EP0244022A3 - After-treatment process for phosphated metal surfaces - Google Patents

After-treatment process for phosphated metal surfaces Download PDF

Info

Publication number
EP0244022A3
EP0244022A3 EP87200762A EP87200762A EP0244022A3 EP 0244022 A3 EP0244022 A3 EP 0244022A3 EP 87200762 A EP87200762 A EP 87200762A EP 87200762 A EP87200762 A EP 87200762A EP 0244022 A3 EP0244022 A3 EP 0244022A3
Authority
EP
European Patent Office
Prior art keywords
chromium
ions
metal surfaces
range
iii
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Withdrawn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
EP87200762A
Other languages
German (de)
French (fr)
Other versions
EP0244022A2 (en
Inventor
Miyawaki Toshi
Yoshida Atsunori
Saito Yoshikazu
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.)
Nihon Parkerizing Co Ltd
Original Assignee
Nihon Parkerizing 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 Nihon Parkerizing Co Ltd filed Critical Nihon Parkerizing Co Ltd
Publication of EP0244022A2 publication Critical patent/EP0244022A2/en
Publication of EP0244022A3 publication Critical patent/EP0244022A3/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Withdrawn legal-status Critical Current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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/38—Chromatising

Landscapes

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

Abstract

Bei einem Verfahren zur Nachbehandlung phosphatierter Metalloberflächen erfolgt die Behandlung mit einer Chrom-VI- und Chrom-III-Ionen enthaltenden Lösung durch kathodische Elektrolyse, wobei die Konzentration an Chrom-VI-Ionen auf einen Wert im Bereich von 0,05 bis l0 g/l und das Verhältnis von Chrom-III/Chrom-VI auf kleiner l,0 eingestellt ist. Anschließend wird lackiert. In a process for the aftertreatment of phosphated Metal surfaces are treated with a Solution containing chromium VI and chromium III ions cathodic electrolysis, the concentration of Chromium VI ions to a value in the range of 0.05 to 10 g / l and the ratio of chromium III / chromium VI less than 1.0 is set. Then it is painted.

Gemäß bevorzugter Ausgestaltung der Erfindung führt man die Behandlung mit einer Chrom-VI- und Chrom-III-Ionen enthaltenden Lösung durch, die zusätzlich kolloidale Kieselsäure und/oder Phosphationen und/oder wasserlösliches organisches Polymer enthält und auf einen pH-Wert im Bereich von l,5 bis 5,0 eingestellt ist. According to a preferred embodiment of the invention, one leads treatment with a chromium VI and chromium III ion containing solution, which is also colloidal Silica and / or phosphate ions and / or contains water-soluble organic polymer and on a pH is set in the range of 1.5 to 5.0.

Bei der kathodischen Elektrolyse wird zweckmäßigerweise eine Stromdichte von 0,0l bis 0,5 A/dm² und eine Behandlungsdauer von 2 bis l20 sec eingestellt, so daß ein Schichtgewicht von 4 bis l00 mg/m² (berechnet als Cr) resultiert. Die anschließende Lackierung wird besonders günstig als Elektrotauchlackierung ausgestaltet. In cathodic electrolysis is expedient a current density of 0.0l to 0.5 A / dm² and a Treatment duration set from 2 to 120 sec, so that a Layer weight from 4 to 100 mg / m² (calculated as Cr) results. The subsequent painting is special inexpensively designed as electro dip painting.

EP87200762A 1986-04-26 1987-04-23 After-treatment process for phosphated metal surfaces Withdrawn EP0244022A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP95909/86 1986-04-26
JP61095909A JPH0633465B2 (en) 1986-04-26 1986-04-26 Post-treatment method for phosphate car body

Publications (2)

Publication Number Publication Date
EP0244022A2 EP0244022A2 (en) 1987-11-04
EP0244022A3 true EP0244022A3 (en) 1989-03-15

Family

ID=14150418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87200762A Withdrawn EP0244022A3 (en) 1986-04-26 1987-04-23 After-treatment process for phosphated metal surfaces

Country Status (7)

Country Link
US (1) US4728401A (en)
EP (1) EP0244022A3 (en)
JP (1) JPH0633465B2 (en)
AU (1) AU586331B2 (en)
CA (1) CA1314511C (en)
DE (1) DE3713426A1 (en)
PT (1) PT84762B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3219453B2 (en) * 1992-03-17 2001-10-15 日本パーカライジング株式会社 Manufacturing method of galvanized steel sheet with excellent blackening resistance
US6096183A (en) * 1997-12-05 2000-08-01 Ak Steel Corporation Method of reducing defects caused by conductor roll surface anomalies using high volume bottom sprays

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1303317A (en) * 1960-10-10 1962-09-07 Amchem S A Improvements to solutions for the treatment of metal surfaces with a view to improving their resistance to corrosion, and to processes for the preparation and use of such solutions
FR84488E (en) * 1960-10-10 1965-02-19 Amchem S A Improvements to solutions for the treatment of metal surfaces with a view to improving their resistance to corrosion, and to processes for the preparation and use of such solutions
GB988985A (en) * 1962-10-15 1965-04-14 Pyrene Co Ltd Improvements relating to the treatment of conversion coatings on metal surfaces
US3296100A (en) * 1962-05-09 1967-01-03 Yawata Iron & Steel Co Process for producing anticorrosive surface treated steel sheets and product thereof
EP0224065A1 (en) * 1985-11-01 1987-06-03 Nihon Parkerizing Co., Ltd. Process for obtaining chromate layers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1531056A (en) * 1976-06-01 1978-11-01 Bnf Metals Tech Centre Electrolytic production of chromium conversion coatings
IT1197609B (en) * 1983-03-21 1988-12-06 Centro Speriment Metallurg PROCESS PERFECTED FOR THE PRODUCTION OF COATED STEEL BELTS
JPS61257481A (en) * 1985-05-10 1986-11-14 Nippon Parkerizing Co Ltd Aqueous solution for surface conditioning for forming phosphate film by chemical conversion treatment
JPS63100185A (en) * 1986-10-16 1988-05-02 Nippon Parkerizing Co Ltd Phosphating method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1303317A (en) * 1960-10-10 1962-09-07 Amchem S A Improvements to solutions for the treatment of metal surfaces with a view to improving their resistance to corrosion, and to processes for the preparation and use of such solutions
FR84488E (en) * 1960-10-10 1965-02-19 Amchem S A Improvements to solutions for the treatment of metal surfaces with a view to improving their resistance to corrosion, and to processes for the preparation and use of such solutions
US3296100A (en) * 1962-05-09 1967-01-03 Yawata Iron & Steel Co Process for producing anticorrosive surface treated steel sheets and product thereof
GB988985A (en) * 1962-10-15 1965-04-14 Pyrene Co Ltd Improvements relating to the treatment of conversion coatings on metal surfaces
EP0224065A1 (en) * 1985-11-01 1987-06-03 Nihon Parkerizing Co., Ltd. Process for obtaining chromate layers

Also Published As

Publication number Publication date
JPS62254880A (en) 1987-11-06
EP0244022A2 (en) 1987-11-04
US4728401A (en) 1988-03-01
CA1314511C (en) 1993-03-16
JPH0633465B2 (en) 1994-05-02
AU7195187A (en) 1987-10-29
PT84762A (en) 1987-05-01
PT84762B (en) 1989-12-29
AU586331B2 (en) 1989-07-06
DE3713426A1 (en) 1987-10-29

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Inventor name: ATSUNORI, YOSHIDA

Inventor name: TOSHI, MIYAWAKI

Inventor name: YOSHIKAZU, SAITO