ATE10016T1 - METHOD OF ACID PICKLING IRON AND FERROUS ALLOYS AND COMPOSITION FOR CARRYING OUT THE PROCESS. - Google Patents
METHOD OF ACID PICKLING IRON AND FERROUS ALLOYS AND COMPOSITION FOR CARRYING OUT THE PROCESS.Info
- Publication number
- ATE10016T1 ATE10016T1 AT80850166T AT80850166T ATE10016T1 AT E10016 T1 ATE10016 T1 AT E10016T1 AT 80850166 T AT80850166 T AT 80850166T AT 80850166 T AT80850166 T AT 80850166T AT E10016 T1 ATE10016 T1 AT E10016T1
- Authority
- AT
- Austria
- Prior art keywords
- acid
- per litre
- mole per
- carrying
- agent
- Prior art date
Links
Classifications
-
- 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
- C23G1/083—Iron or steel solutions containing H3PO4
Landscapes
- 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)
- Ultra Sonic Daignosis Equipment (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Luminescent Compositions (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention relates to a method of acid pickling metallic material having an iron content of at least about 80 per cent by weight, while simultaneously inhibiting exposed metal surfaces against dissolution by acid attack. The method comprises bringing the material into contact with an aqueous solution containing phosphoric acid and one or both of the mineral acids hydrochloric acid and sulphuric acid. The phosphoric acid concentration is adjusted to at least about 0.01 mole per litre and at most about 1 mole per litre, while the total acid concentration is adjusted to the range between about 0.5 and 4 mole per litre. The invention also relates to a pickling agent for carrying out the method. The agent contains one or both of the mineral acids hydrochloric acid and sulphuric acid and has a total acid concentration of between about 0.5 and 4 mole per litre. The agent contains as an inhibitor phosphoric acid in a amount of at least about 0.01 mole per litre and at most about 1 mole per litre. The agent may also contain Fe(II)-ions.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7909187 | 1979-11-06 | ||
EP80850166A EP0029418B1 (en) | 1979-11-06 | 1980-11-05 | A method of acid pickling iron and iron alloys and a composition for carrying out the method |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE10016T1 true ATE10016T1 (en) | 1984-11-15 |
Family
ID=20339264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT80850166T ATE10016T1 (en) | 1979-11-06 | 1980-11-05 | METHOD OF ACID PICKLING IRON AND FERROUS ALLOYS AND COMPOSITION FOR CARRYING OUT THE PROCESS. |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0029418B1 (en) |
JP (1) | JPS56501490A (en) |
AT (1) | ATE10016T1 (en) |
DE (1) | DE3069514D1 (en) |
DK (1) | DK289081A (en) |
FI (1) | FI68865C (en) |
NO (1) | NO812196L (en) |
WO (1) | WO1981001298A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2288190A (en) * | 1994-04-08 | 1995-10-11 | Wonder Wheels | Cleaning composition containing hydrochloric acid |
US6420178B1 (en) * | 2000-09-20 | 2002-07-16 | General Electric Company | High throughput screening method, array assembly and system |
US10450668B2 (en) | 2017-04-11 | 2019-10-22 | Savannah River Nuclear Solutions, Llc | Development of a passivated stainless steel surface |
CN108930043A (en) * | 2018-08-15 | 2018-12-04 | 东莞市同盛电子科技有限公司 | A kind of cleaning agent and preparation method thereof removing metal oxide layer and application method |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU152603A3 (en) * | 1900-01-01 | |||
US1279331A (en) * | 1918-05-11 | 1918-09-17 | James H Gravell | Pickling iron and steel. |
US2559445A (en) * | 1946-12-12 | 1951-07-03 | Union Switch & Signal Co | Method for removing scale from steel |
FR1148779A (en) * | 1956-02-01 | 1957-12-13 | Process for protecting metals against corrosion by strong acids and compositions for the implementation of this process | |
US2923608A (en) * | 1956-04-13 | 1960-02-02 | Fmc Corp | Method of improving the bonding properties of steel surfaces |
BE579543A (en) * | 1958-06-19 | |||
US3438799A (en) * | 1965-06-22 | 1969-04-15 | Chem Eng Ltd | Method for the surface treatment of metal articles |
US3457107A (en) * | 1965-07-20 | 1969-07-22 | Diversey Corp | Method and composition for chemically polishing metals |
BE740608A (en) * | 1968-10-22 | 1970-04-01 | Metal cleaning and protection process | |
BE790538A (en) * | 1971-10-26 | 1973-02-15 | Ericsson Telefon Ab L M | ALUMINUM CHEMICAL CLEANING BATH |
FR2208006A1 (en) * | 1972-11-24 | 1974-06-21 | Produits Ind Cie Fse | De-passivation of stainless steel - prior to plating or coating with copper, nickel, chromium, zinc, manganese, oxalate or phosphate |
-
1980
- 1980-11-05 EP EP80850166A patent/EP0029418B1/en not_active Expired
- 1980-11-05 DE DE8080850166T patent/DE3069514D1/en not_active Expired
- 1980-11-05 AT AT80850166T patent/ATE10016T1/en not_active IP Right Cessation
- 1980-11-05 WO PCT/SE1980/000273 patent/WO1981001298A1/en active IP Right Grant
- 1980-11-05 JP JP50259280A patent/JPS56501490A/ja active Pending
-
1981
- 1981-06-26 NO NO812196A patent/NO812196L/en unknown
- 1981-06-30 DK DK289081A patent/DK289081A/en not_active Application Discontinuation
- 1981-07-03 FI FI812107A patent/FI68865C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO1981001298A1 (en) | 1981-05-14 |
DE3069514D1 (en) | 1984-11-29 |
FI68865B (en) | 1985-07-31 |
NO812196L (en) | 1981-06-26 |
EP0029418B1 (en) | 1984-10-24 |
EP0029418A1 (en) | 1981-05-27 |
DK289081A (en) | 1981-06-30 |
JPS56501490A (en) | 1981-10-15 |
FI68865C (en) | 1985-11-11 |
FI812107L (en) | 1981-07-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee |