CN110029337B - Treatment method for improving corrosion resistance of iron picture - Google Patents
Treatment method for improving corrosion resistance of iron picture Download PDFInfo
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- CN110029337B CN110029337B CN201910429486.3A CN201910429486A CN110029337B CN 110029337 B CN110029337 B CN 110029337B CN 201910429486 A CN201910429486 A CN 201910429486A CN 110029337 B CN110029337 B CN 110029337B
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- iron picture
- iron
- soaking
- organic phosphonate
- corrosion resistance
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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
- C23C22/40—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 molybdates, tungstates or vanadates
- C23C22/42—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 molybdates, tungstates or vanadates containing also phosphates
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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
- C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/50—Treatment of iron or alloys based thereon
Abstract
The invention provides a treatment method for improving corrosion resistance of an iron picture, which is to passivate the finished iron picture by using organic phosphonate and then treat the iron picture by using urotropine and sodium metavanadate. Compared with the prior art, the application has the advantages that the dosage ratio of the organic phosphonate, the sodium molybdate and the copper sulfate is controlled in the organic phosphonate passivation solution, the synergistic effect is favorably exerted, the organic phosphonate and molybdenum, copper, iron and the like form insoluble chelate to form precipitate on the surface of the iron picture, the iron picture is protected, and the corrosion resistance of the iron picture is improved. And then the urotropine is adsorbed on the surface of the iron picture, so that a protective layer can be further formed on the surface of the iron picture, the iron picture is isolated from contacting with the outside, and the corrosion resistance of the iron picture is improved. Finally, passivating the iron picture through a sodium metavanadate solution, and playing a synergistic effect with the treatment to comprehensively improve the corrosion resistance of the iron picture.
Description
Technical Field
The invention belongs to the field of iron picture manufacturing, and particularly relates to a treatment method for improving corrosion resistance of an iron picture.
Background
The iron picture absorbs the construction method of traditional Chinese picture and the technological techniques of gold and silver jewelry, paper-cut, sculpture, etc., uses low-carbon steel as raw material, uses iron to replace ink, uses hammer to replace pen, and adopts the procedures of drawing, shearing, smashing, burning, waxing, framing, etc. and the processes of "beating living" and "drilling living" to obtain various artistic works of landscape, figures, flowers, insect and fish, fowl, beast, etc. It integrates the techniques of paper-cutting, carving and inlaying into one body, and adopts the Chinese painting and seal method, and combines black and white contrast, true and false, and has another interesting.
Due to defects of metal surface such as inclusion, microcrack, stress, etc., and moisture and active ions (Cl) in atmosphere-、Br-Etc.) can affect or even accelerate the corrosion of the iron picture to different degrees, so that the preservation time of the iron picture is short, the attractiveness of the iron picture is damaged, and the value of the iron picture is seriously affected.
An iron picture surface anticorrosion decoration method and an iron picture with application number 201610834818.2, which are disclosed on 11/1/2017, wherein the disclosed anticorrosion treatment method comprises the following steps: the one-step phosphating treatment-the two-step phosphating treatment is repeated for 3 to 6 times, and the method has more steps and unsatisfactory corrosion resistance. .
Disclosure of Invention
The invention aims to provide a treatment method for improving the corrosion resistance of an iron picture, which is characterized in that the finished iron picture is passivated by using organic phosphonate and then treated by using urotropine and sodium metavanadate, and a protective film is formed on the surface of the iron picture under the synergistic effect of the two treatments, so that the corrosion resistance of the iron picture is effectively improved.
The specific technical scheme of the invention is as follows:
a treatment method for improving the corrosion resistance of an iron picture comprises the following steps:
1) degreasing the finished iron picture, washing with water, and naturally drying;
2) soaking the iron picture processed in the step 1) in an organic phosphonate passivation solution, taking out the iron picture, and naturally drying the iron picture;
3) placing the iron picture processed in the step 2) into a urotropine solution, soaking, taking out, and naturally drying to obtain the iron picture;
4) and putting the iron picture processed in the step 2) into a sodium metavanadate solution, soaking, taking out, and naturally drying.
The degreasing and the water washing in the step 1) are the prior art and aim to remove oil stains and impurities on the surface of the iron picture.
The preparation method of the organic phosphonate passivation solution in the step 2) comprises the following steps: adding organic phosphonate, sodium molybdate and copper sulfate into water, and stirring and mixing to obtain the organic phosphonate.
The concentration of the organic phosphonate in the step 2) is 20-40 mg/L; the organic phosphonate is selected from hydroxyethylidene diphosphonic acid or diethylenetriamine pentamethylene phosphonic acid.
The concentration of the sodium molybdate in the step 2) is 60-100 mg/L.
The concentration of the copper sulfate in the step 2) is 5-20 mg/L.
The soaking in the step 2) refers to soaking for 10-25s at the temperature of 15-25 ℃.
In the step 3), the mass concentration of the urotropine solution is 0.6-0.7%;
the soaking in the step 3) refers to soaking the iron picture in a urotropine solution at the temperature of 30-40 ℃ for 5-10 s.
The mass concentration of the sodium metavanadate solution in the step 4) is 0.3-0.4%.
The soaking in the step 4) refers to soaking the iron picture in a sodium metavanadate solution at the temperature of 25-35 ℃ for 5-15 s.
And 4) spraying paint on the iron picture processed in the step 4) according to the color requirement.
Compared with the prior art, the application has the advantages that the dosage ratio of the organic phosphonate, the sodium molybdate and the copper sulfate is controlled in the organic phosphonate passivation solution, the synergistic effect is favorably exerted, the organic phosphonate and molybdenum, copper, iron and the like form insoluble chelate to form precipitate on the surface of the iron picture, the iron picture is protected, and the corrosion resistance of the iron picture is improved. And then the urotropine is adsorbed on the surface of the iron picture, so that a protective layer can be further formed on the surface of the iron picture, the iron picture is isolated from contacting with the outside, and the corrosion resistance of the iron picture is improved. Finally, passivating the iron picture through a sodium metavanadate solution, and playing a synergistic effect with the treatment to comprehensively improve the corrosion resistance of the iron picture.
Detailed Description
Example 1
A treatment method for improving the corrosion resistance of an iron picture comprises the following steps:
1) degreasing the finished iron picture, washing with water, and naturally drying;
2) placing the iron picture processed in the step 1) in an organic phosphonate passivation solution, soaking for 20s at the temperature of 20 ℃, taking out, and naturally drying;
the preparation method of the organic phosphonate passivation solution comprises the following steps: adding hydroxyethylidene diphosphonic acid, sodium molybdate and copper sulfate into water, and stirring and mixing to obtain the product; wherein the concentration of the organic phosphonate is 25 mg/L; the concentration of sodium molybdate is 65 mg/L; the copper sulfate concentration was 10 mg/L.
3) Placing the iron picture processed in the step 2) in 0.6 wt% of urotropine solution at 35 ℃, soaking for 10s, taking out, and naturally drying to obtain the iron picture;
4) and putting the iron picture processed in the step 3) into 0.35 wt% of 25 ℃ sodium metavanadate solution, soaking for 5s, taking out, and naturally drying to obtain the iron picture.
Comparative example 1
A treatment method for improving the corrosion resistance of an iron picture comprises the following steps:
1) degreasing the finished iron picture, washing with water, and naturally drying;
2) and (2) placing the iron picture processed in the step 1) into an organic phosphonate passivation solution, soaking for 20s at the temperature of 20 ℃, taking out, and naturally airing to obtain the iron picture.
The preparation method of the organic phosphonate passivation solution comprises the following steps: adding hydroxyethylidene diphosphonic acid, sodium molybdate and copper sulfate into water, and stirring and mixing to obtain the product; wherein the concentration of the organic phosphonate is 25 mg/L; the concentration of sodium molybdate is 65 mg/L; the copper sulfate concentration was 10 mg/L.
Example 2
A treatment method for improving the corrosion resistance of an iron picture comprises the following steps:
1) degreasing the finished iron picture, washing with water, and naturally drying;
2) placing the iron picture processed in the step 1) in an organic phosphonate passivation solution, soaking for 18s at 25 ℃, taking out, and naturally drying;
the preparation method of the organic phosphonate passivation solution comprises the following steps: adding diethylenetriamine pentamethylene phosphonic acid, sodium molybdate and copper sulfate into water, and stirring and mixing to obtain the composition; wherein the concentration of the organic phosphonate is 35 mg/L; the concentration of sodium molybdate is 90 mg/L; the copper sulfate concentration was 15 mg/L.
3) Placing the iron picture processed in the step 2) in 0.7 wt% of urotropine solution at 40 ℃, soaking for 5s, taking out, and naturally drying to obtain the iron picture;
4) and putting the iron picture processed in the step 3) into 0.4 wt% of 30 ℃ sodium metavanadate solution, soaking for 5s, taking out, and naturally drying to obtain the iron picture.
Comparative example 2
A treatment method for improving the corrosion resistance of an iron picture comprises the following steps:
1) degreasing the finished iron picture, washing with water, and naturally drying;
2) placing the iron picture processed in the step 1) in an organic phosphonate passivation solution, soaking for 18s at 25 ℃, taking out, and naturally drying;
the preparation method of the organic phosphonate passivation solution comprises the following steps: adding diethylenetriamine pentamethylene phosphonic acid, sodium molybdate and copper sulfate into water, and stirring and mixing to obtain the composition; wherein the concentration of the organic phosphonate is 35 mg/L; the concentration of sodium molybdate is 90 mg/L; the copper sulfate concentration was 15 mg/L.
3) And 2) placing the iron picture processed in the step 2) into a 0.7 wt% urotropine solution at 40 ℃, soaking for 5s, taking out, and naturally drying to obtain the iron picture.
Comparative example 3
A treatment method for improving the corrosion resistance of an iron picture comprises the following steps:
1) degreasing the finished iron picture, washing with water, and naturally drying;
2) placing the iron picture processed in the step 1) in an organic phosphonate passivation solution, soaking for 18s at 25 ℃, taking out, and naturally drying;
the preparation method of the organic phosphonate passivation solution comprises the following steps: adding diethylenetriamine pentamethylene phosphonic acid, sodium molybdate and copper sulfate into water, and stirring and mixing to obtain the composition; wherein the concentration of the organic phosphonate is 35 mg/L; the concentration of sodium molybdate is 90 mg/L; the copper sulfate concentration was 15 mg/L.
3) And 2) placing the iron picture processed in the step 2) into 0.4 wt% of 30 ℃ sodium metavanadate solution, soaking for 5s, taking out, and naturally drying to obtain the iron picture.
Comparative example 4
And (3) degreasing the finished iron picture, washing with water, and naturally drying.
And (3) corrosion resistance result testing:
the iron paintings prepared in examples 1 to 2 and comparative examples 1 to 4 were immersed in a sodium chloride solution having a mass concentration of 5%, respectively, and the time at which rust spots started to appear was compared. The results were: example 1 rust spots began to appear at 221 th hour; example 2 rust stains began to appear at 198 h. Comparative example 1 rust started to appear at hour 36; comparative example 2 rust occurred at hour 61; rust stains appeared at the 46 th hour of comparative example 3, and rust stains appeared at the 15 th hour of comparative example 4. This application is handled through the solution that passes through organic phosphonate passivation solution, urotropine solution and sodium metavanadate in proper order, has the synergism, has improved the corrosion resistance of iron picture greatly.
Claims (3)
1. The treatment method for improving the corrosion resistance of the iron picture is characterized by comprising the following steps of:
1) degreasing the finished iron picture, washing with water, and naturally drying;
2) soaking the iron picture processed in the step 1) in an organic phosphonate passivation solution, taking out the iron picture, and naturally drying the iron picture;
3) placing the iron picture processed in the step 2) into a urotropine solution, soaking, taking out, and naturally drying to obtain the iron picture;
4) placing the iron picture processed in the step 3) in a sodium metavanadate solution, taking out the iron picture after soaking, and naturally drying the iron picture;
the preparation method of the organic phosphonate passivation solution in the step 2) comprises the following steps: adding organic phosphonate, sodium molybdate and copper sulfate into water, and stirring and mixing to obtain the water-soluble organic phosphonate;
the concentration of the organic phosphonate in the step 2) is 20-40 mg/L; the concentration of the sodium molybdate is 60-100 mg/L; the concentration of the copper sulfate is 5-20 mg/L;
the soaking in the step 2) refers to soaking for 10-25s at the temperature of 15-25 ℃;
in the step 3), the mass concentration of the urotropine solution is 0.6-0.7%;
the soaking in the step 3) refers to soaking the iron picture in a urotropine solution at the temperature of 30-40 ℃ for 5-10 s.
2. The treatment method according to claim 1, wherein the mass concentration of the sodium metavanadate solution in the step 4) is 0.3-0.4%.
3. The treatment method according to claim 1, wherein the soaking in step 4) is performed by soaking the iron picture in a sodium metavanadate solution at 25-35 ℃ for 5-15 s.
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| CN201910429486.3A CN110029337B (en) | 2019-05-22 | 2019-05-22 | Treatment method for improving corrosion resistance of iron picture |
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| CN201910429486.3A CN110029337B (en) | 2019-05-22 | 2019-05-22 | Treatment method for improving corrosion resistance of iron picture |
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| CN110029337B true CN110029337B (en) | 2021-07-30 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638780A (en) * | 2008-07-28 | 2010-02-03 | 比亚迪股份有限公司 | Magnesium alloy phosphorization solution and magnesium alloy surface treatment method |
| CN102451598A (en) * | 2010-10-27 | 2012-05-16 | 中国石油化工股份有限公司 | Composite corrosion inhibitor for carbon dioxide removing system and application thereof |
| CN104651846A (en) * | 2015-03-17 | 2015-05-27 | 厦门建霖工业有限公司 | Corrosion inhibitor and using method thereof |
| CN107217248A (en) * | 2017-08-09 | 2017-09-29 | 广东尔航实业有限公司 | Passivation for stainless steel liquid and its passivation new technology |
-
2019
- 2019-05-22 CN CN201910429486.3A patent/CN110029337B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638780A (en) * | 2008-07-28 | 2010-02-03 | 比亚迪股份有限公司 | Magnesium alloy phosphorization solution and magnesium alloy surface treatment method |
| CN102451598A (en) * | 2010-10-27 | 2012-05-16 | 中国石油化工股份有限公司 | Composite corrosion inhibitor for carbon dioxide removing system and application thereof |
| CN104651846A (en) * | 2015-03-17 | 2015-05-27 | 厦门建霖工业有限公司 | Corrosion inhibitor and using method thereof |
| CN107217248A (en) * | 2017-08-09 | 2017-09-29 | 广东尔航实业有限公司 | Passivation for stainless steel liquid and its passivation new technology |
Non-Patent Citations (1)
| Title |
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| 钢铁表面的A T M P 钝化处理;方景礼等;《表面技术》;19911231;第20卷(第4期);第12-13页 * |
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