GB1065069A - Improvements relating to the painting of metals by electrodeposition - Google Patents

Improvements relating to the painting of metals by electrodeposition

Info

Publication number
GB1065069A
GB1065069A GB1040266A GB1040266A GB1065069A GB 1065069 A GB1065069 A GB 1065069A GB 1040266 A GB1040266 A GB 1040266A GB 1040266 A GB1040266 A GB 1040266A GB 1065069 A GB1065069 A GB 1065069A
Authority
GB
United Kingdom
Prior art keywords
solution
phosphate
phosphating
cleaning
coating
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
GB1040266A
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 GB1065069A publication Critical patent/GB1065069A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/20—Pretreatment
    • 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
    • C23C22/78—Pretreatment of the material to be coated
    • 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
    • C23C22/78—Pretreatment of the material to be coated
    • C23C22/80—Pretreatment of the material to be coated with solutions containing titanium or zirconium compounds
    • 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
    • C23C22/82—After-treatment
    • C23C22/83—Chemical after-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

Before electrodepositing a coating of paint on a metal surface, the surface is cleaned by treatment with an aqueous alkaline solution which contains alkali borate but is substantially free of silicate and is then treated with a zinc phosphate solution to form a phosphate coating. Preferably the cleaning solution, which is applied at 50 to 70 DEG C. by spraying, contains a non-ionic surface active agent, such as a condensation product of ethylene oxide with an alkyl phenol, fatty alcohol or fatty amine or polypropylene oxide, and a phosphate coating activator such as activated titanium phosphate and optionally a condensed phosphate e.g. sodium pyro-, tripoly-, or hexameta-phosphate, as in Specification 932,987. The phosphating solution which may also be applied by spraying contains an accelerator such as nitrates and/or nitrites, hydrogen peroxide, chlorates, bromates or organic nitro compounds. If hot galvanized surfaces are to be treated the phosphating solution contains also a nickel salt and/or a simple or complex fluoride e.g. a silicofluoride. The phosphating step may be followed by a dip in a hexavalent chromium solution e.g. chromic acid, the cleaning, phosphating and chromate treatments being each followed by a water rinse unless the borate content of the cleaning solution is very low when washing may be omitted. Examples are given for treating motor car bodies and sheets of steel and in the latter case the phosphating solution includes nickel and silicofluoride in addition to zinc, nitrate and nitrite. Comparison tests on coated articles are given using a cleaner containing disodium orthophosphate or sodium pyrophosphate in place of the alkali borate.
GB1040266A 1965-03-31 1966-03-09 Improvements relating to the painting of metals by electrodeposition Expired GB1065069A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0064712 1965-03-31

Publications (1)

Publication Number Publication Date
GB1065069A true GB1065069A (en) 1967-04-12

Family

ID=7311213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1040266A Expired GB1065069A (en) 1965-03-31 1966-03-09 Improvements relating to the painting of metals by electrodeposition

Country Status (8)

Country Link
AT (1) AT278466B (en)
BE (1) BE675956A (en)
CH (1) CH465993A (en)
DE (1) DE1287892B (en)
FR (1) FR1465896A (en)
GB (1) GB1065069A (en)
NL (1) NL6601977A (en)
SE (1) SE375337B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4867853A (en) * 1986-10-17 1989-09-19 Metallgesellschaft Aktiengesellschaft Process of producing phosphate coatings
WO1992015730A1 (en) * 1991-03-11 1992-09-17 Caterpillar Inc. Method for painting an engine
EP2787100A1 (en) * 2013-04-02 2014-10-08 Matthias Koch Method for producing a coated metal substrate and the coated metal substrate obtainable by this process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3541997A1 (en) * 1985-11-28 1987-06-04 Collardin Gmbh Gerhard IMPROVED METHOD FOR ACTIVATING METAL SURFACES BEFORE ZINC PHOSPHATION
DE3828888A1 (en) * 1988-08-25 1990-03-08 Ford Werke Ag MULTIPLE COATED STEEL SHEET FOR THE EXTERIOR OF MOTOR VEHICLE BODY PARTS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4867853A (en) * 1986-10-17 1989-09-19 Metallgesellschaft Aktiengesellschaft Process of producing phosphate coatings
WO1992015730A1 (en) * 1991-03-11 1992-09-17 Caterpillar Inc. Method for painting an engine
EP2787100A1 (en) * 2013-04-02 2014-10-08 Matthias Koch Method for producing a coated metal substrate and the coated metal substrate obtainable by this process

Also Published As

Publication number Publication date
FR1465896A (en) 1967-01-13
BE675956A (en) 1966-06-16
NL6601977A (en) 1966-10-03
DE1287892B (en)
CH465993A (en) 1968-11-30
SE375337B (en) 1975-04-14
AT278466B (en) 1970-02-10

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