GB755559A - Improvements in the formation of vitreous enamel coatings on metallic surfaces - Google Patents

Improvements in the formation of vitreous enamel coatings on metallic surfaces

Info

Publication number
GB755559A
GB755559A GB11052/54A GB1105254A GB755559A GB 755559 A GB755559 A GB 755559A GB 11052/54 A GB11052/54 A GB 11052/54A GB 1105254 A GB1105254 A GB 1105254A GB 755559 A GB755559 A GB 755559A
Authority
GB
United Kingdom
Prior art keywords
phosphate
coating
foot
minutes
enamel
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
GB11052/54A
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.)
Pyrene Co Ltd
Original Assignee
Pyrene Co 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
Application filed by Pyrene Co Ltd filed Critical Pyrene Co Ltd
Publication of GB755559A publication Critical patent/GB755559A/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
    • C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D3/00—Chemical treatment of the metal surfaces prior to coating
    • 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
    • C23C22/74—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 for obtaining burned-in conversion coatings

Abstract

A metal surface is coated with a vitreous enamel by forming a phosphate coating on the surface, heating the surface and coating in an oxidizing atmosphere to form a mixed phosphate-oxide coating, the oxide being formed from the metal, and then applying and firing one or more layers of enamel. The metal, which may be ferrous or titanium, is treated with a phosphate-coating solution containing, e.g. zinc, manganese, sodium, potassium or ammonium phosphate, preferably one of the latter three, to which may be added oxidizing agents such as nitrates, nitrites, chlorates, bromates, sulphites, peroxides and organic nitro-compounds such as meta-nitrobenzene sulphonate, rinsed in cold water with or without subsequent drying as by a strong air blast, flash-drying or immersion in a water-absorbing organic solvent such as a ketone, e.g. acetone, an alcohol, e.g. isobutyl alcohol or a glycol, e.g. ethyl ether of ethylene glycol, and heated in air, oxygen or an atmosphere containing water to a temperature above 1100 DEG F., preferably 1200 DEG to 1550 DEG F., for three minutes. The total weight of the coating should be 0,4 to 12 grams per sq. foot, preferably 4 to 5 grams per sq. foot, of which the weight of phosphate (as PO4) should be 1 to 60mg. per sq. foot, preferably 20 to 25 mg. per sq. foot. Any known vitreous enamel coating may then be employed. The enamelling of mild steel panels by immersion in an aqueous acidic solution of monosodium phosphate, heating in air at 1350 DEG F. for three minutes and coating with a Ti-containing enamel slip and firing at 1480 DEG F. for four minutes is described by way of example as are phosphating solutions comprising (a) zinc dihydrogen phosphate and sodium chlorate, (b) ortho phosphoric acid and sodium 2,4-dinitrobenzene sulphonate and (c) zinc dihydrogen phosphate, sodium chlorate, ammonium fluoride and tetrasodium ethylene diamine tetraacetate.
GB11052/54A 1953-04-17 1954-04-14 Improvements in the formation of vitreous enamel coatings on metallic surfaces Expired GB755559A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US319249XA 1953-04-17 1953-04-17

Publications (1)

Publication Number Publication Date
GB755559A true GB755559A (en) 1956-08-22

Family

ID=21862137

Family Applications (2)

Application Number Title Priority Date Filing Date
GB11052/54A Expired GB755559A (en) 1953-04-17 1954-04-14 Improvements in the formation of vitreous enamel coatings on metallic surfaces
GB15420/56A Expired GB782259A (en) 1953-04-17 1956-05-17 Improvements in the formation of vitreous enamel coatings on metallic surfaces

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB15420/56A Expired GB782259A (en) 1953-04-17 1956-05-17 Improvements in the formation of vitreous enamel coatings on metallic surfaces

Country Status (6)

Country Link
BE (2) BE547657A (en)
CH (1) CH319249A (en)
DE (3) DE1011244B (en)
FR (2) FR1096270A (en)
GB (2) GB755559A (en)
NL (3) NL206945A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185587A (en) * 1960-11-14 1965-05-25 Smith Corp A O Method of preventing hydrogen penetration into steel
US3269876A (en) * 1962-12-13 1966-08-30 Rheem Mfg Co Glass-coated steel article
DE3635896A1 (en) * 1985-11-12 1987-05-14 Metallgesellschaft Ag PREPARATION OF METAL SURFACES FOR ENAMELING
EP0698675A1 (en) 1994-08-24 1996-02-28 Metallgesellschaft Aktiengesellschaft Preparing metal surfaces for enamelling

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2189815B (en) * 1986-03-24 1990-10-10 Permelec Electrode Ltd Titanium composite materials coated with calcium phosphate compound and process for production thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2076869A (en) * 1930-11-22 1937-04-13 Metal Finishing Res Corp Method of making enameled metal articles
DE817546C (en) * 1948-10-02 1951-10-18 Leonore Singewald Process for the formation of a uniformly dense iron oxide layer on iron or steel
DE835823C (en) * 1949-08-20 1952-04-03 Leonore Singewald Geb Singewal Process for the production of iron oxide layers on iron and steel as an adhesive base for subsequently applied protective coatings

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3185587A (en) * 1960-11-14 1965-05-25 Smith Corp A O Method of preventing hydrogen penetration into steel
US3269876A (en) * 1962-12-13 1966-08-30 Rheem Mfg Co Glass-coated steel article
DE3635896A1 (en) * 1985-11-12 1987-05-14 Metallgesellschaft Ag PREPARATION OF METAL SURFACES FOR ENAMELING
EP0698675A1 (en) 1994-08-24 1996-02-28 Metallgesellschaft Aktiengesellschaft Preparing metal surfaces for enamelling

Also Published As

Publication number Publication date
BE547657A (en)
CH319249A (en) 1957-02-15
DE1011244B (en) 1957-06-27
DE1034450B (en) 1958-07-17
DE1014816B (en) 1956-08-29
NL88673C (en)
NL206945A (en)
FR70333E (en) 1959-04-06
BE527772A (en) 1954-04-15
NL91293C (en)
GB782259A (en) 1957-09-04
FR1096270A (en) 1955-06-17

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