BR9901085A - Processo para decapar aço ou uma liga de niquel ou cromo em um banho de decapagem acidico aquoso, e, empregando uma solucao de decapagem contendo oxidante ácido. - Google Patents

Processo para decapar aço ou uma liga de niquel ou cromo em um banho de decapagem acidico aquoso, e, empregando uma solucao de decapagem contendo oxidante ácido.

Info

Publication number
BR9901085A
BR9901085A BR9901085-2A BR9901085A BR9901085A BR 9901085 A BR9901085 A BR 9901085A BR 9901085 A BR9901085 A BR 9901085A BR 9901085 A BR9901085 A BR 9901085A
Authority
BR
Brazil
Prior art keywords
nickel
solution containing
bath
steel
pickling
Prior art date
Application number
BR9901085-2A
Other languages
English (en)
Inventor
Sarah J Colgan
Neil J Sanders
Original Assignee
Solvay
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 Solvay filed Critical Solvay
Publication of BR9901085A publication Critical patent/BR9901085A/pt

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/21—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers
    • B01F25/211—Jet mixers, i.e. mixers using high-speed fluid streams with submerged injectors, e.g. nozzles, for injecting high-pressure jets into a large volume or into mixing chambers the injectors being surrounded by guiding tubes
    • 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
    • C23G1/086—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
    • 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
    • C23G1/36—Regeneration of waste pickling liquors
    • 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
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle

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)

Abstract

"PROCESSOS PARA DECAPAR AçO OU UMA LIGA DE NìQUEL OU CROMO EM UM BANHO DE DECAPAGEM ACìDICO AQUOSO, E, EMPREGANDO UMA SOLUçãO DE DECAPAGEM CONTENDO OXIDANTE áCIDO". No processo de decapagem da invenção, aço e ligas de níquel e cromo são decapadas com uma solução de decapagem ácida empregando um oxidante, particularmente peróxido de hidrogênio, e em que o licor é recirculado através de entradas compreendendo um licro de alimentação de bocal em um difusor, como que o licor é retirado do banho e o volume do licor fluindo através do difusor é um múltiplo de fluxo através do bocal. Aço ou ligas são decapados com uma solução ácida contendo ferro e peróxido de hidrogênio livre a uma concentração de até 0,1 gpl. O processo pode operar efetivamente a uma concentração de fluoreto livre de 20 a 30 gpl e uma concentração de ácido sulfúrico de 80 a 110 gpl. O tempo de vida do banho antes de precisar ser substituído pode ser estendido pelo processo comparado com o uso de um sistema de agitação de ar.
BR9901085-2A 1998-04-06 1999-04-06 Processo para decapar aço ou uma liga de niquel ou cromo em um banho de decapagem acidico aquoso, e, empregando uma solucao de decapagem contendo oxidante ácido. BR9901085A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9807286.1A GB9807286D0 (en) 1998-04-06 1998-04-06 Pickling process

Publications (1)

Publication Number Publication Date
BR9901085A true BR9901085A (pt) 1999-12-14

Family

ID=10829879

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9901085-2A BR9901085A (pt) 1998-04-06 1999-04-06 Processo para decapar aço ou uma liga de niquel ou cromo em um banho de decapagem acidico aquoso, e, empregando uma solucao de decapagem contendo oxidante ácido.

Country Status (4)

Country Link
US (2) US6210491B1 (pt)
EP (1) EP0949354A1 (pt)
BR (1) BR9901085A (pt)
GB (1) GB9807286D0 (pt)

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JP4175463B2 (ja) 2001-04-09 2008-11-05 エイケイ・スティール・プロパティーズ・インコーポレイテッド ステンレス鋼等級のための過酸化水素酸洗計画
US6599371B2 (en) 2001-04-09 2003-07-29 Ak Steel Corporation Hydrogen peroxide pickling scheme for silicon-containing electrical steel grades
DE60228218D1 (de) * 2001-04-09 2008-09-25 Ak Steel Properties Inc Verfahren und vorrichtung zur entfernung von wasserstoffperoxid aus beizlösungen
DE10160318A1 (de) * 2001-12-07 2003-06-18 Henkel Kgaa Verfahren zum Beizen von martensitischem oder ferritischem Edelstahl
US7396559B2 (en) * 2003-08-11 2008-07-08 General Motors Corporation Method of making an electrically conductive element for use in a fuel cell
US20050037935A1 (en) 2003-08-11 2005-02-17 Abd Elhamid Mahmoud H. Composition and method for surface treatment of oxidized metal
KR100580494B1 (ko) * 2004-04-27 2006-05-16 현대자동차주식회사 톤휠과 이를 이용한 휠 슬립 감지시스템
US7351295B2 (en) * 2006-03-23 2008-04-01 Pp6 Industries Ohio, Inc. Cleaning and polishing rusted iron-containing surfaces
DE102009038795A1 (de) * 2009-08-25 2011-05-05 Poligrat Gmbh Beizverfahren für Edelstahl
WO2021140612A1 (ja) * 2020-01-09 2021-07-15 Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 鋼板の酸洗方法及び酸洗装置
CN112247123A (zh) * 2020-10-24 2021-01-22 安徽省含山县皖中减速机械有限公司 一种改进减速机涡轮强度的处理工艺
CN115007538B (zh) * 2022-05-31 2024-06-21 天津市津荣天晟金属表面处理有限公司 铜基体上银基触头焊接后清洗设备

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Also Published As

Publication number Publication date
GB9807286D0 (en) 1998-06-03
EP0949354A1 (en) 1999-10-13
US6210491B1 (en) 2001-04-03
US6428625B1 (en) 2002-08-06

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PRESENTE PEDIDO DE PATENTE COMO: INVENCAO - DE ACORDO COM O ART. 8O DA LPI.