and preparation method thereof |
-
2017
- 2017-08-03 CN CN201710654808.5A patent/CN107502881A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603178A (en) * | 2009-06-15 | 2009-12-16 | 中冶实久建设有限公司南京分公司 | Four-in-one acid-washing method |
| CN102653868A (en) * | 2012-03-14 | 2012-09-05 | 王福平 | Novel stainless steel acid-washing passivation liquid |
| CN104233257A (en) * | 2013-06-24 | 2014-12-24 | 无锡杨市表面处理科技有限公司 | Passivation solution for blades of steam turbine |
| CN103820774A (en) * | 2014-02-26 | 2014-05-28 | 苏州禾川化学技术服务有限公司 | Stainless steel pickling passivation cream with high transparency and high viscosity and preparation method thereof |
| CN106222675A (en) * | 2016-08-18 | 2016-12-14 | 广州斯特福材料科技有限公司 | A kind of citric acid cleaning passivator and passivating method |
| CN106917095A (en) * | 2017-03-23 | 2017-07-04 | 合肥协耀玻璃制品有限公司 | A kind of acid-washing stainless steel passivation cream and preparation method thereof |
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