GB814787A - Improvements in or relating to the production of porcelain or vitreous enamel coatings on aluminium - Google Patents

Improvements in or relating to the production of porcelain or vitreous enamel coatings on aluminium

Info

Publication number
GB814787A
GB814787A GB15533/57A GB1553357A GB814787A GB 814787 A GB814787 A GB 814787A GB 15533/57 A GB15533/57 A GB 15533/57A GB 1553357 A GB1553357 A GB 1553357A GB 814787 A GB814787 A GB 814787A
Authority
GB
United Kingdom
Prior art keywords
aluminium
rinsed
water
porcelain
relating
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
GB15533/57A
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.)
Henkel Corp
Original Assignee
Amchem Products Inc
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 Amchem Products Inc filed Critical Amchem Products Inc
Publication of GB814787A publication Critical patent/GB814787A/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
    • C23C22/05—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 using aqueous solutions
    • C23C22/06—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 using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/34—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
    • C23C22/37—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also hexavalent chromium compounds
    • C23C22/38—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 using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also hexavalent chromium compounds containing also phosphates
    • 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
    • C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D3/00—Chemical treatment of the metal surfaces prior to coating

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)
  • Chemical Treatment Of Metals (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

Prior to porcelain or vitreous enamelling, an aluminium or aluminium-base alloy surface is cleaned with an inhibited alkali solution having a pH below 12, deoxidized, coated with a chromate conversion coating and rinsed. Specifically, the surface is cleaned with a soda ash/caustic soda solution inhibited with trisodium phosphate, rinsed with water, deoxidized with phosphoric acid, rinsed with water, chromate-coated using a solution containing hexavalent chromium ions and fluoride ions (of which Examples are given), rinsed with water, optionally dried, and finally enamelled. Three aluminium alloys given by way of example contain, in per cent by weight: <TABS:0814787/II/1> Specification 769,143 is referred to.
GB15533/57A 1956-08-16 1957-05-16 Improvements in or relating to the production of porcelain or vitreous enamel coatings on aluminium Expired GB814787A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US604344A US2858245A (en) 1956-08-16 1956-08-16 Process for enameling aluminum

Publications (1)

Publication Number Publication Date
GB814787A true GB814787A (en) 1959-06-10

Family

ID=24419231

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15533/57A Expired GB814787A (en) 1956-08-16 1957-05-16 Improvements in or relating to the production of porcelain or vitreous enamel coatings on aluminium

Country Status (3)

Country Link
US (1) US2858245A (en)
DE (1) DE1044556B (en)
GB (1) GB814787A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404046A (en) * 1964-09-25 1968-10-01 Hooker Chemical Corp Chromating of zinc and aluminum and composition therefor
US3607455A (en) * 1968-09-09 1971-09-21 Bernice M Renshaw Method for improving paint adhesion on stainless steel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2137988A (en) * 1936-10-21 1938-11-22 Heresite & Chemical Company Adherent aluminum compound
US2544139A (en) * 1947-07-01 1951-03-06 Du Pont Process for enameling aluminumrich alloys
US2507956A (en) * 1947-11-01 1950-05-16 Lithographic Technical Foundat Process of coating aluminum
US2768103A (en) * 1952-03-18 1956-10-23 Heintz Mfg Co Method for coating metals
DE919450C (en) * 1952-12-18 1954-10-21 Deinert & Co Spezialbetr E Fue Process for the production of thick chrome coatings on aluminum and aluminum alloys, especially magnesium-containing aluminum alloys

Also Published As

Publication number Publication date
US2858245A (en) 1958-10-28
DE1044556B (en) 1958-11-20

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