CA2205122A1 - Hydrogen peroxide pickling of stainless steel - Google Patents

Hydrogen peroxide pickling of stainless steel

Info

Publication number
CA2205122A1
CA2205122A1 CA002205122A CA2205122A CA2205122A1 CA 2205122 A1 CA2205122 A1 CA 2205122A1 CA 002205122 A CA002205122 A CA 002205122A CA 2205122 A CA2205122 A CA 2205122A CA 2205122 A1 CA2205122 A1 CA 2205122A1
Authority
CA
Canada
Prior art keywords
strip
scale
hydrogen peroxide
inorganic acid
stainless steel
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.)
Granted
Application number
CA002205122A
Other languages
French (fr)
Other versions
CA2205122C (en
Inventor
Ronald D. Rodabaugh
Jerald W. Leeker
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.)
Armco Inc
Original Assignee
Armco Inc
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
Priority claimed from US08/667,498 external-priority patent/US5702534A/en
Priority claimed from US08/821,154 external-priority patent/US5743968A/en
Application filed by Armco Inc filed Critical Armco Inc
Publication of CA2205122A1 publication Critical patent/CA2205122A1/en
Application granted granted Critical
Publication of CA2205122C publication Critical patent/CA2205122C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C23G1/02—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
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/08—Iron or steel
    • C23G1/081—Iron or steel solutions containing H2SO4

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)
  • Treating Waste Gases (AREA)

Abstract

A process for removing scale from stainless steel using an aqueous solution containing hydrogen peroxide and an inorganic acid, i.e., hydrochloric or sulfuric acid. A hot rolled or annealed stainless steel strip (10) covered with scale is immersed into hot inorganic acid contained within pickling tanks (12) and (14). Thereafter, the strip may have residual amounts of tightly adherent scale (11). This scale is activated by a solution containing the inorganic acid and hydrogen peroxide applied to the strip such as by a spray header (16) extending completely transversely across and positioned above the strip and another spray header (18) extending completely transversely across and positioned below the strip. It may be desirable to pass the activated strip through the hot inorganic acid again and reactivate the strip at very high line speeds to insure complete removal of scale from the strip. Any hydrogen peroxide spray dripping from the strip is collected on a catch pan (30) and flowed into a tank (28). Preferably, the collected spent aqueous solution containing the inorganic acid and spent hydrogen peroxide is disposed in the pickling tanks. The aqueous solution aids in the removal of any residual scale and smut remaining on the strip thereby improving the cleanliness of the pickled strip.
CA002205122A 1996-05-24 1997-05-12 Hydrogen peroxide pickling of stainless steel Expired - Fee Related CA2205122C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/667,498 1996-05-24
US08/667,498 US5702534A (en) 1996-05-24 1996-05-24 Hydrogen peroxide pickling of stainless steel
US08/821,154 1997-03-20
US08/821,154 US5743968A (en) 1997-03-20 1997-03-20 Hydrogen peroxide pickling of stainless steel

Publications (2)

Publication Number Publication Date
CA2205122A1 true CA2205122A1 (en) 1997-11-24
CA2205122C CA2205122C (en) 2008-07-15

Family

ID=27099693

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002205122A Expired - Fee Related CA2205122C (en) 1996-05-24 1997-05-12 Hydrogen peroxide pickling of stainless steel

Country Status (14)

Country Link
EP (1) EP0808919B1 (en)
JP (1) JP4032319B2 (en)
KR (1) KR100492841B1 (en)
CN (1) CN1177082C (en)
AR (1) AR007285A1 (en)
AT (1) ATE204033T1 (en)
AU (1) AU706523B2 (en)
BR (1) BR9703228A (en)
CA (1) CA2205122C (en)
DE (1) DE69705993T2 (en)
DK (1) DK0808919T3 (en)
ES (1) ES2162155T3 (en)
MX (1) MX9703809A (en)
TW (1) TW416996B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR0208747B1 (en) * 2001-04-09 2011-02-08 hydrogen peroxide removal process and apparatus.
CA2443687C (en) * 2001-04-09 2009-08-11 Vijay N. Madi Hydrogen peroxide pickling of silicon-containing electrical steel grades
KR100470410B1 (en) * 2002-05-29 2005-02-07 주식회사 포스코 Pickling method for reducing hot spot of cold rolled strip surface
KR100948923B1 (en) * 2003-05-29 2010-03-23 주식회사 포스코 Device for removing scale on strip in pickling line
CN101922011B (en) * 2010-08-06 2012-08-29 东北大学 Pickling method of surface of 430 stainless steel
KR101316393B1 (en) * 2011-08-10 2013-10-08 주식회사 포스코 Eco-friendly scale removing system of martensitic stainless steel sheet and method for manufacturing martensitic stainless steel sheet using the same
EP3029163B9 (en) 2014-12-02 2019-11-27 CMI UVK GmbH Method and system of treating a carbon steel strip, especially for pickling
CN106148973A (en) * 2015-04-21 2016-11-23 宝钢特钢有限公司 A kind of acid washing method of hot rolling ordinary stainless steel plate
CN105908195B (en) * 2016-06-02 2018-03-27 中冶南方工程技术有限公司 A kind of hot rolling 409L ferritic stainless steels are without nitric acid acidwashing method
CN105887104A (en) * 2016-06-02 2016-08-24 中冶南方工程技术有限公司 Nitric acid-free pickling method for hot-rolled 439 ferrite stainless steel
CN105908196A (en) * 2016-06-02 2016-08-31 中冶南方工程技术有限公司 Nitric acid-free acid washing method of hot-rolled 304 austenitic stainless steel
CN106011886A (en) * 2016-06-02 2016-10-12 中冶南方工程技术有限公司 Nitric acid-free pickling method for hot-rolled 201 austenitic stainless steel
CN105887103A (en) * 2016-06-02 2016-08-24 中冶南方工程技术有限公司 Nitric acid-free acid pickling method for hot-rolled 430 ferritic stainless steel
CN106435607B (en) * 2016-06-30 2021-05-18 宝钢德盛不锈钢有限公司 Environment-friendly continuous annealing and pickling production method for stainless steel hot-rolled coil and pickling solution
CN106835159B (en) * 2016-12-27 2021-05-18 宝钢德盛不锈钢有限公司 Continuous pickling method and pickling solution for medium-high chromium stainless steel cold-rolled coil
TWI657167B (en) * 2018-02-21 2019-04-21 中國鋼鐵股份有限公司 Pickled steel belt cleaning device
WO2020067884A1 (en) * 2018-09-24 2020-04-02 Lely Patent N.V. Milking system with detection system
CN110316511A (en) * 2019-06-05 2019-10-11 浙江长兴鼎昌金属制品有限公司 A kind of energy-saving equipment producing cooling conveying for stainless steel
CN114011790A (en) * 2021-11-25 2022-02-08 桂林电子科技大学 Automatic pickling processing equipment for mechanical parts
CN114959717A (en) * 2022-06-15 2022-08-30 中冶华天工程技术有限公司 Method for removing iron scale of ferritic stainless steel

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895856A (en) * 1955-12-15 1959-07-21 United States Steel Corp Method of pickling chromium-containing steel tubes
JPS5096431A (en) * 1973-12-28 1975-07-31
SE439025B (en) * 1979-09-13 1985-05-28 Fagersta Ab SET TO REMOVE OXID LAYERS FROM THE SURFACE OF HOT ROLLED STAINLESS STEEL
JPS5681688A (en) * 1979-12-06 1981-07-03 Kawasaki Steel Corp Pickling method for hot rolled austenitic stainless steel plate
JPS5861283A (en) * 1981-10-05 1983-04-12 Sumitomo Metal Ind Ltd Descaling method for steel wire rod by pickling
JPS60152689A (en) * 1984-01-19 1985-08-10 Nippon Steel Corp Pickling method for preventing die galling of hot rolled steel sheet
JPS60243289A (en) * 1984-05-17 1985-12-03 Kobe Steel Ltd Pickling method
US5154774A (en) * 1985-09-19 1992-10-13 Ugine Aciers De Chatillon Et Gueugnon Process for acid pickling of stainless steel products
IT1255655B (en) * 1992-08-06 1995-11-09 STAINLESS STEEL PICKLING AND PASSIVATION PROCESS WITHOUT THE USE OF NITRIC ACID
JPH06320494A (en) * 1993-05-18 1994-11-22 Tokai Kikai Seisakusho:Kk Trimming processing device for wood hardboard and the like
DE4420718A1 (en) * 1994-06-15 1995-12-21 Gewerk Keramchemie Pickling strip or sheet material

Also Published As

Publication number Publication date
CA2205122C (en) 2008-07-15
CN1178262A (en) 1998-04-08
DE69705993T2 (en) 2002-04-04
AU706523B2 (en) 1999-06-17
KR100492841B1 (en) 2005-08-31
BR9703228A (en) 1998-09-01
CN1177082C (en) 2004-11-24
MX9703809A (en) 1998-04-30
DE69705993D1 (en) 2001-09-13
JP4032319B2 (en) 2008-01-16
KR970074980A (en) 1997-12-10
EP0808919B1 (en) 2001-08-08
ATE204033T1 (en) 2001-08-15
AR007285A1 (en) 1999-10-27
ES2162155T3 (en) 2001-12-16
EP0808919A1 (en) 1997-11-26
AU2360197A (en) 1997-11-27
DK0808919T3 (en) 2001-10-08
JPH1046373A (en) 1998-02-17
TW416996B (en) 2001-01-01

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Legal Events

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EEER Examination request
MKLA Lapsed

Effective date: 20170512