EP0471662A3 - Process for pickling stainless steel - Google Patents

Process for pickling stainless steel Download PDF

Info

Publication number
EP0471662A3
EP0471662A3 EP19910890156 EP91890156A EP0471662A3 EP 0471662 A3 EP0471662 A3 EP 0471662A3 EP 19910890156 EP19910890156 EP 19910890156 EP 91890156 A EP91890156 A EP 91890156A EP 0471662 A3 EP0471662 A3 EP 0471662A3
Authority
EP
European Patent Office
Prior art keywords
pickling
stainless steel
grade steel
acid
pickling stainless
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
EP19910890156
Other languages
German (de)
Other versions
EP0471662B1 (en
EP0471662A2 (en
Inventor
Gerald Dr. Dipl.-Ing. Maresch
Erich Mahr
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.)
Andritz Patentverwaltungs GmbH
Original Assignee
Andritz Patentverwaltungs GmbH
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 Andritz Patentverwaltungs GmbH filed Critical Andritz Patentverwaltungs GmbH
Publication of EP0471662A2 publication Critical patent/EP0471662A2/en
Publication of EP0471662A3 publication Critical patent/EP0471662A3/en
Application granted granted Critical
Publication of EP0471662B1 publication Critical patent/EP0471662B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Heat Treatment Of Steel (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

Process for pickling high-grade steel, preferably high-grade steel hot strip, the high-grade steel being subjected to pickling with neutral electrolyte as well as to an after-treatment with mixed acid, nitric acid or a mixture of iron fluoride and hydrofluoric acid, the pickling with neutral electrolyte being preceded by a pre-treatment with sulfuric acid.
EP91890156A 1990-07-27 1991-07-17 Process for pickling stainless steel Expired - Lifetime EP0471662B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0157990A AT395601B (en) 1990-07-27 1990-07-27 METHOD FOR STAINLESSING STAINLESS STEEL
AT1579/90 1990-07-27

Publications (3)

Publication Number Publication Date
EP0471662A2 EP0471662A2 (en) 1992-02-19
EP0471662A3 true EP0471662A3 (en) 1992-05-20
EP0471662B1 EP0471662B1 (en) 1995-09-13

Family

ID=3516469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91890156A Expired - Lifetime EP0471662B1 (en) 1990-07-27 1991-07-17 Process for pickling stainless steel

Country Status (10)

Country Link
US (1) US5130000A (en)
EP (1) EP0471662B1 (en)
JP (1) JP2721053B2 (en)
KR (1) KR100218840B1 (en)
AT (2) AT395601B (en)
DE (1) DE59106467D1 (en)
ES (1) ES2079634T3 (en)
RU (1) RU2085616C1 (en)
UA (1) UA25894A1 (en)
ZA (1) ZA915877B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT402737B (en) * 1992-04-29 1997-08-25 Andritz Patentverwaltung Method for discontinuous pickling of metallic plates, in particular made of stainless steel
US6096183A (en) * 1997-12-05 2000-08-01 Ak Steel Corporation Method of reducing defects caused by conductor roll surface anomalies using high volume bottom sprays
KR20080048148A (en) * 2006-11-28 2008-06-02 주식회사 한울로보틱스 System protecting touch-screen of robot
TWI452181B (en) * 2011-09-26 2014-09-11 Ak Steel Properties Inc Stainless steel pickling in an oxidizing, electrolytic acid bath
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
RU2578623C1 (en) * 2014-12-30 2016-03-27 Публичное акционерное общество "Ашинский металлургический завод" Electrolytic method for removing scales from belt of rolled metal
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0113500A2 (en) * 1982-11-24 1984-07-18 Allegheny Ludlum Steel Corporation Process for manufacturing metal articles and for removing oxide scale therefrom
EP0367112A1 (en) * 1988-10-29 1990-05-09 Hitachi, Ltd. Method of descaling stainless steel and apparatus for same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5550468A (en) * 1978-10-11 1980-04-12 Kawasaki Steel Corp Pickling method for cr base stainless steel
JPS61266588A (en) * 1985-05-22 1986-11-26 Nisshin Steel Co Ltd Method for descaling stainless steel
AT387406B (en) * 1987-05-07 1989-01-25 Andritz Ag Maschf METHOD FOR ELECTROLYTICALLY STICKING CHROME-CONTAINING STAINLESS STEEL
JPS63295011A (en) * 1987-05-26 1988-12-01 Nisshin Steel Co Ltd Descaling device for stainless steel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0113500A2 (en) * 1982-11-24 1984-07-18 Allegheny Ludlum Steel Corporation Process for manufacturing metal articles and for removing oxide scale therefrom
EP0367112A1 (en) * 1988-10-29 1990-05-09 Hitachi, Ltd. Method of descaling stainless steel and apparatus for same

Also Published As

Publication number Publication date
EP0471662B1 (en) 1995-09-13
EP0471662A2 (en) 1992-02-19
DE59106467D1 (en) 1995-10-19
KR100218840B1 (en) 1999-09-01
ATE127866T1 (en) 1995-09-15
JPH04232299A (en) 1992-08-20
ZA915877B (en) 1992-04-29
KR920002826A (en) 1992-02-28
AT395601B (en) 1993-02-25
RU2085616C1 (en) 1997-07-27
UA25894A1 (en) 1999-02-26
ES2079634T3 (en) 1996-01-16
US5130000A (en) 1992-07-14
ATA157990A (en) 1992-06-15
JP2721053B2 (en) 1998-03-04

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