CN105951106A - Special hydrochloric acid pickling corrosion inhibitor for spring steel - Google Patents
Special hydrochloric acid pickling corrosion inhibitor for spring steel Download PDFInfo
- Publication number
- CN105951106A CN105951106A CN201610391652.1A CN201610391652A CN105951106A CN 105951106 A CN105951106 A CN 105951106A CN 201610391652 A CN201610391652 A CN 201610391652A CN 105951106 A CN105951106 A CN 105951106A
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- CN
- China
- Prior art keywords
- hydrochloric acid
- spring steel
- corrosion inhibitor
- pickling
- acid pickling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
- C23G1/063—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors heterocyclic compounds
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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
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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)
Abstract
The invention provides a special hydrochloric acid pickling corrosion inhibitor for spring steel. The special hydrochloric acid pickling corrosion inhibitor is prepared from the following materials in weight proportion: 10 to 30g of urotropine, 2 to 10g of geramine, 1 to 5g of ammonium iodide and 100 to 150ml of water. According to the special hydrochloric acid pickling corrosion inhibitor for the spring steel, provided by the invention, the corrosion of hydrochloric acid to a steel matrix is reduced, and the influence on performance of the spring steel is reduced; in the pickling process, the capability of hydrogen absorption of steel is reduced, and the hydrogen embrittlement phenomenon of the steel is effectively inhibited; the utilization rate of a pickling solution is improved; and by adding the corrosion inhibitor, harmful corrosion of the pickling solution to the spring steel is effectively inhibited, thereby inhibiting excessive consumption of the pickling solution. The special hydrochloric acid pickling corrosion inhibitor provided by the invention has predominant advantages of low consumption and high efficiency of removing oxide scale. In addition, corrosion inhibitor components do not contain toxic substances, so the special hydrochloric acid pickling corrosion inhibitor is safe to a human body.
Description
Technical field
The invention belongs to chemical field, relate to a kind of corrosion inhibiter, specifically a kind of special hydrochloric acid pickling corrosion inhibitor of spring steel.
Background technology
In spring steel production process, first needing to remove the oxide skin of steel surface, the hydrochloric acid that in commercial production, conventional corrosivity is stronger carries out pickling.During chlorohydric acid pickling removes surface scale, owing to hydrochloric acid is relatively strong to the corrosivity of steel, " crossing erosion " phenomenon often occurs, spring steel matrix is caused certain corrosion, affects the performance of spring steel material, and cause the waste of pickle.Meanwhile, in acid cleaning process, the hydrogen that pickling produces is constantly to steel matrix permeability, and the firm matrix of spring inhales hydrogen, causes " hydrogen embrittlement ", affects mechanical performance and the service life of spring steel.In order to remove steel surface oxide skin, protect steel matrix, and reduce steel hydrogen-absorbing ability, effectively suppress spring steel " hydrogen embrittlement " phenomenon, use and add restrainer.
Open (announcement) number: the CN105177604 of Chinese patent discloses a kind of compound hydrochloric acid pickling corrosion inhibitor and compound method, and its main component includes hexamethylenamine, propilolic alcohol, alkylamine and surfactant, but wherein propilolic alcohol belongs to extremely toxic substance；Chinese patent application (announcement) number: CN105132929 discloses a kind of hydrochloric acid pickling corrosion inhibitor and preparation method thereof, its main component includes sodium rhodanate, imidazoline and its derivative, pickling fog inhibitor, aniline etc., but imidazolines is required for greatly the building-up process of complexity, and production cost is higher.
Summary of the invention
For above-mentioned technical problem of the prior art, the invention provides a kind of special hydrochloric acid pickling corrosion inhibitor of spring steel, the technical problem that in described this spring steel special hydrochloric acid pickling corrosion inhibitor prior art to be solved, restrainer contains severe toxicity, production cost is high, the corrosion inhibiter in the present invention is exclusively used in spring steel chlorohydric acid pickling.
The invention provides a kind of special hydrochloric acid pickling corrosion inhibitor of spring steel, be made up of hexamethylenamine, geramine, ammonium iodide and water, the material ratio of hexamethylenamine, geramine, ammonium iodide and water is: 10g-30g:2g-10g:1g-5g:100ml-150ml.
Further, the material ratio of hexamethylenamine, geramine, ammonium iodide and water is: 10g:10g:5g:150ml.
Further, the material ratio of hexamethylenamine, geramine, ammonium iodide and water is: 10g:5g:5g:120ml.
Further, the material ratio of hexamethylenamine, geramine, ammonium iodide and water is: 5g:3g:2g:100ml.
Hexamethylenamine is one of commonly used corrosion inhibiter, and its inhibition mechanism is considered Adsorption Model, hexamethylenamine molecular weight in theory, is easily desorbed in metal surface, so hexamethylenamine need to carry out compounding with other materials has more preferable corrosion mitigating effect.
Geramine (dodecyl dimethyl benzyl ammonium chloride) is a kind of cation surfactant, soluble in water, has good dispersion osmosis, plays good infiltration corrosion inhibition in acid cleaning process, good with hexamethylenamine synergism.
Ammonium iodide is a kind of cationic surfactant, and absorption makes in metal surface metal surface have more excess charges, promotes the hexamethylenamine absorption in metal surface, and with hexamethylenamine, the synergism of geramine is good.
The spring steel hydrochloric acid pickling corrosion inhibitor application process in spring steel pickling that is exclusively used in of the present invention is: add in pickle hydrochloric acid by the corrosion inhibiter obtained according to percentage composition in the ratio of 1ml/100ml, the volume of hydrochloric acid is 500ml, mass percent concentration is 24%, add 5ml corrosion inhibiter, it is heated to 65 DEG C, spring steel sample is immersed in 2min-5min in pickle.The weight-loss ratio measuring spring steel sample calculates inhibition efficiency, and inhibition efficiency can reach more than 90%, effectively prevents the hydrochloric acid corrosion to matrix, the waste of minimizing acid solution, and weakens the hydrogen-absorbing ability of spring steel, is prevented effectively from spring steel " hydrogen embrittlement " phenomenon.It is that one is exclusively used in spring steel hydrochloric acid pickling corrosion inhibitor efficiently.
Compared with prior art, its technological progress is significant to the present invention.The present invention is exclusively used in spring steel hydrochloric acid pickling corrosion inhibition, reduces the hydrochloric acid corrosion to steel matrix, decreases the impact on spring steel steel performance.In acid cleaning process, reduce the hydrogen-absorbing ability of steel, effectively inhibit the generation of steel " hydrogen embrittlement " phenomenon.The present invention improves the utilization rate of pickle, and the interpolation of corrosion inhibiter effectively inhibits the acid solution unwanted corrosion to spring steel, thus inhibits consuming excessively of acid solution.It is few that the present invention also has consumption, the outstanding advantages that scale removal efficiency is high.The corrosion inhibiter composition of the present invention does not contains noxious substance, safe to the human body.
Detailed description of the invention
Below example is that the present invention is described in further detail.Before and after employing pickling, the weight-loss ratio of material characterizes the corrosion rate of material.
The definition of corrosion inhibiter: slow down the chemical substance of material corrosion, in this invention, corrosion inhibiter is exclusively used in spring steel, during surface scale removed by spring steel, slows down the chemical substance of corrosion.
Embodiment
1
The degree that the present invention is exclusively used in spring steel restrainer is as follows: hexamethylenamine 10g, geramine 10g, ammonium iodide 5g, water 150ml.Spring steel sample for experiment is: material is 55SiCr, a diameter of 16mm, a length of 20mm.
Restrainer application in spring steel pickling: the corrosion inhibiter obtained according to above-mentioned percentage composition is added in pickle hydrochloric acid according to the ratio of 1g/100ml, the volume of hydrochloric acid is 500ml, mass percent concentration is 24%, add 5ml corrosion inhibiter, it is heated to 65 DEG C, spring steel sample is immersed in 5min in pickle.Weight-loss ratio is 0.0017g/min.The weight-loss ratio not adding corrosion inhibiter is 0.0316g/min.Inhibition efficiency is 94.62%.It is shown as efficient corrosion inhibiter.
Embodiment
2
The degree that the present invention is exclusively used in spring steel restrainer is as follows: hexamethylenamine 10g, geramine 5g, ammonium iodide 5g, water 120ml.Spring steel sample for experiment is: material is 60Si2Mn, a diameter of 15mm, a length of 20mm.
Restrainer application in spring steel pickling: the corrosion inhibiter obtained according to above-mentioned percentage composition is added in pickle hydrochloric acid according to the ratio of 1g/100ml, the volume of hydrochloric acid is 500ml, mass percent concentration is 24%, add 5ml corrosion inhibiter, it is heated to 65 DEG C, spring steel sample is immersed in 5min in pickle.Weight-loss ratio is 0.0016g/min.The weight-loss ratio not adding corrosion inhibiter is 0.0335g/min.Inhibition efficiency is 95.22%.It is shown as efficient corrosion inhibiter.
Embodiment
3
The degree that the present invention is exclusively used in spring steel restrainer is as follows: hexamethylenamine 5g, geramine 3g, ammonium iodide 2g, water 100ml.Spring steel sample for experiment is: material is 55SiCr, a diameter of 18mm, a length of 20mm.
Restrainer application in spring steel pickling: the corrosion inhibiter obtained according to above-mentioned percentage composition is added in pickle hydrochloric acid according to the ratio of 1g/100ml, the volume of hydrochloric acid is 500ml, mass percent concentration is 24%, add 5ml corrosion inhibiter, it is heated to 65 DEG C, spring steel sample is immersed in 5min in pickle.Weight-loss ratio is 0.0022g/min.The weight-loss ratio not adding corrosion inhibiter is 0.0382g/min.Inhibition efficiency is 94.24%.It is shown as efficient corrosion inhibiter.
Claims (4)
1. the special hydrochloric acid pickling corrosion inhibitor of spring steel, it is characterised in that: being made up of hexamethylenamine, geramine, ammonium iodide and water, the material ratio of hexamethylenamine, geramine, ammonium iodide and water is: 10g-30g:2g-10g:1g-5g:100ml-150ml.
2. a kind of special hydrochloric acid pickling corrosion inhibitor of spring steel as claimed in claim 1, it is characterised in that: the material ratio of hexamethylenamine, geramine, ammonium iodide and water is: 10g:10g:5g:150ml.
3. a kind of special hydrochloric acid pickling corrosion inhibitor of spring steel as claimed in claim 1, it is characterised in that: the material ratio of hexamethylenamine, geramine, ammonium iodide and water is: 10g:5g:5g:120ml.
4. a kind of special hydrochloric acid pickling corrosion inhibitor of spring steel as claimed in claim 1, it is characterised in that: the material ratio of hexamethylenamine, geramine, ammonium iodide and water is: 5g:3g:2g:100ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610391652.1A CN105951106A (en) | 2016-06-06 | 2016-06-06 | Special hydrochloric acid pickling corrosion inhibitor for spring steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610391652.1A CN105951106A (en) | 2016-06-06 | 2016-06-06 | Special hydrochloric acid pickling corrosion inhibitor for spring steel |
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| Publication Number | Publication Date |
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| CN105951106A true CN105951106A (en) | 2016-09-21 |
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| CN201610391652.1A Pending CN105951106A (en) | 2016-06-06 | 2016-06-06 | Special hydrochloric acid pickling corrosion inhibitor for spring steel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107541736A (en) * | 2017-08-30 | 2018-01-05 | 青岛沃尔特节能工程技术有限公司 | A kind of station boiler pickling solid corrosion inhibitor |
| CN109055946A (en) * | 2018-09-27 | 2018-12-21 | 山西太钢不锈钢股份有限公司 | Carbon steel and low-alloy steel cut surface oxide layer pickling solution and acid washing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766876A (en) * | 2012-07-23 | 2012-11-07 | 辽宁科技大学 | Environment-friendly pickling inhibitor and application thereof in pickling of carbon steel |
| CN105002509A (en) * | 2015-07-30 | 2015-10-28 | 攀钢集团攀枝花钢铁研究院有限公司 | Corrosion inhibitor for pickling solution and pickling method adopting same |
-
2016
- 2016-06-06 CN CN201610391652.1A patent/CN105951106A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766876A (en) * | 2012-07-23 | 2012-11-07 | 辽宁科技大学 | Environment-friendly pickling inhibitor and application thereof in pickling of carbon steel |
| CN105002509A (en) * | 2015-07-30 | 2015-10-28 | 攀钢集团攀枝花钢铁研究院有限公司 | Corrosion inhibitor for pickling solution and pickling method adopting same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107541736A (en) * | 2017-08-30 | 2018-01-05 | 青岛沃尔特节能工程技术有限公司 | A kind of station boiler pickling solid corrosion inhibitor |
| CN109055946A (en) * | 2018-09-27 | 2018-12-21 | 山西太钢不锈钢股份有限公司 | Carbon steel and low-alloy steel cut surface oxide layer pickling solution and acid washing method |
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Application publication date: 20160921 |
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