CN103882453A - Pickling liquid used for cleaning austenitic stainless steel - Google Patents
Pickling liquid used for cleaning austenitic stainless steel Download PDFInfo
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- CN103882453A CN103882453A CN201210558225.XA CN201210558225A CN103882453A CN 103882453 A CN103882453 A CN 103882453A CN 201210558225 A CN201210558225 A CN 201210558225A CN 103882453 A CN103882453 A CN 103882453A
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- stainless steel
- cleaning
- austenitic stainless
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- pickle solution
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Abstract
The invention relates to a pickling liquid used for cleaning austenitic stainless steel. The pickling liquid comprises, by weight, 38-40 parts of nitric acid with the concentration of 98%, 3-5 parts of ammonium bifluoride, 0.2-0.4 parts of sheet iron and 55-57 parts of water. The pickling liquid has the advantages of simple and convenient preparation and production process, simple and convenient maintenance and adjustment, substantial reduction of the high risk of traditionally added hydrofluoric acid or three acids and the work environment difficult to breath, reasonable ratio, strong stability, low cost, low corrosiveness and risk, and use convenience.
Description
Technical field
The invention belongs to pickle solution field, especially a kind of for cleaning the pickle solution of austenitic stainless steel.
Background technology
Austenitic stainless steel products is pipeline especially in the middle of making generally, and hot pressing easily produces brown oxide compound after welding, and the said rusty stain of people, must be removed.Existing pickling mode generally adopts hydrofluoric acid and ferric sulfate to mix immersion test specimen or three acid: the techniques such as sulfuric acid, nitric acid, hydrofluoric acid.There is following defect in above technique: 1, hydrofluoric acid is that one has strong impulse smell, is fuming, the great a kind of acid of corrodibility; 2, operating process danger is larger, and operating environment is quite severe.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of for cleaning the pickle solution of austenitic stainless steel, this pickle solution reasonable ratio, stability is strong, and cost is lower, and corrodibility and danger are less, easy to use.
The present invention solves its technical problem and is achieved through the following technical solutions:
For cleaning a pickle solution for austenitic stainless steel, component and the ratio of weight and number thereof of its pickle solution are respectively:
Concentration is nitric acid 38-40 part of 98%;
Ammonium bifluoride 3-5 part;
Iron plate 0.2-0.4 part;
Water 55-57 part.
And the component of described pickle solution and optimum ratio of weight and number thereof are respectively
Concentration is 39 parts, 98% nitric acid;
4 parts of ammonium bifluorides;
0.3 part of iron plate;
56.7 parts, water.
And described ammonium bifluoride is industrial ammonium bifluoride.
Advantage of the present invention and beneficial effect are:
1, this adopts nitric acid, ammonium bifluoride, iron plate mixed aqueous solution to make for cleaning the pickle solution of austenitic stainless steel, replaces hydrofluoric acid to have be that it has the ability of good inhibition iron and steel liberation of hydrogen in acid cleaning process, avoids iron and steel generation hydrogen embrittlement with ammonium bifluoride.
2, the present invention is simple to operation in pickle solution preparation, production process and solution maintenance, adjustment, greatly reduce the high risk that tradition adds hydrofluoric acid or three acid, operating environment with difficulty breathing, reasonable ratio of the present invention, stability is strong, cost is lower, and corrodibility and danger are less, easy to use.
Embodiment
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
Embodiment 1
For cleaning a pickle solution for austenitic stainless steel, component and the weight thereof of its pickle solution are respectively: the nitric acid 38Kg that concentration is 98%; Ammonium bifluoride 3Kg; Iron plate 0.2Kg; Water 55Kg.Preparation method of the present invention is: in suitable quantity of water, slowly add 98% nitric acid, after solution is cooling, continue fluoridize hydrogen ammonium, iron plate, add water to proportional quantity pickle solution.
Embodiment 2
For cleaning a pickle solution for austenitic stainless steel, component and the weight thereof of its pickle solution are respectively: the nitric acid 40Kg that concentration is 98%; Ammonium bifluoride 5Kg; Iron plate 0.4Kg; Water 57Kg.
The present embodiment is used for the preparation method of the pickle solution that cleans austenitic stainless steel with embodiment 1.
Embodiment 3
For cleaning a pickle solution for austenitic stainless steel, component and the weight thereof of its pickle solution are respectively: the nitric acid 39Kg that concentration is 98%; Ammonium bifluoride 4Kg; Iron plate 0.3Kg; Water 56.7Kg.
The present embodiment is used for the preparation method of the pickle solution that cleans austenitic stainless steel with embodiment 1.
The present invention is warming up to 60-65 DEG C by the pickle solution of the present invention configuring in use, and test specimen is immersed in pickle solution, sets soak time 20-25 minute according to test specimen size, then please rinse by water with flowing.
Claims (3)
1. for cleaning a pickle solution for austenitic stainless steel, it is characterized in that: component and the ratio of weight and number thereof of this pickle solution are respectively:
Concentration is nitric acid 38-40 part of 98%;
Ammonium bifluoride 3-5 part;
Iron plate 0.2-0.4 part;
Water 55-57 part.
2. according to claim 1 for cleaning the pickle solution of austenitic stainless steel, it is characterized in that: the component of described pickle solution and optimum ratio of weight and number thereof are respectively
Concentration is 39 parts, 98% nitric acid;
4 parts of ammonium bifluorides;
0.3 part of iron plate;
56.7 parts, water.
3. according to claim 1 and 2 for cleaning the pickle solution of austenitic stainless steel, it is characterized in that: described ammonium bifluoride is industrial ammonium bifluoride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210558225.XA CN103882453B (en) | 2012-12-19 | 2012-12-19 | For cleaning the pickle solution of austenitic stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210558225.XA CN103882453B (en) | 2012-12-19 | 2012-12-19 | For cleaning the pickle solution of austenitic stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103882453A true CN103882453A (en) | 2014-06-25 |
| CN103882453B CN103882453B (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210558225.XA Active CN103882453B (en) | 2012-12-19 | 2012-12-19 | For cleaning the pickle solution of austenitic stainless steel |
Country Status (1)
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| CN (1) | CN103882453B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114717559A (en) * | 2022-03-03 | 2022-07-08 | 深圳市金泉益科技有限公司 | Titanium etching solution and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006249488A (en) * | 2005-03-10 | 2006-09-21 | Ishitobi Seisakusho:Kk | Detergent for stainless steel |
| US20070209685A1 (en) * | 2006-03-07 | 2007-09-13 | Abbott Laboratories | Method of descaling metallic devices |
| CN101215699A (en) * | 2007-01-06 | 2008-07-09 | 汉达精密电子(昆山)有限公司 | Stainless steel whitening solution and whitening technique thereof |
-
2012
- 2012-12-19 CN CN201210558225.XA patent/CN103882453B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006249488A (en) * | 2005-03-10 | 2006-09-21 | Ishitobi Seisakusho:Kk | Detergent for stainless steel |
| US20070209685A1 (en) * | 2006-03-07 | 2007-09-13 | Abbott Laboratories | Method of descaling metallic devices |
| CN101215699A (en) * | 2007-01-06 | 2008-07-09 | 汉达精密电子(昆山)有限公司 | Stainless steel whitening solution and whitening technique thereof |
Non-Patent Citations (2)
| Title |
|---|
| CRAIG J ETAL.: "PECOERY OF STAINLESS STEEL PICKLE LIQUORS:PURIFICATION VS.REGENERATION", 《SALES & MARKETING TP》, 31 August 2002 (2002-08-31), pages 1 - 14 * |
| 胡顺生: "奥氏体不锈钢酸洗钝化新工艺研究", 《化工设计通讯》, vol. 25, no. 1, 31 March 1999 (1999-03-31), pages 52 - 53 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114717559A (en) * | 2022-03-03 | 2022-07-08 | 深圳市金泉益科技有限公司 | Titanium etching solution and application thereof |
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| Publication number | Publication date |
|---|---|
| CN103882453B (en) | 2016-02-10 |
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Inventor after: Wang Zhipeng Inventor after: Zhang Yuqin Inventor after: Ma Wenhui Inventor before: Zhang Yuqin Inventor before: Wang Zhipeng Inventor before: Ma Wenhui |
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