WO2012091412A3 - Eco-friendly high-speed pickling process for producing a low-chrome ferrite-based cold-rolled stainless steel sheet having superior surface quality - Google Patents

Eco-friendly high-speed pickling process for producing a low-chrome ferrite-based cold-rolled stainless steel sheet having superior surface quality Download PDF

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Publication number
WO2012091412A3
WO2012091412A3 PCT/KR2011/010157 KR2011010157W WO2012091412A3 WO 2012091412 A3 WO2012091412 A3 WO 2012091412A3 KR 2011010157 W KR2011010157 W KR 2011010157W WO 2012091412 A3 WO2012091412 A3 WO 2012091412A3
Authority
WO
WIPO (PCT)
Prior art keywords
steel sheet
pickling
stainless steel
ferrite
rolled stainless
Prior art date
Application number
PCT/KR2011/010157
Other languages
French (fr)
Korean (ko)
Other versions
WO2012091412A2 (en
WO2012091412A4 (en
Inventor
김지훈
김동훈
김진석
최상교
이용헌
Original Assignee
주식회사 포스코
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 주식회사 포스코 filed Critical 주식회사 포스코
Priority to JP2013547334A priority Critical patent/JP5768141B2/en
Priority to EP11852757.1A priority patent/EP2660364B1/en
Priority to CN201180068649.1A priority patent/CN103403230B/en
Publication of WO2012091412A2 publication Critical patent/WO2012091412A2/en
Publication of WO2012091412A3 publication Critical patent/WO2012091412A3/en
Publication of WO2012091412A4 publication Critical patent/WO2012091412A4/en

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Classifications

    • 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
    • C25F1/04—Pickling; Descaling in solution
    • C25F1/06—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
    • C23G1/08—Iron or steel
    • C23G1/086—Iron or steel solutions containing HF
    • 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
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F7/00—Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects; Servicing or operating

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

The present invention relates to a method for pickling the surface of a steel sheet at a high speed during the manufacture of a ferrite-based cold-rolled stainless steel sheet that requires high surface quality. The method for pickling a low-chrome ferrite-based cold-rolled stainless steel sheet at a high speed involves pickling the ferrite-based cold-rolled stainless steel sheet which contains 14% or less of chrome and which has undergone a degreasing and annealing process, wherein the method comprises a neutral-salt electrolyzing step consisting of the electrolytic removal of chrome-rich scale from the surface of the steel sheet using an electrolytic solution in which sodium sulfate is used as an electrolyte; a sulfuric-acid electrolyzing step consisting of the electrolytic removal of iron-rich scale using an electrolytic solution in which sulfuric acid is used as an electrolyte; and a mixed-acid immersion step consisting of immersing the steel sheet in a mixed acid solution containing sulfuric acid, hydrofluoric acid, and hydrogen peroxide, wherein the whole pickling process is completed within 15 to 240 seconds. According to the present invention, the use of nitric acid in pickling a ferrite-based cold-rolled stainless steel sheet can be avoided, thus reducing the burden of installing an NOx removal facility and a denitrification facility, and further, pickling may be adjusted in terms of the hydrogen peroxide concentration and hydrofluoric acid concentration, thus making the process easy to control and suitable for high-speed production. The quality of the steel sheet having undergone the pickling process of the present invention is improved as compared to that of the steel sheet of existing pickling process, the result being that a high-quality ferrite-based cold-rolled stainless steel sheet may be produced.
PCT/KR2011/010157 2010-12-28 2011-12-27 Eco-friendly high-speed pickling process for producing a low-chrome ferrite-based cold-rolled stainless steel sheet having superior surface quality WO2012091412A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2013547334A JP5768141B2 (en) 2010-12-28 2011-12-27 Eco-friendly high-speed pickling process for producing low chromium ferritic stainless steel cold rolled steel sheets with excellent surface quality
EP11852757.1A EP2660364B1 (en) 2010-12-28 2011-12-27 Eco-friendly high-speed pickling process for producing a low-chrome ferrite-based cold-rolled stainless steel sheet having superior surface quality
CN201180068649.1A CN103403230B (en) 2010-12-28 2011-12-27 Produce the Eco-friendly high speed pickling process with the low chrome ferritic base cold rolled stainless steel sheet of outstanding surface quality

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20100136140 2010-12-28
KR10-2010-0136140 2010-12-28
KR10-2011-0120187 2011-11-17
KR1020110120187A KR101289147B1 (en) 2010-12-28 2011-11-17 Environmental-Friendly and High Speed Pickling Process for Ferritic Stainless Cold Strip with Good Surface Quality

Publications (3)

Publication Number Publication Date
WO2012091412A2 WO2012091412A2 (en) 2012-07-05
WO2012091412A3 true WO2012091412A3 (en) 2012-10-04
WO2012091412A4 WO2012091412A4 (en) 2012-11-22

Family

ID=46709345

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/010157 WO2012091412A2 (en) 2010-12-28 2011-12-27 Eco-friendly high-speed pickling process for producing a low-chrome ferrite-based cold-rolled stainless steel sheet having superior surface quality

Country Status (5)

Country Link
EP (1) EP2660364B1 (en)
JP (1) JP5768141B2 (en)
KR (1) KR101289147B1 (en)
CN (1) CN103403230B (en)
WO (1) WO2012091412A2 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6031606B2 (en) * 2012-07-31 2016-11-24 ポスコＰｏｓｃｏ High speed pickling process for producing austenitic stainless cold rolled steel sheet
KR101382934B1 (en) * 2012-07-31 2014-04-17 주식회사 포스코 High Speed Pickling Process for Improving Corrosion Resistance of Austenitic Stainless Cold Strip
KR101353856B1 (en) * 2012-07-31 2014-01-21 주식회사 포스코 High speed pickling process at low temperature for austenitic stainless cold strip
KR101359098B1 (en) * 2012-07-31 2014-02-12 주식회사 포스코 High speed pickling process for austenitic stainless cold strip
CN103243339B (en) * 2013-04-16 2016-03-09 山西太钢不锈钢股份有限公司 Chrome super-purity ferrite stainless steel continuous annealing acid washing method in one
KR101461815B1 (en) * 2013-07-31 2014-11-13 주식회사 포스코 High Speed Pickling Method for Surface Improvement of High Chromium Ferritic Stainless Cold Steel Strip
KR101568477B1 (en) * 2013-11-08 2015-11-11 주식회사 포스코 Method for annealing-pickling ferritic stainless steel having high silicon content
CN104593857A (en) * 2014-12-16 2015-05-06 张家港浦项不锈钢有限公司 Ferrite stainless steel processing method
KR101676193B1 (en) 2015-10-22 2016-11-15 주식회사 포스코 Pickling method for low-chromium ferritic stainless cold steel strip
CN107587042B (en) * 2016-07-08 2020-05-19 Posco公司 Medium-low chromium ferrite stainless steel cold-rolled steel plate and pickling method thereof
CN107964662B (en) * 2017-11-02 2019-10-18 马鞍山市宝奕金属制品工贸有限公司 A method of promoting stainless steel surface glossiness
CN110195250A (en) * 2018-08-18 2019-09-03 贵州钢绳股份有限公司 A kind of plating alkali slot plait mode of connection
CN109267142A (en) * 2018-09-26 2019-01-25 中国民航大学 A kind of PH stainless steel room temperature electrolytic pickling method
CN115103933A (en) 2020-02-19 2022-09-23 杰富意钢铁株式会社 Descaling liquid for stainless steel and descaling method for stainless steel
JP7458902B2 (en) * 2020-05-21 2024-04-01 日鉄ステンレス株式会社 Ferritic Stainless Steel
JP7174747B2 (en) 2020-12-07 2022-11-17 住友理工株式会社 soundproof cover
CN112779548B (en) * 2020-12-27 2022-11-01 山东盛阳金属科技股份有限公司 300 is stainless steel pickling system

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH06212463A (en) * 1992-08-06 1994-08-02 Itb Srl Method for pickling of stainless steel
JPH1150283A (en) * 1997-07-31 1999-02-23 Parker Corp:Kk Descaling device and descaling method for stainless steel
KR20050032201A (en) * 2003-10-01 2005-04-07 창원특수강주식회사 Process for acid pickling of stainless steel products
KR20060092458A (en) * 2005-02-17 2006-08-23 주식회사 한솔케미칼 Pickling stainless steel in the absence of nitric acid

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JPH11172476A (en) * 1997-12-09 1999-06-29 Daido Steel Co Ltd Pickling treatment of iron base metal and pickling treating device
IT1302202B1 (en) * 1998-09-11 2000-07-31 Henkel Kgaa ELECTROLYTIC PICKLING PROCESS WITH SOLUTIONS FREE FROM ACIDONITRICO.
DE60215629T2 (en) * 2001-04-09 2007-09-06 AK Steel Properties, Inc., Middletown PROCESS FOR STAINLESS STEEL STAIN USING HYDROGEN PEROXIDE
JP4694048B2 (en) * 2001-06-15 2011-06-01 株式会社パーカーコーポレーション High-speed descaling method for stainless steel
DE10160318A1 (en) * 2001-12-07 2003-06-18 Henkel Kgaa Process for pickling martensitic or ferritic stainless steel
US8192556B2 (en) * 2002-10-15 2012-06-05 Henkel Kgaa Pickling or brightening/passivating solution and process for steel and stainless steel
JP4561579B2 (en) * 2005-10-13 2010-10-13 Ｊｆｅスチール株式会社 Pickling method and manufacturing method of stainless hot rolled steel
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06212463A (en) * 1992-08-06 1994-08-02 Itb Srl Method for pickling of stainless steel
JPH1150283A (en) * 1997-07-31 1999-02-23 Parker Corp:Kk Descaling device and descaling method for stainless steel
KR20050032201A (en) * 2003-10-01 2005-04-07 창원특수강주식회사 Process for acid pickling of stainless steel products
KR20060092458A (en) * 2005-02-17 2006-08-23 주식회사 한솔케미칼 Pickling stainless steel in the absence of nitric acid

Non-Patent Citations (1)

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Title
See also references of EP2660364A4 *

Also Published As

Publication number Publication date
WO2012091412A2 (en) 2012-07-05
EP2660364A4 (en) 2014-08-13
JP5768141B2 (en) 2015-08-26
CN103403230A (en) 2013-11-20
JP2014501337A (en) 2014-01-20
CN103403230B (en) 2016-02-24
KR20120075344A (en) 2012-07-06
WO2012091412A4 (en) 2012-11-22
EP2660364A2 (en) 2013-11-06
KR101289147B1 (en) 2013-07-23
EP2660364B1 (en) 2016-03-09

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