ZA9710983B - Method for pickling products in a metal alloy containing iron and in titanium and alloys thereof. - Google Patents

Method for pickling products in a metal alloy containing iron and in titanium and alloys thereof.

Info

Publication number
ZA9710983B
ZA9710983B ZA9710983A ZA9710983A ZA9710983B ZA 9710983 B ZA9710983 B ZA 9710983B ZA 9710983 A ZA9710983 A ZA 9710983A ZA 9710983 A ZA9710983 A ZA 9710983A ZA 9710983 B ZA9710983 B ZA 9710983B
Authority
ZA
South Africa
Prior art keywords
titanium
alloys
containing iron
pickling
acid
Prior art date
Application number
ZA9710983A
Inventor
Franco Mancia
Sandro Fortunati
Ezio Novato
Original Assignee
Ct Sviluppo Materiali Spa
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 Ct Sviluppo Materiali Spa filed Critical Ct Sviluppo Materiali Spa
Publication of ZA9710983B publication Critical patent/ZA9710983B/en

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
    • 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
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/10—Other heavy metals
    • C23G1/106—Other heavy metals refractory metals
    • 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
    • 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
    • C25F1/08—Refractory metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

A method for pickling products made of metal alloys containing iron, and products made of titanium and alloys thereof, in the absence of nitric acid as an oxidising agent, characterised by the fact that the product to be pickled is submerged in the anolyte (as the pickling solution) of an electrolytic cell in which the anolyte is made up of an aqueous solution of sulphuric acid, of hydrofluoric acid and optionally of phosphoric acid and hydrochloric acid, and with the catholyte made up of an aqueous solution of sulphuric acid and the oxidising agent in the pickling solution being the ferric ion, or the ions titanium(III) and titanium(IV).
ZA9710983A 1996-12-09 1997-12-08 Method for pickling products in a metal alloy containing iron and in titanium and alloys thereof. ZA9710983B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT96RM000849A IT1288407B1 (en) 1996-12-09 1996-12-09 METHOD FOR PICKLING METAL ALLOY PRODUCTS CONTAINING IRON AND TITANIUM AND ITS ALLOYS

Publications (1)

Publication Number Publication Date
ZA9710983B true ZA9710983B (en) 1998-06-15

Family

ID=11404582

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA9710983A ZA9710983B (en) 1996-12-09 1997-12-08 Method for pickling products in a metal alloy containing iron and in titanium and alloys thereof.

Country Status (9)

Country Link
EP (1) EP0960221B1 (en)
AT (1) ATE214436T1 (en)
AU (1) AU7847898A (en)
DE (1) DE69711090T2 (en)
ES (1) ES2178023T3 (en)
IT (1) IT1288407B1 (en)
TW (1) TW451001B (en)
WO (1) WO1998026111A1 (en)
ZA (1) ZA9710983B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1297076B1 (en) 1997-11-24 1999-08-03 Acciai Speciali Terni Spa METHOD FOR PICKLING OF STEEL PRODUCTS
IT1302202B1 (en) 1998-09-11 2000-07-31 Henkel Kgaa ELECTROLYTIC PICKLING PROCESS WITH SOLUTIONS FREE FROM ACIDONITRICO.
DE19850524C2 (en) * 1998-11-03 2002-04-04 Eilenburger Elektrolyse & Umwelttechnik Gmbh Nitrate-free recycling pickling process for stainless steels
AT406486B (en) * 1998-12-22 2000-05-25 Andritz Patentverwaltung METHOD FOR STAINLESSING STAINLESS STEEL
IT1312556B1 (en) * 1999-05-03 2002-04-22 Henkel Kgaa STAINLESS STEEL PICKLING PROCESS IN THE ABSENCE OF ACIDONITRICO AND IN THE PRESENCE OF CHLORIDE IONS
AU2003233062A1 (en) 2002-10-15 2004-05-04 Henkel Kommanditgesellschaft Auf Aktien Pickling or brightening/passivating solution and process for steel and stainless steel
EP1980650A1 (en) * 2007-04-05 2008-10-15 Kerma S.A. Pickling composition free from nitrates and peroxides, and method using such a composition
CN103572303B (en) * 2013-10-24 2015-11-25 中联重机股份有限公司 A kind of steel chemical pre-processing method and pickle solution used
CN111057935B (en) * 2019-12-25 2021-04-02 浦项(张家港)不锈钢股份有限公司 Preparation method of heat-resistant stainless steel
CN113788520A (en) * 2021-10-08 2021-12-14 北京首钢吉泰安新材料有限公司 Iron-chromium-aluminum pickling process, wastewater treatment method and wastewater treatment device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50133125A (en) * 1974-04-10 1975-10-22
DE3937438C2 (en) * 1989-02-23 1998-01-29 Wilfried Simmer Steel pickling process
FR2650303B1 (en) * 1989-07-26 1993-12-10 Ugine Aciers Chatillon Gueugnon PROCESS FOR ACIDIC STRIPPING OF METAL PRODUCTS CONTAINING TITANIUM OR AT LEAST ONE CHEMICAL ELEMENT OF THE TITANIUM FAMILY
JPH04362183A (en) * 1991-06-07 1992-12-15 Nippon Paint Co Ltd Method for regenerating aluminum surface cleaning bath
IT1282979B1 (en) * 1996-05-09 1998-04-03 Novamax Itb S R L PROCEDURE FOR STEEL PICKLING IN WHICH THE OXIDATION OF THE FERROUS ION IS CARRIED OUT BY ELECTROCHEMISTRY

Also Published As

Publication number Publication date
TW451001B (en) 2001-08-21
ITRM960849A0 (en) 1996-12-09
EP0960221B1 (en) 2002-03-13
ITRM960849A1 (en) 1998-06-09
ATE214436T1 (en) 2002-03-15
WO1998026111A1 (en) 1998-06-18
AU7847898A (en) 1998-07-03
DE69711090T2 (en) 2003-07-24
EP0960221A1 (en) 1999-12-01
ES2178023T3 (en) 2002-12-16
IT1288407B1 (en) 1998-09-22
DE69711090D1 (en) 2002-04-18

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