NL7708992A - Pickling bath for steels - contg. acid and ferric chloride - Google Patents

Pickling bath for steels - contg. acid and ferric chloride

Info

Publication number
NL7708992A
NL7708992A NL7708992A NL7708992A NL7708992A NL 7708992 A NL7708992 A NL 7708992A NL 7708992 A NL7708992 A NL 7708992A NL 7708992 A NL7708992 A NL 7708992A NL 7708992 A NL7708992 A NL 7708992A
Authority
NL
Netherlands
Prior art keywords
fecl3
acid
pickling
steels
bath
Prior art date
Application number
NL7708992A
Other languages
Dutch (nl)
Original Assignee
Beugin Procedes Sa
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 Procedes Sa filed Critical Beugin Procedes Sa
Priority to NL7708992A priority Critical patent/NL7708992A/en
Publication of NL7708992A publication Critical patent/NL7708992A/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

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.
NL7708992A 1977-08-15 1977-08-15 Pickling bath for steels - contg. acid and ferric chloride NL7708992A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7708992A NL7708992A (en) 1977-08-15 1977-08-15 Pickling bath for steels - contg. acid and ferric chloride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7708992A NL7708992A (en) 1977-08-15 1977-08-15 Pickling bath for steels - contg. acid and ferric chloride

Publications (1)

Publication Number Publication Date
NL7708992A true NL7708992A (en) 1979-02-19

Family

ID=19829018

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7708992A NL7708992A (en) 1977-08-15 1977-08-15 Pickling bath for steels - contg. acid and ferric chloride

Country Status (1)

Country Link
NL (1) NL7708992A (en)

Similar Documents

Publication Publication Date Title
ES471061A1 (en) Controlling stainless steel pickling solution by hydrogen peroxide and sulphuric acid addition
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.
JPS56501886A (en)
Elliott Regeneration of steelworks hydrochloric acid pickle liquor
KR910003127A (en) How lead gold removes thallium from now
ES8406557A1 (en) Method of quenching ferrous alloys in an aqueous medium
JPS55141596A (en) Improvement of soldering property of cold rolled stainless steel strip treated by bright annealing
JPS55119493A (en) Removing method for hexavalent chromium
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)
JPS57127494A (en) Method for removal of manganese scale
ATE8211T1 (en) PROCESS FOR TREATMENT OF WATER DISPOSABLE FROM FLUSHING OF METAL PIECES THAT HAVE BEEN SUBJECTED TO STRIPPING WITH STRONG ACID.
Trabanelli On Some Problems of Acid Corrosion Inhibition

Legal Events

Date Code Title Description
BV The patent application has lapsed