GB1294490A - Chromating metal surfaces - Google Patents

Chromating metal surfaces

Info

Publication number
GB1294490A
GB1294490A GB23255/70A GB2325570A GB1294490A GB 1294490 A GB1294490 A GB 1294490A GB 23255/70 A GB23255/70 A GB 23255/70A GB 2325570 A GB2325570 A GB 2325570A GB 1294490 A GB1294490 A GB 1294490A
Authority
GB
United Kingdom
Prior art keywords
solution
metal
metal surfaces
chromating
chubb
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
GB23255/70A
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.)
Chubb Fire Ltd
Original Assignee
Chubb Fire Security Ltd
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 DE19691926769 external-priority patent/DE1926769C3/en
Application filed by Chubb Fire Security Ltd filed Critical Chubb Fire Security Ltd
Publication of GB1294490A publication Critical patent/GB1294490A/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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
    • 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

Abstract

1294490 Chromating metal surfaces CHUBB FIRE SECURITY Ltd 13 May 1970 [24 May 1969] 23255/70 Addition to 1159420 Heading C7U A Zn, Fe or Al surface is so contacted with a solution of chromic and hydrofluoric acids that not more than 50% of the solution applied runs back into the bath and the solution remaining on the surface contains from 0À06 to 3 g/sq.m CrO 3 and 0À1 to 6 g/sq.m HF, the duration and temperature being such that from 0À2 to 2 g/sq.m of metal is etched from the surface. The solution may be dried to form the chromate coating or the solution may be washed off and a solution containing hexavalent chromium applied. The metal surface may first be degreased in solutions of NaOH and Na 5 P 3 O 10 or chlorinate hydrocarbons.
GB23255/70A 1969-05-24 1970-05-13 Chromating metal surfaces Expired GB1294490A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691926769 DE1926769C3 (en) 1969-05-24 Process for chemical surface treatment of steel, galvanized steel, zinc and aluminum

Publications (1)

Publication Number Publication Date
GB1294490A true GB1294490A (en) 1972-10-25

Family

ID=5735215

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23255/70A Expired GB1294490A (en) 1969-05-24 1970-05-13 Chromating metal surfaces

Country Status (10)

Country Link
US (1) US3632447A (en)
AT (1) AT293130B (en)
BE (1) BE742605A (en)
BR (1) BR7019226D0 (en)
CS (1) CS167286B2 (en)
ES (1) ES377462A1 (en)
FR (1) FR2043646A1 (en)
GB (1) GB1294490A (en)
NL (1) NL7007232A (en)
SE (1) SE356080B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2242908A1 (en) * 1972-08-31 1974-03-14 Metallgesellschaft Ag METHOD FOR CHEMICAL SURFACE TREATMENT OF ALUMINUM
SE381289B (en) * 1973-06-21 1975-12-01 Nyby Bruk Ab TWO-STEP BETTING PROCEDURE
AU528865B2 (en) * 1980-12-01 1983-05-19 Yoshida Kogyo K.K. Forming protective surface film on aluminum surfaces
US4432846A (en) * 1982-12-10 1984-02-21 National Steel Corporation Cleaning and treatment of etched cathode aluminum capacitor foil
US8142841B2 (en) * 2003-12-18 2012-03-27 Henkel Kgaa Apparatus and methods for deoxidizing metal surfaces
AU2003297306A1 (en) * 2003-12-18 2005-08-03 Henkel Kommanditgesellschaft Auf Aktien Apparatus and methods for deoxidizing metal surfaces
JP5356616B1 (en) * 2012-11-27 2013-12-04 日新製鋼株式会社 Method for producing hot-dip Zn alloy-plated steel sheet
CN106521528A (en) * 2016-11-25 2017-03-22 遵义恒佳铝业有限公司 Surface treatment process for aluminum rods

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733999A (en) * 1956-02-07 Pickling
US3197340A (en) * 1960-10-05 1965-07-27 Conversion Chem Corp Composition and method for cleaning aluminum castings
US3178305A (en) * 1962-05-04 1965-04-13 United States Steel Corp Method of making galvanized sheet steel coated on one side
US3367799A (en) * 1963-10-08 1968-02-06 Army Usa Process for cleaning aluminum

Also Published As

Publication number Publication date
CS167286B2 (en) 1976-04-29
DE1926769A1 (en) 1970-12-03
NL7007232A (en) 1970-11-26
ES377462A1 (en) 1972-07-01
BR7019226D0 (en) 1973-02-22
BE742605A (en) 1970-05-14
SE356080B (en) 1973-05-14
FR2043646A1 (en) 1971-02-19
AT293130B (en) 1971-09-27
DE1926769B2 (en) 1975-08-21
US3632447A (en) 1972-01-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees