CN107502904B - Environment-friendly pickling solution applied to stainless steel - Google Patents
Environment-friendly pickling solution applied to stainless steel Download PDFInfo
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- CN107502904B CN107502904B CN201710852873.9A CN201710852873A CN107502904B CN 107502904 B CN107502904 B CN 107502904B CN 201710852873 A CN201710852873 A CN 201710852873A CN 107502904 B CN107502904 B CN 107502904B
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- pickling solution
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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
- 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
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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
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
Abstract
The invention discloses an environment-friendly pickling solution applied to stainless steel, which comprises the following components: inorganic strong acid, phosphoric acid, oleic acid, polyethylene glycol, a surfactant, a gibberellic acid salt, tricarboxylic acid, sorbitan monostearate, N-dimethylformamide and water. Polyethylene glycol is added as a corrosion inhibitor, so that the corrosion inhibition effect of the treated stainless steel surface can be enhanced; the hematite is added as a precipitator, so that the concentration of iron ions in the pickling solution can be reduced, the service life of the pickling solution is prolonged, the repeated utilization rate of the pickling solution is improved, the environmental pollution is reduced, and the cost is reduced; the added organic acid carboxylic acid, sorbitan monostearate and N, N-dimethylformamide can be used as an acid mist inhibitor to prevent the generation of smoke, and can improve the formation of a compact protective film on the surface of the stainless steel to further improve the corrosion inhibition effect of the surface of the stainless steel.
Description
Technical Field
The invention relates to the technical field of pickling solutions, and in particular relates to an environment-friendly pickling solution applied to stainless steel.
Background
The pickling solution is mainly used for pickling and brightening stainless steel, aluminum and steel pieces which are all subjected to metal pickling, has the effects of removing oil, removing rust, brightening, passivating and preventing rust, inhibiting fog and the like, is particularly suitable for stainless steel cold rolling assembly line operation, greatly shortens the cleaning time, inhibits the generation of smog, greatly improves the production environment and greatly reduces the corrosion speed of metal.
However, the traditional pickling solution mainly has the defects of high acid content, poor recycling effect and the like, and in order to reduce environmental pollution and improve the recycling rate of the pickling solution, the invention provides the environment-friendly pickling solution applied to stainless steel.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides an environment-friendly pickling solution applied to stainless steel.
An environment-friendly pickling solution applied to stainless steel comprises the following components: inorganic strong acid, phosphoric acid, oleic acid, polyethylene glycol, a surfactant, a gibberellic acid salt, tricarboxylic acid, sorbitan monostearate, N-dimethylformamide and water.
An environment-friendly pickling solution applied to stainless steel comprises the following components in percentage by weight: 40-55% of inorganic strong acid, 8-15% of phosphoric acid, 2-8% of oleic acid, 1-3% of polyethylene glycol, 2-5% of surfactant, 0.5-1% of hematite, 2-4% of tricarboxylic acid, 0.5-2% of sorbitan monostearate, 1-3% of N, N-dimethylformamide and the balance of water.
Preferably, the inorganic acid is any one or combination of more of hydrochloric acid, nitric acid and sulfuric acid.
Preferably, the surfactant is a nonionic surfactant, and more preferably fatty alcohol-polyoxyethylene ether.
The use method of the pickling solution comprises the following steps: immersing the stainless steel in the pickling solution for 15-30min at 40-55 ℃.
The invention has the advantages that: the invention relates to an environment-friendly pickling solution applied to stainless steel, which comprises the following components: inorganic strong acid, phosphoric acid, oleic acid, polyethylene glycol, a surfactant, a gibberellic acid salt, tricarboxylic acid, sorbitan monostearate, N-dimethylformamide and water. The corrosion inhibitor comprises the main components of inorganic strong acid, phosphoric acid and oleic acid, and polyethylene glycol is added as a corrosion inhibitor, so that the corrosion inhibition effect of the treated stainless steel surface can be enhanced; the hematite is added as a precipitator, so that the concentration of iron ions in the pickling solution can be reduced, the service life of the pickling solution is prolonged, the repeated utilization rate of the pickling solution is improved, the environmental pollution is reduced, and the cost is reduced; the added organic acid carboxylic acid, sorbitan monostearate and N, N-dimethylformamide can be used as an acid mist inhibitor to prevent the generation of smoke, and can improve the formation of a compact protective film on the surface of the stainless steel to further improve the corrosion inhibition effect of the surface of the stainless steel.
Detailed Description
Example 1
An environment-friendly pickling solution applied to stainless steel comprises the following components in percentage by weight: 51% of inorganic strong acid, 13% of phosphoric acid, 5% of oleic acid, 2.5% of polyethylene glycol, 4% of surfactant, 0.7% of sodium erythorbate, 3% of tricarboxylic acid, 1.8% of sorbitan monostearate, 1.5% of N, N-dimethylformamide and the balance of water.
The inorganic acid is hydrochloric acid.
The surfactant is fatty alcohol-polyoxyethylene ether.
The use method of the pickling solution comprises the following steps: and immersing the stainless steel in the pickling solution for 18min at 48 ℃.
Example 2
An environment-friendly pickling solution applied to stainless steel comprises the following components in percentage by weight: 40% of inorganic strong acid, 15% of phosphoric acid, 2% of oleic acid, 3% of polyethylene glycol, 2% of surfactant, 1% of potassium hematite, 2% of ternary polycarboxylic acid, 2% of sorbitan monostearate, 1% of N, N-dimethylformamide and the balance of water.
The inorganic acid is 1: 1 molar ratio of the mixture.
The surfactant is fatty alcohol-polyoxyethylene ether.
The use method of the pickling solution comprises the following steps: and immersing the stainless steel in the pickling solution for 20min at 40 ℃.
Example 3
An environment-friendly pickling solution applied to stainless steel comprises the following components in percentage by weight: 55% of inorganic strong acid, 8% of phosphoric acid, 8% of oleic acid, 1% of polyethylene glycol, 5% of surfactant, 0.5% of potassium erythronate, 4% of tricarboxylic acid, 0.5% of sorbitan monostearate, 3% of N, N-dimethylformamide and the balance of water.
The inorganic acid is sulfuric acid.
The surfactant is alkylphenol polyoxyethylene.
The use method of the pickling solution comprises the following steps: and immersing the stainless steel in the pickling solution for 15min at the temperature of 55 ℃.
Comparative example 1
The removal of N, N-dimethylformamide in example 1 revealed that a small amount of fumes were generated during the pickling treatment, and the corrosion resistance of the treated stainless steel was also somewhat reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The environment-friendly pickling solution applied to stainless steel is characterized by comprising the following components in percentage by weight: 40-55% of inorganic strong acid, 8-15% of phosphoric acid, 2-8% of oleic acid, 1-3% of polyethylene glycol, 2-5% of surfactant, 0.5-1% of hematite, 2-4% of tricarboxylic acid, 0.5-2% of sorbitan monostearate, 1-3% of N, N-dimethylformamide and the balance of water.
2. The environment-friendly pickling solution applied to stainless steel according to claim 1, which comprises the following components in percentage by weight: 51% of inorganic strong acid, 13% of phosphoric acid, 5% of oleic acid, 2.5% of polyethylene glycol, 4% of surfactant, 0.7% of erythorbate, 3% of tricarboxylic acid, 1.8% of sorbitan monostearate, 1.5% of N, N-dimethylformamide and the balance of water.
3. The environment-friendly pickling solution applied to stainless steel according to any one of claims 1 to 2, wherein the inorganic acid is any one or a combination of hydrochloric acid, nitric acid and sulfuric acid.
4. The environment-friendly pickling solution applied to stainless steel according to any one of claims 1 to 2, wherein the surfactant is a nonionic surfactant.
5. The environment-friendly pickling solution applied to stainless steel according to any one of claims 1 to 2, wherein the surfactant is fatty alcohol-polyoxyethylene ether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710852873.9A CN107502904B (en) | 2017-09-20 | 2017-09-20 | Environment-friendly pickling solution applied to stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710852873.9A CN107502904B (en) | 2017-09-20 | 2017-09-20 | Environment-friendly pickling solution applied to stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107502904A CN107502904A (en) | 2017-12-22 |
| CN107502904B true CN107502904B (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710852873.9A Active CN107502904B (en) | 2017-09-20 | 2017-09-20 | Environment-friendly pickling solution applied to stainless steel |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113981451A (en) * | 2021-08-13 | 2022-01-28 | 北京市古代建筑研究所 | Pre-filming corrosion inhibitor for iron cultural relics, and pre-filming and evaluation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243340A (en) * | 2013-05-08 | 2013-08-14 | 张文卓 | Stainless steel environment-friendly pickling solution |
| CN104532269A (en) * | 2014-11-28 | 2015-04-22 | 上海邦中高分子材料有限公司 | Safe and environmental-protection stainless steel pickling solution |
| CN104611711A (en) * | 2015-01-23 | 2015-05-13 | 邢台钢铁有限责任公司 | Pickling solution for high-alloy corrosion-resisting steel and pickling method |
| CN104611712A (en) * | 2015-01-19 | 2015-05-13 | 邢台钢铁有限责任公司 | Hydrochloric-acid acid washing liquid and acid washing method for 400-series stainless steel hot-rolled annealing wire |
| CN106947978A (en) * | 2017-02-09 | 2017-07-14 | 赵正芳 | New type stainless steel. corrosion resistance pickle |
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2017
- 2017-09-20 CN CN201710852873.9A patent/CN107502904B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243340A (en) * | 2013-05-08 | 2013-08-14 | 张文卓 | Stainless steel environment-friendly pickling solution |
| CN104532269A (en) * | 2014-11-28 | 2015-04-22 | 上海邦中高分子材料有限公司 | Safe and environmental-protection stainless steel pickling solution |
| CN104611712A (en) * | 2015-01-19 | 2015-05-13 | 邢台钢铁有限责任公司 | Hydrochloric-acid acid washing liquid and acid washing method for 400-series stainless steel hot-rolled annealing wire |
| CN104611711A (en) * | 2015-01-23 | 2015-05-13 | 邢台钢铁有限责任公司 | Pickling solution for high-alloy corrosion-resisting steel and pickling method |
| CN106947978A (en) * | 2017-02-09 | 2017-07-14 | 赵正芳 | New type stainless steel. corrosion resistance pickle |
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| CN107502904A (en) | 2017-12-22 |
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Effective date of registration: 20191204 Address after: Room 305, floor 3, health intelligent manufacturing center, No. 2, Jingba Road, Huangjia Park, Jingyang Economic Development Zone, Jingde County, Xuancheng City, Anhui Province Applicant after: Jingdejunchuang Technology Development Co.,Ltd. Address before: Anji County in Zhejiang province 313000 Huzhou City Dipu Licun natural village two Village No. 188 Applicant before: Jiang Zhiyuan |
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Effective date of registration: 20230217 Address after: 132013 No.116, Jingshan Road, Yanfeng Street, Fengman District, Jilin City, Jilin Province Patentee after: Jilin CRRC Industry and Trade Co.,Ltd. Address before: 242000 Room 305, 3rd floor, health intelligent manufacturing center, No.2 Jingba Road, Huangjia Park, Jingyang Town Economic Development Zone, Jingde County, Xuancheng City, Anhui Province Patentee before: Jingdejunchuang Technology Development Co.,Ltd. |
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