FR2399488A1 - Pickling bath for steels - contg. acid and ferric chloride - Google Patents

Pickling bath for steels - contg. acid and ferric chloride

Info

Publication number
FR2399488A1
FR2399488A1 FR7724443A FR7724443A FR2399488A1 FR 2399488 A1 FR2399488 A1 FR 2399488A1 FR 7724443 A FR7724443 A FR 7724443A FR 7724443 A FR7724443 A FR 7724443A FR 2399488 A1 FR2399488 A1 FR 2399488A1
Authority
FR
France
Prior art keywords
fecl3
acid
pickling
steels
bath
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.)
Granted
Application number
FR7724443A
Other languages
French (fr)
Other versions
FR2399488B3 (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.)
Beugin SA Expl Procedes
Original Assignee
Beugin SA Expl Procedes
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 Beugin SA Expl Procedes filed Critical Beugin SA Expl Procedes
Priority to FR7724443A priority Critical patent/FR2399488A1/en
Priority to BE180244A priority patent/BE857873A/en
Priority to IT2872577A priority patent/IT1087076B/en
Publication of FR2399488A1 publication Critical patent/FR2399488A1/en
Application granted granted Critical
Publication of FR2399488B3 publication Critical patent/FR2399488B3/fr
Granted 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
    • 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

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

Steel is pickled by first contacting with a suitable acid to which FeCl3 has been added. The steel is placed successively in a series of communicating baths of increasing concn. The bath is then regenerated by removal of ferrous and ferric salts resulting from the pickling treatment and adding in FeCl3 to the bath. The FeCl3 added in the liq. state at a rate of 150-200 l FeCl3/1000 l of acid/FeCl3 mixt., the acid pref. being 5-20% HCl. The bath is kept at 75-90 degrees C during pickling. The pickling time is =3mins. No mechanical treatment to remove scale before pickling is required. Special steels can be pickled in the same baths as or dinary steels without expensive plant.
FR7724443A 1977-08-01 1977-08-01 Pickling bath for steels - contg. acid and ferric chloride Granted FR2399488A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7724443A FR2399488A1 (en) 1977-08-01 1977-08-01 Pickling bath for steels - contg. acid and ferric chloride
BE180244A BE857873A (en) 1977-08-01 1977-08-17 CHEMICAL STEEL PICKLING PROCESS
IT2872577A IT1087076B (en) 1977-08-01 1977-10-18 STEEL PICKLING PROCEDURE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7724443A FR2399488A1 (en) 1977-08-01 1977-08-01 Pickling bath for steels - contg. acid and ferric chloride

Publications (2)

Publication Number Publication Date
FR2399488A1 true FR2399488A1 (en) 1979-03-02
FR2399488B3 FR2399488B3 (en) 1980-06-13

Family

ID=9194374

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7724443A Granted FR2399488A1 (en) 1977-08-01 1977-08-01 Pickling bath for steels - contg. acid and ferric chloride

Country Status (3)

Country Link
BE (1) BE857873A (en)
FR (1) FR2399488A1 (en)
IT (1) IT1087076B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0792949A1 (en) * 1996-02-27 1997-09-03 USINOR SACILOR Société Anonyme Process for pickling a steel workpiece, in particular stainless steel sheet strip

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0792949A1 (en) * 1996-02-27 1997-09-03 USINOR SACILOR Société Anonyme Process for pickling a steel workpiece, in particular stainless steel sheet strip

Also Published As

Publication number Publication date
IT1087076B (en) 1985-05-31
BE857873A (en) 1977-12-16
FR2399488B3 (en) 1980-06-13

Similar Documents

Publication Publication Date Title
ES471061A1 (en) Controlling stainless steel pickling solution by hydrogen peroxide and sulphuric acid addition
GB1440994A (en) Acid pickling solution for treating metals
JPS5559886A (en) Treating method for waste water containing iron-cyano complexes
ES8400779A1 (en) Corrosion inhibition in sintered stainless steel.
FR2399488A1 (en) Pickling bath for steels - contg. acid and ferric chloride
NL7708992A (en) Pickling bath for steels - contg. acid and ferric chloride
JPS5212767A (en) Method for continuous removal of sludge in chemical treating liquor
ATE75786T1 (en) PROCESS FOR TREATMENT OF COLD ROLLED STAINLESS STEEL SHEET AND STRIP.
GB1196495A (en) Improvements in or relating to the Dissolution of Nickel Coatings
ES377462A1 (en) Metal-treating process
FR2347457A2 (en) Treating phosphated metal surfaces - with soln. contg. (1)-phenyl-vinyl-phosphonic acid-(1) or (co)polymer, buffered with fumaric acid or succinic acid
ES2102480T3 (en) PROCEDURE FOR STRIPPING STEEL MATERIALS IN A CONTINUOUS TREATMENT LINE.
JPS5547318A (en) Pretreating method for annealing of cr stainless steel
Elliott Regeneration of steelworks hydrochloric acid pickle liquor
KR910003127A (en) How lead gold removes thallium from now
JPS55141596A (en) Improvement of soldering property of cold rolled stainless steel strip treated by bright annealing
JPS55119493A (en) Removing method for hexavalent chromium
GB1242761A (en) Improvements in or relating to the removal of scale from scaled ferrous bodies
AU243327B2 (en) A process of recovering hydrochloric acid and ferrous chloride from pickle bath liquor used in the pickling of steel
JPS57185991A (en) Corrosion inhibitor for stainless steel
JPS55114390A (en) Treatment of organic acid washing waste water
SE7712094L (en) WAY TO TREAT A SURFACE, AS WELL AS A SOLUTION FOR THE SET'S IMPLEMENTATION
ES462191A1 (en) Procedure of decapado of the steels. (Machine-translation by Google Translate, not legally binding)
Snavely Removal of dissolved oxygen from water
JPS57127494A (en) Method for removal of manganese scale

Legal Events

Date Code Title Description
ST Notification of lapse