GB2005721A - Method of partially enamelling articles of stainless steel - Google Patents

Method of partially enamelling articles of stainless steel

Info

Publication number
GB2005721A
GB2005721A GB7835541A GB7835541A GB2005721A GB 2005721 A GB2005721 A GB 2005721A GB 7835541 A GB7835541 A GB 7835541A GB 7835541 A GB7835541 A GB 7835541A GB 2005721 A GB2005721 A GB 2005721A
Authority
GB
United Kingdom
Prior art keywords
enamel
pickling
articles
enamelling
layer
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.)
Withdrawn
Application number
GB7835541A
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.)
Blasberg & Co KG Friedr GmbH
Apparatenfabriek Atag BV
Original Assignee
Blasberg & Co KG Friedr GmbH
Apparatenfabriek Atag BV
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 Blasberg & Co KG Friedr GmbH, Apparatenfabriek Atag BV filed Critical Blasberg & Co KG Friedr GmbH
Publication of GB2005721A publication Critical patent/GB2005721A/en
Withdrawn legal-status Critical Current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
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/16—Polishing
    • C25F3/22—Polishing of heavy metals
    • C25F3/24—Polishing of heavy metals of iron or steel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Coating With Molten Metal (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Specific Conveyance Elements (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

A method of partially enamelling articles of stainless steel in which areas of the articles are left un-enamelled comprises degreasing at least the areas to be enamelled and pretreating with an adhesion improving treatment prior to covering with enamel, firing the enamel and polishing the enamel-free surfaces. The adhesion improving treatment involves applying a layer of nickel, cobalt or copper then electroplating with an adhesion incurring layer of iron. A mean thickness of an electroplated iron layer in the range of from 5 mu to 20 mu is preferred. The iron layer is improved by picking before enamelling, either electrolytically or chemically. Removal of oxides, scales and intermediate layers from the enamel free areas after firing is performed by pickling in a sulphuric acid and phosphoric acid liquor. Improved removal is achieved by first anodically electrolytically pickling the article, then chemically pickling it and then alternately anodically and cathodically electrolytically pickling the article.
GB7835541A 1977-09-06 1978-09-04 Method of partially enamelling articles of stainless steel Withdrawn GB2005721A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7709807A NL7709807A (en) 1977-09-06 1977-09-06 METHOD OF ENAMELING A STAINLESS STEEL OBJECT AND ENAMELED STAINLESS STEEL OBJECT.

Publications (1)

Publication Number Publication Date
GB2005721A true GB2005721A (en) 1979-04-25

Family

ID=19829141

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7835541A Withdrawn GB2005721A (en) 1977-09-06 1978-09-04 Method of partially enamelling articles of stainless steel

Country Status (11)

Country Link
JP (1) JPS5488922A (en)
BE (1) BE870282A (en)
DE (1) DE2837012C3 (en)
DK (1) DK390878A (en)
ES (1) ES473095A1 (en)
FI (1) FI782723A (en)
FR (1) FR2402010A1 (en)
GB (1) GB2005721A (en)
NL (1) NL7709807A (en)
NO (1) NO783031L (en)
SE (1) SE7809314L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2844282A1 (en) * 2002-09-06 2004-03-12 Usinor Steel object provided with protective composite coating of enamel and copper or a copper alloy and a final upper layer of enamel, notably for household appliances
IT202000002725A1 (en) * 2020-02-12 2021-08-12 D M C Srl METHOD OF OPAQUE ENAMELING OF METALLIC OBJECTS AND PRODUCT OBTAINED THUS

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2546533A1 (en) * 1983-05-26 1984-11-30 Entrepots Menagers Process for obtaining articles made of enamelled nonoxidisable metal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2844282A1 (en) * 2002-09-06 2004-03-12 Usinor Steel object provided with protective composite coating of enamel and copper or a copper alloy and a final upper layer of enamel, notably for household appliances
IT202000002725A1 (en) * 2020-02-12 2021-08-12 D M C Srl METHOD OF OPAQUE ENAMELING OF METALLIC OBJECTS AND PRODUCT OBTAINED THUS

Also Published As

Publication number Publication date
NO783031L (en) 1979-03-07
FR2402010A1 (en) 1979-03-30
ES473095A1 (en) 1979-04-01
DK390878A (en) 1979-03-07
FI782723A (en) 1979-03-07
DE2837012C3 (en) 1980-10-16
SE7809314L (en) 1979-03-07
DE2837012A1 (en) 1979-03-15
DE2837012B2 (en) 1980-02-28
BE870282A (en) 1979-03-07
JPS5488922A (en) 1979-07-14
NL7709807A (en) 1979-03-08

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)