EP4056737A4 - Ionic liquid for pickling stainless steel and method for pickling stainless steel by using same - Google Patents

Ionic liquid for pickling stainless steel and method for pickling stainless steel by using same Download PDF

Info

Publication number
EP4056737A4
EP4056737A4 EP20889474.1A EP20889474A EP4056737A4 EP 4056737 A4 EP4056737 A4 EP 4056737A4 EP 20889474 A EP20889474 A EP 20889474A EP 4056737 A4 EP4056737 A4 EP 4056737A4
Authority
EP
European Patent Office
Prior art keywords
stainless steel
pickling stainless
same
ionic liquid
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.)
Pending
Application number
EP20889474.1A
Other languages
German (de)
French (fr)
Other versions
EP4056737A1 (en
Inventor
Jin-Suk Kim
Jaejoon Lee
Byungkwon KIM
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Posco Co Ltd filed Critical Posco Co Ltd
Publication of EP4056737A1 publication Critical patent/EP4056737A1/en
Publication of EP4056737A4 publication Critical patent/EP4056737A4/en
Pending legal-status Critical Current

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
    • C23G1/28—Cleaning or pickling metallic material with solutions or molten salts with molten salts
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
    • C25F1/02—Pickling; Descaling
    • C25F1/12—Pickling; Descaling in melts
    • C25F1/14—Iron or steel
    • 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
    • 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
    • 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
    • C23G1/24—Cleaning or pickling metallic material with solutions or molten salts with neutral solutions
    • 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
    • C23G1/28—Cleaning or pickling metallic material with solutions or molten salts with molten salts
    • C23G1/32—Heavy metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
EP20889474.1A 2019-11-21 2020-10-16 Ionic liquid for pickling stainless steel and method for pickling stainless steel by using same Pending EP4056737A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020190150288A KR102300834B1 (en) 2019-11-21 2019-11-21 Ionic liquid for pickling stainless steel and pickling method for stainless steel using the same
PCT/KR2020/014199 WO2021101076A1 (en) 2019-11-21 2020-10-16 Ionic liquid for pickling stainless steel and method for pickling stainless steel by using same

Publications (2)

Publication Number Publication Date
EP4056737A1 EP4056737A1 (en) 2022-09-14
EP4056737A4 true EP4056737A4 (en) 2023-01-11

Family

ID=75981320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20889474.1A Pending EP4056737A4 (en) 2019-11-21 2020-10-16 Ionic liquid for pickling stainless steel and method for pickling stainless steel by using same

Country Status (5)

Country Link
US (1) US20230059039A1 (en)
EP (1) EP4056737A4 (en)
KR (1) KR102300834B1 (en)
CN (1) CN114829682A (en)
WO (1) WO2021101076A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006088737A2 (en) * 2005-02-14 2006-08-24 Small Robert J Semiconductor cleaning
WO2010052123A1 (en) * 2008-11-05 2010-05-14 Henkel Ag & Co. Kgaa Ionic liquid composition for the removal of oxide scale
CN108505066A (en) * 2018-06-27 2018-09-07 东北大学 A kind of method that high-efficiency electrochemical prepares aluminium in ionic liquid

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2587369B1 (en) 1985-09-19 1993-01-29 Ugine Gueugnon Sa PROCESS OF ACID STRIPPING OF STAINLESS STEEL PRODUCTS
US5154774A (en) 1985-09-19 1992-10-13 Ugine Aciers De Chatillon Et Gueugnon Process for acid pickling of stainless steel products
DE3937438C2 (en) 1989-02-23 1998-01-29 Wilfried Simmer Steel pickling process
IT1255655B (en) 1992-08-06 1995-11-09 STAINLESS STEEL PICKLING AND PASSIVATION PROCESS WITHOUT THE USE OF NITRIC ACID
JP3213833B2 (en) * 1994-01-31 2001-10-02 ダイソー株式会社 Electrolytic pickling method for stainless steel plate and electrode used for it
IT1312556B1 (en) 1999-05-03 2002-04-22 Henkel Kgaa STAINLESS STEEL PICKLING PROCESS IN THE ABSENCE OF ACIDONITRICO AND IN THE PRESENCE OF CHLORIDE IONS
ATE444381T1 (en) * 2002-09-10 2009-10-15 Nippon Mining Co METHOD FOR METAL DEPOSITION AND PRETREATMENT AGENTS
US9090966B2 (en) * 2009-06-08 2015-07-28 Basf Se Use of ionic liquids for the pretreatment of surfaces of plastics for metallization
KR101342359B1 (en) * 2011-10-31 2013-12-16 이병록 Surface treatment method for nut bore
KR101359098B1 (en) * 2012-07-31 2014-02-12 주식회사 포스코 High speed pickling process for austenitic stainless cold strip
KR101592147B1 (en) * 2015-08-19 2016-02-04 이대석 A method manufacturing an oxide layer of an aluminium substrate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006088737A2 (en) * 2005-02-14 2006-08-24 Small Robert J Semiconductor cleaning
WO2010052123A1 (en) * 2008-11-05 2010-05-14 Henkel Ag & Co. Kgaa Ionic liquid composition for the removal of oxide scale
CN108505066A (en) * 2018-06-27 2018-09-07 东北大学 A kind of method that high-efficiency electrochemical prepares aluminium in ionic liquid

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
KIM BYUNG-KWON ET AL: "Application of ionic liquids for metal dissolution and extraction", JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, vol. 61, 28 December 2017 (2017-12-28), KOREA, pages 388 - 397, XP093003138, ISSN: 1226-086X, DOI: 10.1016/j.jiec.2017.12.038 *
LEE JUNGEUN ET AL: "Electrochemical Descaling of Metal Oxides from Stainless Steel Using an Ionic Liquid-Acid Solution", ACS OMEGA, vol. 5, no. 25, 19 June 2020 (2020-06-19), US, pages 15709 - 15714, XP093003213, ISSN: 2470-1343, Retrieved from the Internet <URL:http://pubs.acs.org/doi/pdf/10.1021/acsomega.0c02163> [retrieved on 20221129], DOI: 10.1021/acsomega.0c02163 *
See also references of WO2021101076A1 *
VERMA CHANDRABHAN ET AL: "Ionic liquids as green and sustainable corrosion inhibitors for metals and alloys: An overview", JOURNAL OF MOLECULAR LIQUIDS, vol. 233, 2 March 2017 (2017-03-02), pages 403 - 414, XP029975527, ISSN: 0167-7322, DOI: 10.1016/J.MOLLIQ.2017.02.111 *
WHITEHEAD J A ET AL: "Comparative leaching of a sulfidic gold ore in ionic liquid and aqueous acid with thiourea and halides using Fe(III) or HSO"5^- oxidant", HYDROMETALLURGY, ELSEVIER SCIENTIFIC PUBLISHING CY. AMSTERDAM, NL, vol. 98, no. 3-4, 28 May 2009 (2009-05-28), pages 276 - 280, XP026224376, ISSN: 0304-386X, [retrieved on 20090528], DOI: 10.1016/J.HYDROMET.2009.05.012 *

Also Published As

Publication number Publication date
KR20210062272A (en) 2021-05-31
EP4056737A1 (en) 2022-09-14
KR102300834B1 (en) 2021-09-13
CN114829682A (en) 2022-07-29
WO2021101076A1 (en) 2021-05-27
US20230059039A1 (en) 2023-02-23

Similar Documents

Publication Publication Date Title
EP3969067A4 (en) Ionic oxidation refreshing system and method
EP3862452A4 (en) Austenitic stainless steel sheet and method for producing same
EP3987709A4 (en) Method and apparatus for ss/pbch block repetition
EP4050929A4 (en) Method and apparatus for executing intent
EP3702476A4 (en) Apparatus and method for rapidly heating cold-rolled strip steel
EP4035787A4 (en) Method for rolling super austenitic stainless steel
EP3556880A4 (en) Ferrite stainless hot-rolled steel sheet and production method therefor
EP3843477A4 (en) Method and apparatus for indicating wave beam
EP4027532A4 (en) Beam indication method and apparatus
EP3778860A4 (en) Operating program for cell culture assistance apparatus, cell culture assistance apparatus, and operating method for cell culture assistance apparatus
EP3486347A4 (en) Hot-rolled and annealed ferritic stainless steel sheet and method for producing same
EP3805417A4 (en) Ferritic stainless steel sheet and method for producing same
EP3944623A4 (en) Dmvr-based inter prediction method and apparatus
EP4024228A4 (en) System and method for batch and real-time feature calculation
EP4008065A4 (en) Method and apparatus for low-latency beam selection
EP3683324A4 (en) Austenitic stainless steel and method for producing same
EP3786868A4 (en) Payment method and system for pledge-payable online trading
EP3915981A4 (en) Method for preparation of efinaconazole in ionic liquid medium
EP3902180A4 (en) Quasi-co-location indication method and apparatus
EP3875624A4 (en) Austenitic stainless steel sheet
PL3803368T3 (en) Method for in-line measuring the percentage of austenite in steels
EP4022931A4 (en) Apparatus and method for performing deblocking
EP3953026A4 (en) System and method for water treatment
KR102262004B9 (en) System and method for products trading
EP3856683A4 (en) Liquid treatment unit and method

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220608

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: POSCO

A4 Supplementary search report drawn up and despatched

Effective date: 20221212

RIC1 Information provided on ipc code assigned before grant

Ipc: C23G 1/08 20060101ALI20221206BHEP

Ipc: C23G 1/28 20060101ALI20221206BHEP

Ipc: C25F 1/06 20060101ALI20221206BHEP

Ipc: C23G 1/24 20060101ALI20221206BHEP

Ipc: C23G 1/32 20060101ALI20221206BHEP

Ipc: C25F 1/14 20060101AFI20221206BHEP

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)