GB713438A - Improvements relating to the phosphate coating of metals - Google Patents

Improvements relating to the phosphate coating of metals

Info

Publication number
GB713438A
GB713438A GB691551A GB691551A GB713438A GB 713438 A GB713438 A GB 713438A GB 691551 A GB691551 A GB 691551A GB 691551 A GB691551 A GB 691551A GB 713438 A GB713438 A GB 713438A
Authority
GB
United Kingdom
Prior art keywords
solution
metals
centrifuge
improvements relating
spraying
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
GB691551A
Inventor
Laurence Baker
Montagu Hyams
Leslie Arthur Parkes
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
Priority to GB691551A priority Critical patent/GB713438A/en
Priority to DEP6304A priority patent/DE874235C/en
Publication of GB713438A publication Critical patent/GB713438A/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
    • C23C22/86—Regeneration of coating baths

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)

Abstract

Insoluble matter formed in the solution, when phosphating metal articles by spraying, is removed therefrom by substantially continuous circulation of the solution through a circuit which is separate from the spraying circuit and contains a centrifuge. The latter is preferably of the type having a removable bowl or tube on which the solid matter is deposited. The temperature of the solution passing through the centrifuge may be reduced, or the free acid content increased, or both, e.g. by adding phosphoric acid or a primary metal phosphate in cold aqueous solution.
GB691551A 1951-03-22 1951-03-22 Improvements relating to the phosphate coating of metals Expired GB713438A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB691551A GB713438A (en) 1951-03-22 1951-03-22 Improvements relating to the phosphate coating of metals
DEP6304A DE874235C (en) 1951-03-22 1951-10-11 Process for applying phosphate coatings to metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB691551A GB713438A (en) 1951-03-22 1951-03-22 Improvements relating to the phosphate coating of metals

Publications (1)

Publication Number Publication Date
GB713438A true GB713438A (en) 1954-08-11

Family

ID=9823156

Family Applications (1)

Application Number Title Priority Date Filing Date
GB691551A Expired GB713438A (en) 1951-03-22 1951-03-22 Improvements relating to the phosphate coating of metals

Country Status (2)

Country Link
DE (1) DE874235C (en)
GB (1) GB713438A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040369B1 (en) * 1980-05-12 1984-02-15 Toyota Jidosha Kabushiki Kaisha Apparatus for the surface treatment of an object

Also Published As

Publication number Publication date
DE874235C (en) 1953-04-23

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