GB1339565A - Method and apparatus for passivating a metallic surface - Google Patents

Method and apparatus for passivating a metallic surface

Info

Publication number
GB1339565A
GB1339565A GB4858370A GB1339565DA GB1339565A GB 1339565 A GB1339565 A GB 1339565A GB 4858370 A GB4858370 A GB 4858370A GB 1339565D A GB1339565D A GB 1339565DA GB 1339565 A GB1339565 A GB 1339565A
Authority
GB
United Kingdom
Prior art keywords
liquid
metallic surface
zinc
coated
aperture
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
GB4858370A
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.)
British Steel Corp
Original Assignee
British Steel Corp
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 British Steel Corp filed Critical British Steel Corp
Publication of GB1339565A publication Critical patent/GB1339565A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/08—Plant for applying liquids or other fluent materials to objects
    • B05B5/14—Plant for applying liquids or other fluent materials to objects specially adapted for coating continuously moving elongated bodies, e.g. wires, strips, pipes
    • 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
    • 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
    • C23C22/76—Applying the liquid by spraying

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

1339565 Electrostatic field coating apparatus BRITISH STEEL CORP 30 Sept 1971 [13 Oct 1970] 48583/70 Heading D1L In a process for improving the adhesion of paint to a metallic surface with a liquid reactive with the metal, the liquid is applied to the surface through an electrostatic field in the form of atomised liquid particles. The liquid is directed through an aperture in a container, the operative containing an electrode, between which and the metallic surface an electric discharge of high intensity is maintained. The liquid is preferably directed by subjecting the liquid in the container to a gas pressure. The liquid is preferably an aqueous solution e.g. a phosphating or chromating solution and contains a liquid freezing point depressant e.g. diethylene glycol. The metal may be aluminium, copper, tin plate, an aluminium zinc alloy, or a substrate coated with a metallic oxide such as alumina or silica. Preferably the metallic surface is iron coated with zinc. In the preferred embodiment, as a continuous process in a vacuum chamber, the liquid treatment is combined with the deposition of a molten metal onto the metallic surface, and the subsequent painting of the treated surface. As shown, a mild steel strip having opposite sides 3 and 4, enters vacuum chamber 1, through seal 5 and exits via seal 6. At 14 and 15, molten zinc is condensed on surfaces 4 and 3 respectively. At 16 and 24, the treating liquids are applied respectively to the zinc coated surfaces 4 and 3. In each case the liquid is projected from reservoir 23, under atmospheric pressure, via tubular portion 20, and aperture 21 onto the coated surface. From aperture 21, projects axially extending electrode 22. The strip is painted at 25, and the coating cured at 26, by an electron beam.
GB4858370A 1970-10-13 1971-09-30 Method and apparatus for passivating a metallic surface Expired GB1339565A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4858370 1970-10-13

Publications (1)

Publication Number Publication Date
GB1339565A true GB1339565A (en) 1973-12-05

Family

ID=10449130

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4858370A Expired GB1339565A (en) 1970-10-13 1971-09-30 Method and apparatus for passivating a metallic surface

Country Status (8)

Country Link
US (1) US3775193A (en)
AU (1) AU3456371A (en)
BE (1) BE773766A (en)
DE (1) DE2151046A1 (en)
FR (1) FR2110402B1 (en)
GB (1) GB1339565A (en)
IT (1) IT942672B (en)
NL (1) NL7114054A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19960465A1 (en) * 1999-12-15 2001-06-21 Alcatel Sa Flat conductor ribbon cable
DE102007052770A1 (en) 2007-11-02 2009-05-07 Hydro Aluminium Deutschland Gmbh Method and device for generating a conversion layer
ITUD20090008A1 (en) * 2009-01-14 2010-07-15 Giovanni Defant MACHINE TO BE INSERTED IN A PROCESS LINE OF CONTINUOUS GALVANIZING OF THE SHEET THAT APPLIES TO THE GALVANIZED SHEET THE PASSIVATING OR ANTIOXIDANT OR PROTECTIVE SUBSTANCE OF THE ZINC WITH ELECTROSTATIC METHOD

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768104A (en) * 1952-03-25 1956-10-23 Heintz Mfg Co Method for coating iron
US2826451A (en) * 1954-11-01 1958-03-11 Sedlacsik John Spray device for electrostatic deposition of a fluid
GB1218365A (en) * 1968-04-23 1971-01-06 Steel Co Of Wales Ltd Improvements in and relating to the continuous casting of steel strip
US3594214A (en) * 1969-04-04 1971-07-20 United States Steel Corp Method of applying a zinc coating to a sheet-steel base
US3595687A (en) * 1969-08-04 1971-07-27 Ford Motor Co Divinyl compounds from monoepoxides and painting process

Also Published As

Publication number Publication date
AU3456371A (en) 1973-04-19
US3775193A (en) 1973-11-27
BE773766A (en) 1972-01-31
DE2151046A1 (en) 1972-04-20
NL7114054A (en) 1972-04-17
FR2110402B1 (en) 1975-02-07
FR2110402A1 (en) 1972-06-02
IT942672B (en) 1973-04-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee