GB886361A - Metal treatment - Google Patents

Metal treatment

Info

Publication number
GB886361A
GB886361A GB32850/59A GB3285059A GB886361A GB 886361 A GB886361 A GB 886361A GB 32850/59 A GB32850/59 A GB 32850/59A GB 3285059 A GB3285059 A GB 3285059A GB 886361 A GB886361 A GB 886361A
Authority
GB
United Kingdom
Prior art keywords
citric
nickel
glycolic acid
minutes
per square
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
GB32850/59A
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.)
Pfizer Inc
Original Assignee
Pfizer Inc
Charles Pfizer and Co 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 Pfizer Inc, Charles Pfizer and Co Inc filed Critical Pfizer Inc
Publication of GB886361A publication Critical patent/GB886361A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23DENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D3/00Chemical treatment of the metal surfaces prior to coating
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/08Iron or steel
    • C23G1/088Iron or steel solutions containing organic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemically Coating (AREA)

Abstract

Ferrous metal surfaces are cleaned with an aqueous solution containing 1-20% citric or glycolic acid at 160-212 DEG F. for 5-30 minutes. Nickel is deposited and then a coating of porcelain enamel which is dried at 250-400 DEG F. and fired for 3-6 minutes at 1300-1550 DEG F. Citric acid pickled surfaces are given a nickel deposit of 0,03-0,1 grams per square foot while those pickled in glycolic acid receive a deposit of 0,12-0,36 grams per square foot, the deposition being performed in a solution of nickel sulphate at a pH of 3,2-3,6. The citric of glycolic acid solution may contain 1-4% of phosphoric acid.
GB32850/59A 1958-10-20 1959-09-28 Metal treatment Expired GB886361A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US886361XA 1958-10-20 1958-10-20

Publications (1)

Publication Number Publication Date
GB886361A true GB886361A (en) 1962-01-03

Family

ID=22212517

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32850/59A Expired GB886361A (en) 1958-10-20 1959-09-28 Metal treatment

Country Status (2)

Country Link
FR (1) FR1237493A (en)
GB (1) GB886361A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2739396B1 (en) * 1995-09-28 1997-10-24 Lorraine Laminage PROCESS FOR PREPARING THE METAL SURFACE OF AN OBJECT, IN PARTICULAR IN STEEL SHEET, FOR ENAMELING IN DIRECT MODE
FR2761082B1 (en) 1997-03-21 1999-04-30 Lorraine Laminage METHOD FOR PREPARING AN ENAMELLED STEEL SHEET OBJECT IN DIRECT MODE

Also Published As

Publication number Publication date
FR1237493A (en) 1960-07-29

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