ATE129753T1 - METHOD FOR PICKLING AND PASSIVING STAINLESS STEEL WITHOUT USING NITRIC ACID. - Google Patents

METHOD FOR PICKLING AND PASSIVING STAINLESS STEEL WITHOUT USING NITRIC ACID.

Info

Publication number
ATE129753T1
ATE129753T1 AT91113628T AT91113628T ATE129753T1 AT E129753 T1 ATE129753 T1 AT E129753T1 AT 91113628 T AT91113628 T AT 91113628T AT 91113628 T AT91113628 T AT 91113628T AT E129753 T1 ATE129753 T1 AT E129753T1
Authority
AT
Austria
Prior art keywords
pickling
stainless steel
passiving
nitric acid
bath
Prior art date
Application number
AT91113628T
Other languages
German (de)
Inventor
Marco Bianchi
Original Assignee
Itb Srl
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11359360&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE129753(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Itb Srl filed Critical Itb Srl
Application granted granted Critical
Publication of ATE129753T1 publication Critical patent/ATE129753T1/en

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
    • C23G1/086—Iron or steel solutions containing HF
    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (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)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Detergent Compositions (AREA)

Abstract

A process for pickling and passivating stainless steel using a bath of the following initial composition: H2SO4 at least 150 g/l Fe<3><+> at least 15 g/l HF at least 40 g/l stabilized H2O2 1-20 g/l non-ionic surfactants and acid attack inhibitors 1 g/l, into which an air flow and an H2O2 quantity of between 0.3 and 1 g/l per hour, controlled to maintain the bath Redox potential at >/= 350 mV, are fed in continuously.
AT91113628T 1991-03-29 1991-08-14 METHOD FOR PICKLING AND PASSIVING STAINLESS STEEL WITHOUT USING NITRIC ACID. ATE129753T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI910879A IT1245594B (en) 1991-03-29 1991-03-29 PICKLING AND PASSIVATION PROCESS OF STAINLESS STEEL WITHOUT NITRIC ACID

Publications (1)

Publication Number Publication Date
ATE129753T1 true ATE129753T1 (en) 1995-11-15

Family

ID=11359360

Family Applications (1)

Application Number Title Priority Date Filing Date
AT91113628T ATE129753T1 (en) 1991-03-29 1991-08-14 METHOD FOR PICKLING AND PASSIVING STAINLESS STEEL WITHOUT USING NITRIC ACID.

Country Status (9)

Country Link
EP (1) EP0505606B2 (en)
JP (1) JP2655770B2 (en)
AT (1) ATE129753T1 (en)
DE (2) DE505606T1 (en)
DK (1) DK0505606T3 (en)
ES (1) ES2082063T5 (en)
FI (1) FI101234B (en)
GR (1) GR3018681T3 (en)
IT (1) IT1245594B (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1255655B (en) * 1992-08-06 1995-11-09 STAINLESS STEEL PICKLING AND PASSIVATION PROCESS WITHOUT THE USE OF NITRIC ACID
IT1255855B (en) * 1992-10-12 1995-11-17 Cesare Pedrazzini PICKLING AND PASSIVATION PROCESS FOR TITANIUM SHEETS IN TAPE, WITHOUT THE USE OF NITRIC ACID.
DE4237021C1 (en) * 1992-11-02 1994-02-10 Poligrat Gmbh Means for pickling the surface of chromium-nickel steels and chrome steels and use of the agent
DE4417284C2 (en) * 1993-05-24 1999-03-25 Alfred Schmitz Process for pickling workpieces from high-alloy materials
ES2247593T3 (en) * 1994-09-26 2006-03-01 Steris, Inc. STAINLESS STEEL ACID TREATMENT.
IT1276954B1 (en) * 1995-10-18 1997-11-03 Novamax Itb S R L PICKLING AND PASSIVATION PROCESS OF STAINLESS STEEL WITHOUT THE USE OF NITRIC ACID
FR2745301B1 (en) * 1996-02-27 1998-04-03 Usinor Sacilor PROCESS FOR STRIPPING A STEEL PART AND PARTICULARLY A STAINLESS STEEL SHEET STRIP
FR2772050B1 (en) * 1997-12-10 1999-12-31 Imphy Sa PROCESS FOR STRIPPING STEEL AND IN PARTICULAR STAINLESS STEEL
DE19755350A1 (en) * 1997-12-12 1999-06-17 Henkel Kgaa Process for pickling and passivating stainless steel
EP0974682A1 (en) * 1998-07-18 2000-01-26 Henkel Kommanditgesellschaft auf Aktien Method and apparatus for the chemical treatment of metalsurfaces
IT1302202B1 (en) 1998-09-11 2000-07-31 Henkel Kgaa ELECTROLYTIC PICKLING PROCESS WITH SOLUTIONS FREE FROM ACIDONITRICO.
IT1303814B1 (en) * 1998-12-02 2001-02-23 Henkel Kgaa APPARATUS AND METHOD TO CONTROL PERACCIAIO PICKLING PROCESSES.
DE10157340A1 (en) * 2001-11-22 2003-05-28 Sms Demag Ag Process for treating the surfaces of a metal strand used for pickling a steel strip comprises moving the strand through a closed treatment channel at a regulated speed while directing turbulent jets of a pickling liquid
DE10160318A1 (en) 2001-12-07 2003-06-18 Henkel Kgaa Process for pickling martensitic or ferritic stainless steel
ES2350095T3 (en) 2002-10-15 2011-01-18 HENKEL AG &amp; CO. KGAA SOLUTION AND DECAPING PROCEDURE FOR STAINLESS STEEL.
EP1793016A1 (en) * 2005-12-01 2007-06-06 Elpochem AG Polishing and deburring composition for workpieces of carbon steel and method of chemical polishing and deburring
KR100936348B1 (en) * 2007-12-21 2010-01-12 주식회사 포스코 High corrosion resistance surface treatment solution fostering material of low chromium stainless steel and passcivity treatment method of stainless steel by using the fostering material
CN102337548B (en) * 2011-09-14 2012-12-05 西部钛业有限责任公司 Acid washing method of titanium and zirconium materials without acid-free fog
GB2499000A (en) * 2012-02-02 2013-08-07 Henkel Ag & Co Kgaa Aqueous acidic pickling solution with hydroxylamine accelerators
GB2508827A (en) 2012-12-11 2014-06-18 Henkel Ag & Co Kgaa Aqueous compositions and processes for passivating and brightening stainless steel surfaces
DE102012024542A1 (en) * 2012-12-14 2014-06-18 Poligrat Gmbh Thixotropic mordant
JP6526406B2 (en) * 2014-12-10 2019-06-05 株式会社Ihi Method of passivating stainless steel parts and passivating solution for stainless steel parts
CN108220937A (en) * 2018-01-18 2018-06-29 浙江苏泊尔股份有限公司 A kind of processing method of stainless steel work-piece high temperature resistance discoloration
JP6592624B2 (en) * 2019-01-15 2019-10-16 株式会社Ihi Passivation treatment method for stainless steel parts and passivation treatment liquid for stainless steel parts
US20220220619A1 (en) * 2020-01-09 2022-07-14 Primetals Technologies Japan, Ltd. Method for pickling steel plate and pickling apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS549120A (en) * 1977-06-24 1979-01-23 Tokai Electro Chemical Co Method of controlling acid cleaning liquid for stainless steel
JPS5442850A (en) * 1977-09-10 1979-04-05 Kubota Ltd Method of treating raw sewage
JPS5551514A (en) * 1978-10-12 1980-04-15 Osaka Cement Steel fiber mixing method and its device
JPS568109A (en) * 1979-07-03 1981-01-27 Toshikazu Iwasaki Reflecting telescope
ATE121804T1 (en) * 1985-01-22 1995-05-15 Ugine Sa METHOD FOR ACID PICKLING STEEL, PARTICULARLY STAINLESS STEEL.
FR2587369B1 (en) * 1985-09-19 1993-01-29 Ugine Gueugnon Sa PROCESS OF ACID STRIPPING OF STAINLESS STEEL PRODUCTS

Also Published As

Publication number Publication date
EP0505606B1 (en) 1995-11-02
DE505606T1 (en) 1994-02-03
DE69114265T3 (en) 2004-08-05
JPH04304391A (en) 1992-10-27
ES2082063T5 (en) 2003-11-01
FI101234B (en) 1998-05-15
FI920580A (en) 1992-09-30
ES2082063T3 (en) 1996-03-16
EP0505606B2 (en) 2003-02-26
FI920580A0 (en) 1992-02-12
JP2655770B2 (en) 1997-09-24
DE69114265D1 (en) 1995-12-07
DK0505606T3 (en) 1995-12-04
DE69114265T2 (en) 1996-04-18
IT1245594B (en) 1994-09-29
GR3018681T3 (en) 1996-04-30
ITMI910879A1 (en) 1992-09-29
ITMI910879A0 (en) 1991-03-29
EP0505606A1 (en) 1992-09-30

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
EEIH Change in the person of patent owner
EEIH Change in the person of patent owner
REN Ceased due to non-payment of the annual fee