WO2009136010A1 - Procédé de séchage et/ou de cuisson d'un revêtement: organique sur une bande métallique en défilement continu, et dispositif pour la mise en oeuvre de ce procédé - Google Patents
Procédé de séchage et/ou de cuisson d'un revêtement: organique sur une bande métallique en défilement continu, et dispositif pour la mise en oeuvre de ce procédé Download PDFInfo
- Publication number
- WO2009136010A1 WO2009136010A1 PCT/FR2008/000650 FR2008000650W WO2009136010A1 WO 2009136010 A1 WO2009136010 A1 WO 2009136010A1 FR 2008000650 W FR2008000650 W FR 2008000650W WO 2009136010 A1 WO2009136010 A1 WO 2009136010A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- enclosure
- heating
- strip
- catalytic
- infrared radiation
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0209—Multistage baking
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
- F26B3/283—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun in combination with convection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/343—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects in combination with convection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2252/00—Sheets
- B05D2252/02—Sheets of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0263—After-treatment with IR heaters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0272—After-treatment with ovens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0281—After-treatment with induction heating
Definitions
- the invention relates generally to drying and / or baking organic coatings such as paints or varnishes on continuously moving metal strips.
- Organic coatings such as paints or varnishes are deposited in liquid form on the steel strips in continuous scrolling. It is therefore necessary to dry and / or bake these coatings before said strips can be deflected or supported by rollers and, of course, before being wound.
- a commonly used technique for the drying operation is to heat the band by induction. This method gives excellent results because the inductors heat the strip which, in turn, heats the coating, which facilitates the evaporation of the solvents.
- Induction heating has the disadvantage of not heating the walls of the furnace chamber, which has the consequence that their temperature remains below the dew point of the solvents. It follows the risk of condensation of solvent vapors on the walls, on the cooling circuits of the inductors ... In addition to the risk of ignition caused by possible accumulations of condensed solvents, drops of condensate can also fall on the band being dried and create appearance defects and / or insufficient protection.
- heating enclosures having additional devices for heating the walls of the enclosure, which are independent of the heating means of the strip.
- additional heating means such as heating means by induction or electric resistance have been installed in the furnace chamber for heating the walls.
- the subject of the present invention is a method for drying and / or firing a protective and / or decorative organic coating on a continuously moving metal strip, comprising: i) electromagnetic induction heating of the strip in a tunnel furnace, which comprises an enclosure with hot internal walls, for evaporating the solvents contained in the organic coating and ensuring drying and / or baking of the coating, the solvents being continuously extracted from the furnace enclosure, and ii) heating the enclosure to maintain said inner walls at a temperature equal to or greater than the dew point of the solvents.
- the electromagnetic induction heating of the strip provided with its coating has the advantage of heating the organic coating (for example a paint or varnish) by a heat input. from the strip which is transmitted by conduction to the coating, according to a gradient of establishing from the interface between the coating and the strip towards the free outer surface of the coating, which facilitates the evaporation of the solvents.
- the organic coating for example a paint or varnish
- Heating the enclosure to maintain the temperature of its internal walls above the dew point of the solvents makes it possible to limit the risks of condensation of solvent vapors on the walls of the enclosure in particular, or on the cooling circuits of the chambers. indicators.
- the electromagnetic induction heating of the strip provided with its coating is coupled, simultaneously with two other modes of heating complementary to the first mode by induction, namely a heating by infrared radiation and a convection heating at medium of a combustion gas, and the heating of the enclosure is achieved by convection by means of the same combustion gas as that used for convection heating of the strip.
- the metal strip may be steel, especially galvanized, or aluminum.
- the heating of the strip by infrared radiation has the advantage that the infrared radiation penetrates inside the coating to the interface between the strip and the coating, so that the drying and / or baking of the coating takes place from the outer surface of the coating to the interface with the band. This avoids the formation of blisters in the coating, while ensuring a high cooking temperature.
- combustion heating using a flue gas applies to both the enclosure and the strip, and more particularly to the coating according to a gradient established from the free outer surface of the coating towards its interface with the band.
- the heating by infrared radiation is carried out using at least one infrared radiation emitter with catalytic burner disposed in the enclosure of the tunnel furnace, said emitter comprising a catalytic structure composed of an impregnated catalytic element a catalytic combustion material on the surface of which is injected a combustion gas or a mixture of air and combustion gas, and in that the convection heating of the walls of the enclosure and the strip is ensured by the oxidation of the combustion gas which is injected on the surface of the catalytic element of said infrared radiation emitter.
- infrared radiation or catalytic radiant gas
- infrared radiation or catalytic radiant gas
- catalytic gas radiants usable according to the present invention there may be mentioned those described in European Patent EP 0 754 911. These are infrared radiation emitters with catalytic burner comprising:
- a housing a catalytic structure consisting of an element impregnated with a catalytic combustion material
- an injection device for a combustible gas located in the box and opening on the surface of the impregnated element
- thermo-reactors marketed by SUNKISS.
- the oxidation of the combustible gas, for example propane or natural gas, at the surface of the catalytic elements also provides the energy required for convection heating of the enclosure and, in part, the energy required for drying and / or cooling. baking of the coating without however reaching the high temperatures suitable for the sharp combustion.
- combustible gas for example propane or natural gas
- the catalytic structures of gas catalytic radiants provide partial oxidation of solvent vapors which offers the double advantage of increasing convective heating and reducing the amount of solvent vapors to be incinerated, which further improves the overall efficiency. thermal operation.
- the subject of the present invention is also a device for cooking and / or drying a protective and / or decorative organic coating previously deposited on a metal strip, which may be made of steel, in particular galvanized steel, or of aluminum, said process comprising:
- a tunnel oven comprising an enclosure with hot internal walls, said enclosure being equipped with:
- the heating means of the inner walls of the enclosure comprise convective heating means with the aid of a combustion gas, which also constitute heating means for the strip provided with its coating, and the device according to the invention further comprises means for heating by infrared radiation said strip provided with its coating.
- the infrared radiation heating means and the convection heating means are constituted by at least one infrared radiation emitter with catalytic burner, comprising a catalytic structure composed of a catalytic element impregnated with a catalytic combustion material on the surface of which is injected a combustion gas or a mixture of air and combustion gas.
- emitters such as those described in European Patent EP 0 754 911 B1 or thermoreactors from SUNKISS, as indicated above, are advantageously used in the device according to the invention as infrared radiation emitters.
- the induction heating means comprise a plurality of inductors distributed along the enclosure, between the inlet of the furnace and the outlet, in the direction of travel of the strip.
- the infrared heating means comprise a plurality of infrared radiation emitters with catalytic burner distributed along the enclosure in the direction of travel and arranged on either side of the strip.
- the induction heating is provided by several inductors distributed along the enclosure, in the direction of travel of the strip, and the infrared heating by catalytic radiant batteries (or infrared radiation emitters) disposed of and other of the band, alternatively with the inductors.
- This split distribution allows to modulate the cooking energy provided by each heating means along the band. For example, following the direction of travel of the band, most of the energy can be first brought by induction and gradually, the share of induction decreases in favor of radiation.
- Other distributions of heating means in particular inductors and radiants catalytic can also be envisaged depending on the desired modulation of the cooking energy.
- the device according to the invention advantageously contains a control system, which is able to adjust the number and location of the inductors in use as well as their power supply.
- This same control system is also able to adjust the number and location of radiant in use as well as their supply of gas or air / gas mixture.
- FIG. 1 is a schematic sectional diagram of a first example of a cooking and / or drying device according to the invention
- Figure 2 is a schematic sectional diagram of a second example of a cooking device and or drying according to the invention.
- the drying and / or cooking device shown in FIG. 1 comprises - a kiln 1, preferably vertical and forming a tunnel, which is crossed by a steel strip 2 on which has previously been deposited an organic coating such as varnish or paint , and means 3 (for example baffle rollers) for moving the strip 2 of an inlet E located at a first end of the chamber 11 of the oven 1 to an output S located at the other end of said enclosure 11,
- the oven 1 comprises an enclosure 11 with hot internal walls (not shown in FIGS. 1 and 2), which is equipped with:
- catalytic burner 5 or catalytic radiants
- the device 1 also comprises a recovery chamber 6 for oxidized gases and residual solvents, which are directed towards an incineration device 7.
- the recovery chamber 6 is disposed between two inductors 4 in the middle third of the chamber 11 of the furnace 1.
- the drying and / or cooking device 1 shown in FIG. 2 differs from that represented in FIG. 1 by the position of FIG. the recovery chamber 6, which is in the upper third of the enclosure 11.
- Figure 2 also shows a possible example of distribution of the power of the various heating means 4, 5 arranged along the enclosure 11 with, at the bottom of the enclosure, inductors operating at full power (W) in order to facilitate the heating of the coating by conduction from the strip 2 and to promote the vaporization of the solvents.
- the power of the inductors then decreases to reach low power (W / 4) at the top of the speaker.
- the catalytic radiants operate at full power (W) at the top of the enclosure 11 in order to promote the cross-linking of the coating and at low power (W / 4) at the bottom so as not to hinder the beneficial effect of the heating. by band 2 on the evaporation of solvents.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Biomedical Technology (AREA)
- Wood Science & Technology (AREA)
- Textile Engineering (AREA)
- Drying Of Solid Materials (AREA)
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FR2008/000650 WO2009136010A1 (fr) | 2008-05-08 | 2008-05-08 | Procédé de séchage et/ou de cuisson d'un revêtement: organique sur une bande métallique en défilement continu, et dispositif pour la mise en oeuvre de ce procédé |
BRPI0822662-8A BRPI0822662B1 (pt) | 2008-05-08 | 2008-05-08 | processo de secagem e/ou de cozimento de um revestimento orgânico sobre uma cinta metálica em passagem contínua e dispositivo para a aplicação desse processo |
CN2008801290911A CN102016472B (zh) | 2008-05-08 | 2008-05-08 | 用于干燥和/或烘干连续移动的金属带上的有机覆层的方法和用于施行该方法的装置 |
US12/991,594 US9789514B2 (en) | 2008-05-08 | 2008-05-08 | Method of drying and/or curing an organic coating on a continuously running metal strip, and device for implementing this method |
EP08805555.3A EP2281163B1 (fr) | 2008-05-08 | 2008-05-08 | Procédé de séchage et/ou de cuisson d'un revêtement: organique sur une bande métallique en défilement continu, et dispositif pour la mise en oeuvre de ce procédé |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FR2008/000650 WO2009136010A1 (fr) | 2008-05-08 | 2008-05-08 | Procédé de séchage et/ou de cuisson d'un revêtement: organique sur une bande métallique en défilement continu, et dispositif pour la mise en oeuvre de ce procédé |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009136010A1 true WO2009136010A1 (fr) | 2009-11-12 |
Family
ID=40239738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2008/000650 WO2009136010A1 (fr) | 2008-05-08 | 2008-05-08 | Procédé de séchage et/ou de cuisson d'un revêtement: organique sur une bande métallique en défilement continu, et dispositif pour la mise en oeuvre de ce procédé |
Country Status (5)
Country | Link |
---|---|
US (1) | US9789514B2 (fr) |
EP (1) | EP2281163B1 (fr) |
CN (1) | CN102016472B (fr) |
BR (1) | BRPI0822662B1 (fr) |
WO (1) | WO2009136010A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8076614B2 (en) * | 2006-09-01 | 2011-12-13 | Nieco Corporation | Multi-stage cooking system using radiant, convection, and magnetic induction heating, and having a compressed air heat guide |
WO2015009490A1 (fr) * | 2013-07-15 | 2015-01-22 | Finishing Brands Holdings Inc. | Système et procédé de durcissement |
CN104848666A (zh) * | 2015-04-25 | 2015-08-19 | 中山市宏健节能科技有限公司 | 一种基于电磁发热的干燥机 |
CN118045746A (zh) * | 2024-02-23 | 2024-05-17 | 湖北国源水性新材料股份有限公司 | 水性pu生产涂层红外加热烘干装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1462746B1 (fr) * | 2003-03-26 | 2013-05-08 | FUJIFILM Corporation | Procédé et dispositif de séchage pour une couche de revêtement |
CN102950096A (zh) * | 2012-11-27 | 2013-03-06 | 天津阿瑞斯工业炉有限公司 | 一种取向硅钢带绝缘涂层干燥装置 |
ITTO20130270A1 (it) * | 2013-04-03 | 2014-10-04 | Itt Italia Srl | Metodo ed impianto per effettuare trattamenti termici di elementi frenanti, in particolare pastiglie freno |
DE102020004905A1 (de) * | 2020-08-12 | 2022-02-17 | Hedrich Gmbh | Multiples Temperierverfahren für Werkstücke mittels Triplexofen |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1553899A (fr) * | 1966-11-29 | 1969-01-17 | ||
EP0445556A1 (fr) * | 1990-02-14 | 1991-09-11 | Armco Inc. | Procédé pour revêtir une bande de métal avec une poudre en matière plastique |
US5586877A (en) * | 1995-07-20 | 1996-12-24 | A.J.C. | Infrared ray emitters with catalytic burner |
DE19625548A1 (de) * | 1996-06-26 | 1998-01-02 | Schloemann Siemag Ag | Verfahren zum Beschichten von metallischen Bändern mit extrudiertem, duroplastischen Kunstharz |
EP1508383A2 (fr) * | 2001-06-20 | 2005-02-23 | Inductotherm Coating Equipment S.A. | Procédé et appareil pour sécher et/ou cuire un revêtement déposé sur une bande métallique |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5924166B2 (ja) * | 1977-10-20 | 1984-06-07 | 新日本製鐵株式会社 | ストリツプの連続加熱に於ける板温制御方法 |
US4370357A (en) * | 1981-03-11 | 1983-01-25 | Cleveland Gear Company | Process of continuous metal coating |
LU84911A1 (fr) | 1983-07-14 | 1985-04-17 | Cockerill Sambre Sa | Procede et installation de cuisson d'un revetement organique applique sur un support |
FR2734501B1 (fr) * | 1995-05-23 | 1997-07-04 | Stein Heurtey | Procede et dispositif de revetement de bandes metalliques |
CN2287279Y (zh) * | 1996-11-14 | 1998-08-05 | 杨秀原 | 红外线电热烘干装置 |
US6180933B1 (en) * | 2000-02-03 | 2001-01-30 | Bricmont, Inc. | Furnace with multiple electric induction heating sections particularly for use in galvanizing line |
JP2002143748A (ja) * | 2000-11-08 | 2002-05-21 | Inoac Corp | 塗装システム |
-
2008
- 2008-05-08 US US12/991,594 patent/US9789514B2/en active Active
- 2008-05-08 CN CN2008801290911A patent/CN102016472B/zh not_active Expired - Fee Related
- 2008-05-08 WO PCT/FR2008/000650 patent/WO2009136010A1/fr active Application Filing
- 2008-05-08 BR BRPI0822662-8A patent/BRPI0822662B1/pt not_active IP Right Cessation
- 2008-05-08 EP EP08805555.3A patent/EP2281163B1/fr active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1553899A (fr) * | 1966-11-29 | 1969-01-17 | ||
EP0445556A1 (fr) * | 1990-02-14 | 1991-09-11 | Armco Inc. | Procédé pour revêtir une bande de métal avec une poudre en matière plastique |
US5586877A (en) * | 1995-07-20 | 1996-12-24 | A.J.C. | Infrared ray emitters with catalytic burner |
DE19625548A1 (de) * | 1996-06-26 | 1998-01-02 | Schloemann Siemag Ag | Verfahren zum Beschichten von metallischen Bändern mit extrudiertem, duroplastischen Kunstharz |
EP1508383A2 (fr) * | 2001-06-20 | 2005-02-23 | Inductotherm Coating Equipment S.A. | Procédé et appareil pour sécher et/ou cuire un revêtement déposé sur une bande métallique |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8076614B2 (en) * | 2006-09-01 | 2011-12-13 | Nieco Corporation | Multi-stage cooking system using radiant, convection, and magnetic induction heating, and having a compressed air heat guide |
WO2015009490A1 (fr) * | 2013-07-15 | 2015-01-22 | Finishing Brands Holdings Inc. | Système et procédé de durcissement |
CN104848666A (zh) * | 2015-04-25 | 2015-08-19 | 中山市宏健节能科技有限公司 | 一种基于电磁发热的干燥机 |
CN118045746A (zh) * | 2024-02-23 | 2024-05-17 | 湖北国源水性新材料股份有限公司 | 水性pu生产涂层红外加热烘干装置 |
Also Published As
Publication number | Publication date |
---|---|
US20110059266A1 (en) | 2011-03-10 |
BRPI0822662B1 (pt) | 2020-12-08 |
US9789514B2 (en) | 2017-10-17 |
CN102016472A (zh) | 2011-04-13 |
BRPI0822662A2 (pt) | 2015-06-30 |
EP2281163A1 (fr) | 2011-02-09 |
CN102016472B (zh) | 2013-07-24 |
EP2281163B1 (fr) | 2015-12-02 |
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