GB877240A - Method of pickling ferrous metal surfaces and pickling solution therefor - Google Patents

Method of pickling ferrous metal surfaces and pickling solution therefor

Info

Publication number
GB877240A
GB877240A GB917158A GB917158A GB877240A GB 877240 A GB877240 A GB 877240A GB 917158 A GB917158 A GB 917158A GB 917158 A GB917158 A GB 917158A GB 877240 A GB877240 A GB 877240A
Authority
GB
United Kingdom
Prior art keywords
pickling
solution
acid
hydrochloric
ferrous metal
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
GB917158A
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
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
Priority claimed from DES53981A external-priority patent/DE1133960B/en
Application filed by Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB877240A publication Critical patent/GB877240A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
    • 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
    • C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
    • 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
    • C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
    • C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
    • C23G1/061—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors nitrogen-containing compounds
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

A solution for pickling ferrous metals has a pH of from 2.6 to less than 3.0 and comprises hydrochloric or sulphuric acid or a mixture of hydrochloric or sulphuric acid with hydrochloric acid or a salt thereof, together with a carrier selected from hydrazine, hydroylamine and salts thereof. The solution is useful in cleaning boiler installations and may be employed as such or in a two-stage process, the carrier being introduced alone in the feed water in the first stage and acid then being added thereto subsequently. If the pickling solution contains hydrofluoric acid or a salt thereof (e.g. ammonium fluoride or bifluoride), the metal is both de-scaled and desilicified. If the solution does not contain hydrofluoric acid the metal may be desilicified after pickling by treatment with caustic soda solution.
GB917158A 1957-04-06 1958-03-21 Method of pickling ferrous metal surfaces and pickling solution therefor Expired GB877240A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES53033A DE1107046B (en) 1957-04-06 1957-04-06 Process for removing rust from objects and systems made of iron and / or steel, in particular for cleaning boiler systems and arrangement for carrying out the process
DES53981A DE1133960B (en) 1957-06-22 1957-06-22 Modification of the process for derusting objects and systems made of iron and / or steel, in particular pipe systems and boiler systems, into a process for simultaneous derusting and silica removal

Publications (1)

Publication Number Publication Date
GB877240A true GB877240A (en) 1961-09-13

Family

ID=25995373

Family Applications (1)

Application Number Title Priority Date Filing Date
GB917158A Expired GB877240A (en) 1957-04-06 1958-03-21 Method of pickling ferrous metal surfaces and pickling solution therefor

Country Status (5)

Country Link
CH (1) CH399123A (en)
DE (1) DE1107046B (en)
FR (1) FR1197830A (en)
GB (1) GB877240A (en)
SE (1) SE322392B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2429272A1 (en) * 1978-06-21 1980-01-18 Ppg Industries Inc PROCESS FOR REMOVING CORROSION PRODUCTS AND ASBESTOS FOR CLEANING ELECTRODES
USRE31198E (en) 1974-02-14 1983-04-05 Amchem Products, Inc. Method for cleaning aluminum at low temperatures
USRE32661E (en) * 1974-02-14 1988-05-03 Amchem Products, Inc. Cleaning aluminum at low temperatures
US20140334965A1 (en) * 2012-02-02 2014-11-13 Henkel Ag & Co. Kgaa Use of nitrogen compounds in the pickling of stainless steel

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1719650A (en) * 1929-07-02 George b
US1719167A (en) * 1927-01-11 1929-07-02 Vanderbilt Co R T Cleaning of metals, etc.
US1723923A (en) * 1928-03-14 1929-08-06 Carbide & Carbon Chem Corp Inhibitor
US2700004A (en) * 1953-07-15 1955-01-18 Cleveland Ind Res Inc Method of pickling iron and recovering pickling agent
US2769735A (en) * 1954-09-29 1956-11-06 Cleveland Ind Res Inc Method of pickling iron and recovering pickling agent
DE944339C (en) * 1955-04-26 1956-06-14 Bayer Ag Corrosion protection for antifreeze fluids and circulating coolants for internal combustion engines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31198E (en) 1974-02-14 1983-04-05 Amchem Products, Inc. Method for cleaning aluminum at low temperatures
USRE32661E (en) * 1974-02-14 1988-05-03 Amchem Products, Inc. Cleaning aluminum at low temperatures
FR2429272A1 (en) * 1978-06-21 1980-01-18 Ppg Industries Inc PROCESS FOR REMOVING CORROSION PRODUCTS AND ASBESTOS FOR CLEANING ELECTRODES
US20140334965A1 (en) * 2012-02-02 2014-11-13 Henkel Ag & Co. Kgaa Use of nitrogen compounds in the pickling of stainless steel
US9487741B2 (en) * 2012-02-02 2016-11-08 Henkel Ag & Co. Kgaa Use of nitrogen compounds in the pickling of stainless steel

Also Published As

Publication number Publication date
FR1197830A (en) 1959-12-03
SE322392B (en) 1970-04-06
DE1107046B (en) 1961-05-18
CH399123A (en) 1966-03-31

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