EP0255896B1 - Verfahren zum elektrophoretischen Aufbau Al-freier selbstreinigender Email-Schichten auf Stahlblechteilen - Google Patents

Verfahren zum elektrophoretischen Aufbau Al-freier selbstreinigender Email-Schichten auf Stahlblechteilen Download PDF

Info

Publication number
EP0255896B1
EP0255896B1 EP87110663A EP87110663A EP0255896B1 EP 0255896 B1 EP0255896 B1 EP 0255896B1 EP 87110663 A EP87110663 A EP 87110663A EP 87110663 A EP87110663 A EP 87110663A EP 0255896 B1 EP0255896 B1 EP 0255896B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
layer
enamel
self
electrophoresis
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 - Lifetime
Application number
EP87110663A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0255896A2 (de
EP0255896A3 (en
Inventor
Hans Dr. Hoffmann
Bruno Hees
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Priority to AT87110663T priority Critical patent/ATE52818T1/de
Publication of EP0255896A2 publication Critical patent/EP0255896A2/de
Publication of EP0255896A3 publication Critical patent/EP0255896A3/de
Application granted granted Critical
Publication of EP0255896B1 publication Critical patent/EP0255896B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C25D13/02—Electrophoretic coating characterised by the process with inorganic material

Definitions

  • the present invention relates to an improved method for electrophoretic deposition of self-cleaning enamel layers, in which first a base enamel layer is deposited on the sheet steel part, then the cover enamel layer is applied and both layers are baked together.
  • Electrodeposition enamelling is normally limited to the application of a single layer, since it requires a conductive, metallic surface.
  • Electro-osmosis solidifies the deposited layer during application, which then rinses off loosely adhering particles and under certain conditions, e.g. sufficient solid deposition and products coordinated with regard to melting behavior and interfacial reactions even allow the application of a further layer on this substrate. In the case of product combinations with good electrodeposition of both systems, this second layer can then also be deposited electrophoretically.
  • the present invention is therefore a process for the electrophoretic construction of continuously self-cleaning systems on sheet steel in a two-layer / single-burn process, which is characterized in that the base layer is applied in a layer thickness between 80 and 120 microns and the spec. Conductivity set to less than 2000 gS.cm- 1 .
  • the method according to the invention is preferably used for the production of continuously self-cleaning inner parts of the stove. Acid-resistant direct emails are preferred as the base layer.
  • Suitable raw materials for the first layer are all ETE-compatible, known basic emails or special emails, the slip of which after grinding - before adding Na aluminate - a spec. Conductivity does not exceed 2000 ⁇ S.cm- 1 .
  • the electrophoretic build-up of the self-cleaning layer takes place in a second application basin (exposure time approx. 15 seconds).
  • non-electrophoretically deposited particles are rinsed in (810-840 ° C., dwell times about 2.5 to 4 minutes). -
  • the exact baking conditions depend on the sheet thickness, the selected enamels and the weight of the parts.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)
  • Physical Vapour Deposition (AREA)
  • Insulated Metal Substrates For Printed Circuits (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Coating With Molten Metal (AREA)
  • Electroplating Methods And Accessories (AREA)
EP87110663A 1986-08-05 1987-07-23 Verfahren zum elektrophoretischen Aufbau Al-freier selbstreinigender Email-Schichten auf Stahlblechteilen Expired - Lifetime EP0255896B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87110663T ATE52818T1 (de) 1986-08-05 1987-07-23 Verfahren zum elektrophoretischen aufbau alfreier selbstreinigender email-schichten auf stahlblechteilen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863626424 DE3626424A1 (de) 1986-08-05 1986-08-05 Verfahren zum elektrophoretischen aufbau al-freier selbstreinigender email-schichten auf stahlblechteilen
DE3626424 1986-08-05

Publications (3)

Publication Number Publication Date
EP0255896A2 EP0255896A2 (de) 1988-02-17
EP0255896A3 EP0255896A3 (en) 1988-07-20
EP0255896B1 true EP0255896B1 (de) 1990-05-16

Family

ID=6306694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87110663A Expired - Lifetime EP0255896B1 (de) 1986-08-05 1987-07-23 Verfahren zum elektrophoretischen Aufbau Al-freier selbstreinigender Email-Schichten auf Stahlblechteilen

Country Status (5)

Country Link
US (1) US4822463A (enrdf_load_stackoverflow)
EP (1) EP0255896B1 (enrdf_load_stackoverflow)
AT (1) ATE52818T1 (enrdf_load_stackoverflow)
DE (2) DE3626424A1 (enrdf_load_stackoverflow)
ES (1) ES2015016B3 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4013139A1 (de) * 1990-04-25 1991-10-31 Bayer Ag Selbstreinigende beschichtungen fuer ofenwandungen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935088A (en) * 1970-09-12 1976-01-27 Miele & Cie Electrophoretic enamelling of ferrous articles
DE2917710A1 (de) * 1979-05-02 1980-11-13 Volkswagenwerk Ag Verfahren zum elektrophoretischen auftragen von mit aluminiumpulver gefuellten emails auf eisen- oder stahlteile
DE2923589B1 (de) * 1979-06-11 1980-06-04 Basf Farben & Fasern Waessrige Dispersion
EP0036558A1 (de) * 1980-03-22 1981-09-30 Bayer Ag Beschichteter Metallgegenstand und Verfahren zu dessen Herstellung
DE3333072A1 (de) * 1983-09-14 1985-03-21 Basf Farben + Fasern Ag, 2000 Hamburg Ueberzugsmasse, verfahren zur herstellung von ueberzuegen und beschichtetes substrat

Also Published As

Publication number Publication date
US4822463A (en) 1989-04-18
ES2015016B3 (es) 1990-08-01
EP0255896A2 (de) 1988-02-17
DE3626424A1 (de) 1988-02-11
ATE52818T1 (de) 1990-06-15
DE3762761D1 (de) 1990-06-21
EP0255896A3 (en) 1988-07-20
DE3626424C2 (enrdf_load_stackoverflow) 1989-08-17

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