WO1998000240A1 - Procede et dispositif pour recouvrir une piece - Google Patents

Procede et dispositif pour recouvrir une piece Download PDF

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Publication number
WO1998000240A1
WO1998000240A1 PCT/DE1997/001329 DE9701329W WO9800240A1 WO 1998000240 A1 WO1998000240 A1 WO 1998000240A1 DE 9701329 W DE9701329 W DE 9701329W WO 9800240 A1 WO9800240 A1 WO 9800240A1
Authority
WO
WIPO (PCT)
Prior art keywords
workpiece
heating
chamber
coating
heat
Prior art date
Application number
PCT/DE1997/001329
Other languages
German (de)
English (en)
Inventor
Horst Russmann
Original Assignee
Ema Elektro-Maschinen-Schultze Gmbh & Co. Kg
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 Ema Elektro-Maschinen-Schultze Gmbh & Co. Kg filed Critical Ema Elektro-Maschinen-Schultze Gmbh & Co. Kg
Priority to AU35364/97A priority Critical patent/AU3536497A/en
Publication of WO1998000240A1 publication Critical patent/WO1998000240A1/fr

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
    • 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
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • B05D3/0245—Pretreatment, e.g. heating the substrate with induction heating
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00—Furnaces of a kind not covered by any preceding group
    • F27B17/0016—Chamber type furnaces
    • F27B17/0083—Chamber type furnaces with means for circulating the atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • F27D2099/0015—Induction heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the invention relates to a device and a method for coating a workpiece, the workpiece being inductively heated before and / or after the application of the coating medium and the coated workpiece being subjected to a subsequent temperature treatment for drying, reacting or hardening the coating
  • the coated or painted workpieces are subjected to a temperature treatment in a forced-air oven , which is usually specified by the manufacturer or supplier of the coating medium. This temperature is then maintained over a likewise specified period of time, so that any necessary chemical reactions can take place
  • a further disadvantage of the conventional method is that the heat must always be conveyed to the workpiece through the coating that has already been applied or through the lacquer. but a certain thermal insulation, which considerably hinders the warming-up process of the workpiece.
  • the outer layer must first be melted down to the interface with the workpiece. Degassing of a porous workpiece, for example, and degassing of the powder is difficult because the gas must escape through the already melted upper skin, so that air bubbles often form on the surface of the coating.
  • the adhesion of the coating to the workpiece is often insufficient and is hampered in particular by the formation of bubbles. There is usually no full-surface contact, which in turn has a negative effect on the wetting and subsequent adhesion of the coating to the workpiece.
  • a method for coating a workpiece of the type in question is characterized in that a thermally insulated chamber with an induction heating device arranged therein is provided for inductive heating of the workpiece and that the heat given off during and after the inductive heating to the chamber atmosphere for heating the chamber and thereby for the subsequent heat treatment of the workpiece and the coating.
  • inductive heating can be used for the temperature treatment of the already coated workpiece insofar as inductive heating is carried out in a thermally insulated chamber with an induction heating device arranged therein.
  • the heat emitted during and after the inductive heating of the entire system - induction coil and workpiece with coating - is used in a particularly advantageous manner for heating the chamber and thereby for subsequent temperature treatment due to the arrangement within the thermally insulated chamber.
  • the advantage according to the invention lies in the optimal use of the energy required for inductive heating of the workpiece, namely in that the total radiated heat is used to heat the chamber.
  • the induction coil, the workpiece and even the coating serve as a radiator and heat up the chamber through heat radiation.
  • the inductive heating in particular the temperature of the workpiece, can be controlled in accordance with the above statements in such a way that the workpiece and possibly the coating medium are first degassed. After the degassing step, it is then possible to adjust the temperature of the workpiece - again by inductive heating - to be increased until the coating medium melts, reacts or reacts, hardens or dries. In any case, the temperatures to be imparted to the workpiece must be matched to the respective coating medium.
  • This independent heating device could also be used for additional heating or reheating the chamber atmosphere.
  • This can also be an inductively heated heat exchanger which, in the course of its inductive heating, releases heat to the environment.
  • the cooling medium of induction cooling i.e. the cooling medium flowing through the induction coil is fed to a heat exchanger which provides at least a sufficient amount of heat for preheating the chamber atmosphere.
  • the energy of the system can be optimally used.
  • the aforementioned object with regard to the device for coating a workpiece according to the invention is achieved by the features of claim 1 1.
  • a corresponding device is then designed in such a way that a thermally insulated chamber with an induction heating device arranged therein is provided for inductive heating of the workpiece and that the heat given off during and after inductive heating is used for heating the chamber and for subsequent temperature treatment.
  • the chamber is advantageously designed in the sense of a circulating air oven, and a fan can be provided to circulate the heated chamber atmosphere.
  • a thermally insulated chamber 3 with an induction heating device 4 arranged therein is provided for the inductive heating of the workpiece 1. see.
  • the heat given off during and after inductive heating is used in a further manner according to the invention for heating the chamber 3 and thus for the subsequent temperature treatment.
  • the cooling medium of the inductor cooling is fed to a heat exchanger 7 for preheating the chamber atmosphere.
  • the heat generation in a conventional convection oven is usually carried out by the combustion of gas or oil, or also by electrical heating.
  • the inductive heating of a part to be coated or painted is always carried out using electrical energy.
  • the combination of inductive heating of the workpiece to be coated in a convection oven or within an insulated chamber ensures that the advantages of inductive heating for the coating and painting process come into play first, and that on the other hand the heat given off during heating remains in the insulated chamber of the circulating air oven. In this respect, after overcoming a preheating phase - provided the heat capacity is sufficient - any further energy supply to the convection oven can be dispensed with.
  • the induction heating takes place many times faster than the pure heating of the workpiece by means of circulating air, or also by means of heaters heated electrically or by gas, the workpieces to be coated or painted serve equally as heating for the circulating air oven.
  • This oven is then so designed that the parts in the course of the coating process itself is completed in the furnace as long as befin ⁇ until the heating phase by means of induction and the full reaction of the coating medium by the circulating air.
  • the warming of the workpiece by induction is only a fraction of the time required for any other form of heating or temperature treatment, on the one hand the size and on the other hand the energy consumption of the convection oven is reduced.
  • the chamber or the circulating air oven could consist of three essential components, namely the actual induction heating device, the hot air reaction zone for the workpiece and a cooling zone that closes the process.
  • the system described above can at least largely compensate for the poor efficiency of inductive heating of good electrical conductors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • Molecular Biology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant de recouvrir une pièce (1). Selon le procédé, la pièce (1) est chauffée par induction avant et/ou après application de la substance de revêtement. La pièce (1) recouverte est ensuite soumise à un traitement thermique pour sécher, faire réagir ou durcir le revêtement. Pour optimiser le résultat de cette opération de revêtement avec une utilisation optimale de l'énergie, il est prévu pour assurer le chauffage par induction de la pièce (1), une chambre (3) isolée thermiquement comprenant un système de chauffage par induction (4). La chaleur dégagée pendant et après le chauffage par induction sert à chauffer la chambre (3), ainsi qu'à assurer le traitement thermique ultérieur.
PCT/DE1997/001329 1996-06-29 1997-06-26 Procede et dispositif pour recouvrir une piece WO1998000240A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU35364/97A AU3536497A (en) 1996-06-29 1997-06-26 Device and process for coating a workpiece

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19626209A DE19626209A1 (de) 1996-06-29 1996-06-29 Vorrichtung und Verfahren zum Beschichten eines Werkstücks
DE19626209.7 1996-06-29

Publications (1)

Publication Number Publication Date
WO1998000240A1 true WO1998000240A1 (fr) 1998-01-08

Family

ID=7798445

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1997/001329 WO1998000240A1 (fr) 1996-06-29 1997-06-26 Procede et dispositif pour recouvrir une piece

Country Status (3)

Country Link
AU (1) AU3536497A (fr)
DE (1) DE19626209A1 (fr)
WO (1) WO1998000240A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109654884A (zh) * 2018-12-24 2019-04-19 周孟熙 一种海瓷烧制用的节能环保窑具
CN115461816A (zh) * 2020-04-10 2022-12-09 惠普发展公司，有限责任合伙企业 具有无焊料热结合部的热模块

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19948864A1 (de) * 1999-10-08 2001-04-26 Pvt Plastverarbeitung Thuering Verfahren zum Lackieren von Bauteilen, insbesondere Kunststoffteilen
DE10130342C1 (de) * 2001-06-20 2003-02-06 Inductotherm Coating Equipment Verfahren und Vorrichtung zum Trocknen und/oder Einbrennen einer auf ein metallisches Band aufgebrachten Beschichtung
EP2624965B1 (fr) 2010-10-06 2015-12-30 Andrzej Stasz QNC Dispositif d'application de couche de peinture et procédé d'application de couche de peinture
PL72926Y1 (pl) 2021-05-20 2023-03-06 Andrzej Stasz Urządzenie do wygrzewania profilów metalowych z wykorzystaniem indukcji elektromagnetycznej
DE102022121025A1 (de) 2022-08-19 2024-02-22 Otto Junker Gesellschaft mit beschränkter Haftung Vorrichtung und Verfahren zum Erwärmen stangenförmiger metallischer Werkstücke

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE696318A (fr) * 1965-04-21 1967-10-02
FR1553899A (fr) * 1966-11-29 1969-01-17
WO1992014979A1 (fr) * 1991-02-26 1992-09-03 Carnaudmetalbox Plc Four
WO1993024801A1 (fr) * 1992-06-03 1993-12-09 Esec S.A. Dispositif pour le traitement thermique d'un magasin pour des grilles de connexion pourvues de composants electroniques
US5357687A (en) * 1993-07-23 1994-10-25 Xerox Corporation Method and apparatus for drying/curing rigid cylindrical and flexible belt substrates
EP0744222A1 (fr) * 1995-05-23 1996-11-27 Stein Heurtey Procédé et dispositif de revêtement de bandes métalliques

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE919878C (de) * 1951-02-11 1954-11-04 Deutsche Edelstahlwerke Ag Verfahren zum Trocknen von Lacken
US4680871A (en) * 1985-05-17 1987-07-21 David Reznik Apparatus and method for drying and curing coated substrates
JPS63242370A (ja) * 1987-03-30 1988-10-07 Honda Motor Co Ltd 塗料の焼付乾燥方法および装置
EP0509374B1 (fr) * 1991-04-18 1998-03-04 Alltrista Corporation Procédé et appareil pour sécher et cuire un revêtement d'un substrat métallique

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE696318A (fr) * 1965-04-21 1967-10-02
FR1553899A (fr) * 1966-11-29 1969-01-17
WO1992014979A1 (fr) * 1991-02-26 1992-09-03 Carnaudmetalbox Plc Four
WO1993024801A1 (fr) * 1992-06-03 1993-12-09 Esec S.A. Dispositif pour le traitement thermique d'un magasin pour des grilles de connexion pourvues de composants electroniques
US5357687A (en) * 1993-07-23 1994-10-25 Xerox Corporation Method and apparatus for drying/curing rigid cylindrical and flexible belt substrates
EP0744222A1 (fr) * 1995-05-23 1996-11-27 Stein Heurtey Procédé et dispositif de revêtement de bandes métalliques

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109654884A (zh) * 2018-12-24 2019-04-19 周孟熙 一种海瓷烧制用的节能环保窑具
CN109654884B (zh) * 2018-12-24 2019-12-13 周孟熙 一种海瓷烧制用的节能环保窑具
CN115461816A (zh) * 2020-04-10 2022-12-09 惠普发展公司，有限责任合伙企业 具有无焊料热结合部的热模块

Also Published As

Publication number Publication date
DE19626209A1 (de) 1998-01-08
AU3536497A (en) 1998-01-21

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