ES8104434A1 - Process and installation for the thermochemical pickling of articles of stainless steel. - Google Patents

Process and installation for the thermochemical pickling of articles of stainless steel.

Info

Publication number
ES8104434A1
ES8104434A1 ES493624A ES493624A ES8104434A1 ES 8104434 A1 ES8104434 A1 ES 8104434A1 ES 493624 A ES493624 A ES 493624A ES 493624 A ES493624 A ES 493624A ES 8104434 A1 ES8104434 A1 ES 8104434A1
Authority
ES
Spain
Prior art keywords
articles
thermochemical
pickling
installation
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.)
Expired
Application number
ES493624A
Other languages
Spanish (es)
Other versions
ES493624A0 (en
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.)
Compagnie de Construction Mecanique Sulzer
Original Assignee
Compagnie de Construction Mecanique Sulzer
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 Compagnie de Construction Mecanique Sulzer filed Critical Compagnie de Construction Mecanique Sulzer
Publication of ES493624A0 publication Critical patent/ES493624A0/en
Publication of ES8104434A1 publication Critical patent/ES8104434A1/en
Expired 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
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
    • 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
    • C23G1/28—Cleaning or pickling metallic material with solutions or molten salts with molten salts
    • C23G1/32—Heavy metals

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

The invention consists in moving the articles to be pickled directly from a molten soda bath (10) to an acidic bath (12) without an intermediate water rinsing stage. This procedure considerably simplifies the treatment of the aqueous effluents which no longer contain any hexavalent chromium.
ES493624A 1979-07-24 1980-07-23 Process and installation for the thermochemical pickling of articles of stainless steel. Expired ES8104434A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7919021A FR2461765A1 (en) 1979-07-24 1979-07-24 PROCESS AND INSTALLATION FOR THERMOCHEMICAL STRIPPING OF STAINLESS STEEL PARTS

Publications (2)

Publication Number Publication Date
ES493624A0 ES493624A0 (en) 1981-04-16
ES8104434A1 true ES8104434A1 (en) 1981-04-16

Family

ID=9228211

Family Applications (2)

Application Number Title Priority Date Filing Date
ES493624A Expired ES8104434A1 (en) 1979-07-24 1980-07-23 Process and installation for the thermochemical pickling of articles of stainless steel.
ES495055A Granted ES495055A0 (en) 1979-07-24 1980-09-15 INSTALLATION OF THERMAL CHEMICAL PICKLING OF STAINLESS STEEL PARTS

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES495055A Granted ES495055A0 (en) 1979-07-24 1980-09-15 INSTALLATION OF THERMAL CHEMICAL PICKLING OF STAINLESS STEEL PARTS

Country Status (4)

Country Link
EP (1) EP0023184A1 (en)
JP (1) JPS5620171A (en)
ES (2) ES8104434A1 (en)
FR (1) FR2461765A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0507006B1 (en) * 1991-04-02 1996-03-13 Unitika Ltd. Method of treating salt bath liquid
CN105483739A (en) * 2015-12-08 2016-04-13 无锡华工薄板有限公司 Concentration control system for strip steel acid washing tank

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1035596A (en) * 1965-06-28 1966-07-13 Allegheny Ludlum Steel Improvements in or relating to a process of descaling stainless steel
JPS5157641A (en) * 1974-11-18 1976-05-20 Nippon Steel Corp Sutenresukono datsusukeeruhoho

Also Published As

Publication number Publication date
FR2461765A1 (en) 1981-02-06
ES493624A0 (en) 1981-04-16
ES8107332A1 (en) 1981-08-16
FR2461765B1 (en) 1981-12-04
EP0023184A1 (en) 1981-01-28
ES495055A0 (en) 1981-08-16
JPS5620171A (en) 1981-02-25

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