EP0640152B1 - Verfahren zum emailbeschichten von stahlbändern - Google Patents

Verfahren zum emailbeschichten von stahlbändern Download PDF

Info

Publication number
EP0640152B1
EP0640152B1 EP93909357A EP93909357A EP0640152B1 EP 0640152 B1 EP0640152 B1 EP 0640152B1 EP 93909357 A EP93909357 A EP 93909357A EP 93909357 A EP93909357 A EP 93909357A EP 0640152 B1 EP0640152 B1 EP 0640152B1
Authority
EP
European Patent Office
Prior art keywords
coating
stoving
treatment
powder
coated
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
EP93909357A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0640152A1 (de
Inventor
Hans Josef May
Roland Schnettler
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0640152A1 publication Critical patent/EP0640152A1/de
Application granted granted Critical
Publication of EP0640152B1 publication Critical patent/EP0640152B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D5/00—Coating with enamels or vitreous layers
    • C23D5/04—Coating with enamels or vitreous layers by dry methods

Definitions

  • the invention relates to a method for enamel coating by means of powder coating and subsequent baking of endless steel strips finished by annealing.
  • DE-PS 35 36 040 discloses a method for coating on both sides with a base enamel layer and a cover enamel layer to be applied to it on at least one side of tapes guided over rollers in a non-contact continuous pass through baking ovens with heating and cooling zones, in which the tapes are used Heat treatment after coating is introduced vertically into the baking oven and guided vertically through the baking oven.
  • a slip or a powder for the enamel layer to be baked is applied to the cold steel strips supplied, which may have been refined or coated in previous processes by annealing.
  • the steel strip with the enamel layer is then heated in the subsequent baking oven branded at the same time.
  • Systems of this type are only designed for relatively small output quantities.
  • the object of the invention is to propose a method of the type mentioned in the introduction in which high output quantities can be achieved in corresponding systems with a comparatively low energy requirement, systems of the same nature being intended to be used for such a coating.
  • the invention makes use of the fact that steel strips to be refined have to be subjected to an annealing treatment at a temperature which represents a suitable temperature level in the subsequent enamel coating.
  • the endless steel strips refined by annealing are therefore immediately coated with the same powder in the same heat and heat-treated in a subsequent baking station. There is therefore no need to heat up the steel strip to the necessary treatment level, so that the energy requirement results in a significant acceleration of the process.
  • Such a method according to the invention makes it possible to use plants of the same nature, for example hot-dip galvanizing or aluminizing plants and also continuous annealing plants, in which a coating station with subsequent baking treatment is only to be inserted behind the annealing treatment station. It can therefore Existing systems with relatively few additional facilities can be used to carry out the process, which means that the usability of such a system can be considerably higher and the total costs for the finished strip coated with enamel can be reduced.
  • Enamel-coated refined steel strips will increasingly replace the usual plastic-coated steel strips, which will only be used to a small extent in the future due to their disadvantages in the case of fires and recycling.
  • the invention also includes the proposal to first coat the steel strips with non-ferrous metals or corresponding alloys after the annealing treatment. This intermediate coating also takes place in the same heat. It sometimes has the advantage that the enamel coating is carried out only on one side, the basic enamelling can be omitted, and additional anodic corrosion protection is achieved when using, for example, aluminum or aluminum alloy coatings.
  • Burn-in treatment in vertical ovens is an advantage because they are cheap to accommodate due to the space available in such systems.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating With Molten Metal (AREA)
  • Drying Of Solid Materials (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP93909357A 1992-05-16 1993-04-30 Verfahren zum emailbeschichten von stahlbändern Expired - Lifetime EP0640152B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4216282A DE4216282C1 (enrdf_load_stackoverflow) 1992-05-16 1992-05-16
DE4216282 1992-05-16
PCT/DE1993/000395 WO1993023589A1 (de) 1992-05-16 1993-04-30 Verfahren zum emailbeschichten von stahlbändern

Publications (2)

Publication Number Publication Date
EP0640152A1 EP0640152A1 (de) 1995-03-01
EP0640152B1 true EP0640152B1 (de) 1995-12-06

Family

ID=6459089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93909357A Expired - Lifetime EP0640152B1 (de) 1992-05-16 1993-04-30 Verfahren zum emailbeschichten von stahlbändern

Country Status (6)

Country Link
EP (1) EP0640152B1 (enrdf_load_stackoverflow)
AT (1) ATE131219T1 (enrdf_load_stackoverflow)
AU (1) AU3979693A (enrdf_load_stackoverflow)
DE (1) DE4216282C1 (enrdf_load_stackoverflow)
ES (1) ES2080617T3 (enrdf_load_stackoverflow)
WO (1) WO1993023589A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4328021C2 (de) * 1993-08-20 1995-05-24 Hans Josef May Verfahren zur kontinuierlichen ein- oder beidseitigen Beschichtung von Metallbändern mit Email- oder Kunststoffpulvern sowie Vorrichtung zur Durchführung eines solchen Verfahrens

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL290384A (enrdf_load_stackoverflow) * 1961-02-02
GB1168239A (en) * 1968-08-03 1969-10-22 Robertson Co H H Porcelain Enamelled Aluminized Steel
BE790958A (en) * 1972-11-03 1973-03-01 Centre Rech Metallurgique Continuously enamelling metal sheet - by applying aluminium to both sides then applying the enamel
CA1100253A (en) * 1978-02-22 1981-05-05 Peter J. Rollin Marking on hot metal objects
DE3045249A1 (de) * 1980-12-01 1982-07-01 Eisenwerke Fried. Wilh. Düker GmbH & Co, 8782 Karlstadt Verfahren zum aufbringen eines resistenten schutzemailueberzugs auf duktile gusskoerper
DE3536040C1 (de) * 1985-10-09 1987-05-27 Roland Schnetteler Verfahren zur beidseitigen Beschichtung von Baendern mit Emailschichten

Also Published As

Publication number Publication date
AU3979693A (en) 1993-12-13
EP0640152A1 (de) 1995-03-01
DE4216282C1 (enrdf_load_stackoverflow) 1993-06-09
ES2080617T3 (es) 1996-02-01
WO1993023589A1 (de) 1993-11-25
ATE131219T1 (de) 1995-12-15

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