IT1245594B - PICKLING AND PASSIVATION PROCESS OF STAINLESS STEEL WITHOUT NITRIC ACID - Google Patents

PICKLING AND PASSIVATION PROCESS OF STAINLESS STEEL WITHOUT NITRIC ACID

Info

Publication number
IT1245594B
IT1245594B ITMI910879A ITMI910879A IT1245594B IT 1245594 B IT1245594 B IT 1245594B IT MI910879 A ITMI910879 A IT MI910879A IT MI910879 A ITMI910879 A IT MI910879A IT 1245594 B IT1245594 B IT 1245594B
Authority
IT
Italy
Prior art keywords
pickling
stainless steel
passivation process
nitric acid
h2so4
Prior art date
Application number
ITMI910879A
Other languages
Italian (it)
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=IT1245594(B) "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
Priority to ITMI910879A priority Critical patent/IT1245594B/en
Publication of ITMI910879A0 publication Critical patent/ITMI910879A0/en
Priority to EP91113628A priority patent/EP0505606B2/en
Priority to DE69114265T priority patent/DE69114265T3/en
Priority to DE91113628T priority patent/DE505606T1/en
Priority to DK91113628.1T priority patent/DK0505606T3/en
Priority to ES91113628T priority patent/ES2082063T5/en
Priority to AT91113628T priority patent/ATE129753T1/en
Priority to JP3284206A priority patent/JP2655770B2/en
Priority to FI920580A priority patent/FI101234B/en
Publication of ITMI910879A1 publication Critical patent/ITMI910879A1/en
Priority to US08/002,942 priority patent/US5354383A/en
Publication of IT1245594B publication Critical patent/IT1245594B/en
Application granted granted Critical
Priority to GR960400082T priority patent/GR3018681T3/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)
  • 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)
  • Detergent Compositions (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)

Abstract

Procedimento per il decapaggio e la passivazione di acciaio inox in cui si impiega un bagno avente composizione iniziale:H2SO4 almeno 150 g/l Fe3+ almeno 15 g/l HF almeno 40 g/l H2O2 stabilizzata 1 + 20 g/l tensioattivi non ionici e inibitori di attacco acido: l g/l, nel quale viene immesso in continuo nel corso del trattamento un flusso di aria e un quantitativo di H2O2 compreso tra 0,3 e 1 g/l per ora e regolato in modo da mantenere il potenziale Redox del bagno a valore ? 350 mV.Pickling and passivation process of stainless steel in which a bath having an initial composition is used: H2SO4 at least 150 g / l Fe3 + at least 15 g / l HF at least 40 g / l H2O2 stabilized 1 + 20 g / l non-ionic surfactants and acid attack inhibitors: lg / l, in which a flow of air and a quantity of H2O2 between 0.3 and 1 g / l per hour is continuously introduced during the treatment and regulated so as to maintain the Redox potential of the value bathroom? 350 mV.

ITMI910879A 1991-03-29 1991-03-29 PICKLING AND PASSIVATION PROCESS OF STAINLESS STEEL WITHOUT NITRIC ACID IT1245594B (en)

Priority Applications (11)

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
AT91113628T ATE129753T1 (en) 1991-03-29 1991-08-14 METHOD FOR PICKLING AND PASSIVING STAINLESS STEEL WITHOUT USING NITRIC ACID.
ES91113628T ES2082063T5 (en) 1991-03-29 1991-08-14 PROCEDURE FOR DECAPING AND PASSIVING STAINLESS STEEL IN THE ABSENCE OF NITRIC ACID.
DE69114265T DE69114265T3 (en) 1991-03-29 1991-08-14 Process for pickling and passivating stainless steel without using nitric acid.
DE91113628T DE505606T1 (en) 1991-03-29 1991-08-14 Process for pickling and passivating stainless steel without using nitric acid.
DK91113628.1T DK0505606T3 (en) 1991-03-29 1991-08-14 Process for pickling and passivation of stainless steel without the use of nitric acid
EP91113628A EP0505606B2 (en) 1991-03-29 1991-08-14 Process for pickling and passivating stainless steel without using nitric acid
JP3284206A JP2655770B2 (en) 1991-03-29 1991-10-04 How to pickle and passivate stainless steel without using nitric acid
FI920580A FI101234B (en) 1991-03-29 1992-02-12 Process for pickling and passivation of stainless steel without using nitric acid
US08/002,942 US5354383A (en) 1991-03-29 1993-01-11 Process for pickling and passivating stainless steel without using nitric acid
GR960400082T GR3018681T3 (en) 1991-03-29 1996-01-17 Process for pickling and passivating stainless steel without using nitric acid.

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 (3)

Publication Number Publication Date
ITMI910879A0 ITMI910879A0 (en) 1991-03-29
ITMI910879A1 ITMI910879A1 (en) 1992-09-29
IT1245594B true IT1245594B (en) 1994-09-29

Family

ID=11359360

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI910879A IT1245594B (en) 1991-03-29 1991-03-29 PICKLING AND PASSIVATION PROCESS OF STAINLESS STEEL WITHOUT 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
EP0776256B1 (en) * 1994-09-26 2005-07-27 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
JP4332115B2 (en) * 2002-10-15 2009-09-16 ヘンケル・アクチェンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト・アウフ・アクチェン Solutions and methods for pickling or brightening / passivating steel and 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 composition of low chromium stainless steel and passivation method of stainless steel using same
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
CN113906162B (en) * 2020-01-09 2023-06-23 普锐特冶金技术日本有限公司 Method and apparatus for pickling steel sheet

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
GR3018681T3 (en) 1996-04-30
JPH04304391A (en) 1992-10-27
DE69114265D1 (en) 1995-12-07
ATE129753T1 (en) 1995-11-15
FI920580A0 (en) 1992-02-12
FI101234B (en) 1998-05-15
EP0505606B2 (en) 2003-02-26
DE69114265T2 (en) 1996-04-18
DE69114265T3 (en) 2004-08-05
ITMI910879A0 (en) 1991-03-29
EP0505606B1 (en) 1995-11-02
EP0505606A1 (en) 1992-09-30
FI920580A7 (en) 1992-09-30
DK0505606T3 (en) 1995-12-04
ES2082063T3 (en) 1996-03-16
ES2082063T5 (en) 2003-11-01
JP2655770B2 (en) 1997-09-24
DE505606T1 (en) 1994-02-03
ITMI910879A1 (en) 1992-09-29

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Legal Events

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0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970427