RU2008126184A - METHOD FOR SCALDING - Google Patents
METHOD FOR SCALDING Download PDFInfo
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- RU2008126184A RU2008126184A RU2008126184/02A RU2008126184A RU2008126184A RU 2008126184 A RU2008126184 A RU 2008126184A RU 2008126184/02 A RU2008126184/02 A RU 2008126184/02A RU 2008126184 A RU2008126184 A RU 2008126184A RU 2008126184 A RU2008126184 A RU 2008126184A
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- RU
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- edta
- hedp
- mol
- protonated
- complex
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- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Предлагается новый способ удаления окалины с углеродистых сталей, заключающийся в использовании растворов, содержащих 0,002-0,005 моль/л комплексона (ОЭДФ или ЭДТА), включающих протонированный комплекс Fe(II) в концентрациях от 0,01-0,1 моль/л при рН 1,5 (ОЭДФ) и рН 2,5-3,5 (ЭДТА), при Т=60-110°С и интенсивном перемешивании ω=1000 об/мин после продувки раствора азотом или добавления гидразина 10 мг/л: ! Этилендиаминтетрауксусная кислота (ЭДТА)5-20 г/лПротонированный комплекс Fe(II) с ЭДТА или ОЭДФ2-20 г/лH2SO41-2 г/лГидразин (или гидроксиламин)0,01 г/лA new method of descaling from carbon steels is proposed, which consists in using solutions containing 0.002-0.005 mol / L complexon (HEDP or EDTA), including the protonated Fe (II) complex in concentrations from 0.01-0.1 mol / L at pH 1.5 (OEDP) and pH 2.5-3.5 (EDTA), at T = 60-110 ° C and vigorous stirring ω = 1000 rpm after purging the solution with nitrogen or adding hydrazine 10 mg / l:! Ethylenediaminetetraacetic acid (EDTA) 5-20 g / l Protonated complex of Fe (II) with EDTA or HEDP 2-20 g / l H2SO41-2 g / l Hydrazine (or hydroxylamine) 0.01 g / l
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2008126184/02A RU2386729C2 (en) | 2008-06-30 | 2008-06-30 | Scale removal method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2008126184/02A RU2386729C2 (en) | 2008-06-30 | 2008-06-30 | Scale removal method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RU2008126184A true RU2008126184A (en) | 2010-01-10 |
| RU2386729C2 RU2386729C2 (en) | 2010-04-20 |
Family
ID=41643631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2008126184/02A RU2386729C2 (en) | 2008-06-30 | 2008-06-30 | Scale removal method |
Country Status (1)
| Country | Link |
|---|---|
| RU (1) | RU2386729C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2500795C1 (en) * | 2012-06-29 | 2013-12-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный машиностроительный университет (МАМИ)" | Agent for chemical removal of corrosion deposits from metal surfaces |
| RU2507312C1 (en) * | 2012-06-29 | 2014-02-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный машиностроительный университет (МАМИ)" | Method of cleaning metal surfaces from corrosion deposits |
| RU2627377C1 (en) * | 2016-12-22 | 2017-08-08 | ГОДЗОЕВ Олег Александрович | Composition for dissoluting corrosive deposits |
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2008
- 2008-06-30 RU RU2008126184/02A patent/RU2386729C2/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| RU2386729C2 (en) | 2010-04-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20140701 |