EP0979317B1 - Verfahren zum aufbringen einer anorganischen beschichtung auf einen elektrisch leitfähigen körper - Google Patents

Verfahren zum aufbringen einer anorganischen beschichtung auf einen elektrisch leitfähigen körper Download PDF

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Publication number
EP0979317B1
EP0979317B1 EP97951074A EP97951074A EP0979317B1 EP 0979317 B1 EP0979317 B1 EP 0979317B1 EP 97951074 A EP97951074 A EP 97951074A EP 97951074 A EP97951074 A EP 97951074A EP 0979317 B1 EP0979317 B1 EP 0979317B1
Authority
EP
European Patent Office
Prior art keywords
coating
medium
coating medium
process according
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.)
Revoked
Application number
EP97951074A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0979317A2 (de
Inventor
Horst Russmann
Thomas Singe
Thomas c/o EMA ELEKTROMASCHINEN SCHULTZE KRUSE
Detlef c/o EMA ELEKTROMASCHINEN SCHULTZE HINZ
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.)
Ewald Doerken AG
Original Assignee
Ewald Doerken 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26031216&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0979317(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE19703489A external-priority patent/DE19703489A1/de
Application filed by Ewald Doerken AG filed Critical Ewald Doerken AG
Publication of EP0979317A2 publication Critical patent/EP0979317A2/de
Application granted granted Critical
Publication of EP0979317B1 publication Critical patent/EP0979317B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • B05D7/50—Multilayers
    • B05D7/51—One specific pretreatment, e.g. phosphatation, chromatation, in combination with one specific coating
    • 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
    • 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
    • C23C24/00—Coating starting from inorganic powder
    • C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
    • 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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00

Definitions

  • the invention relates to a method for applying an inorganic Coating on an electrically conductive body, especially on a metallic one Workpiece.
  • the most varied of methods for applying a are from practice known inorganic coating on an electrically conductive body.
  • the coating is built up under the influence of temperature, whereby a reaction of the coating medium after its application to the body or the surface of the body is caused.
  • the reaction leads to Establishment of an essentially inorganic network.
  • different reaction temperatures are required.
  • Such reactions differ in terms of thermodynamics and Kinetics crucial for reactions with organic coating media.
  • the coating described often serves to protect the often metallic body against corrosion.
  • the reaction described above usually takes place in a convection oven after applying the coating medium.
  • the reaction temperature is depending on the coating medium between 180 ° C and 300 ° C. With these The coating medium reacts to temperatures for coating.
  • the present invention is therefore based on the object of a method for Application of an inorganic coating on an electrically conductive body specify a precisely controllable temperature curve with short Temperature change processes with economical and energy-saving Operation is enabled.
  • the body is made available. Then the body optionally degreased and / or chemically pretreated and / or blasted, e.g. sandblasted. This allows the surface of the body if necessary be prepared for the coating. This is followed by the application of a Coating medium on at least the surface area to be coated of the body.
  • At least the one to be coated is now Surface area of the body before and / or during and / or after application of the coating medium is inductively heated to a reaction temperature.
  • this inductive heating according to the invention there is first a energetically very advantageous heating of the body realized, because only the surface area to be coated and not necessarily the entire area Body is heated.
  • By directly coupling to the electrically conductive body generates cyclones in the body that are due to the electrical resistance of the body material to warm the body to lead. Energy losses due to heating a heating medium in the form of For example, circulating air and its inevitable heat radiation are excluded.
  • the warming is consequently targeted in the body or in the body Surface area caused by a suitable control of the Induction device with it a precisely controllable temperature curve resulting short temperature change processes is enabled.
  • the inductive heating the body is heated from the inside, so to speak highly efficient heating of the coating medium is also effected.
  • the heating process according to the invention is summarized by means of an inductive one Heating in a simple manner via the energy supply to the associated Induction heating device adjustable, which then results from the direct inductive energy transfer principle in addition to a short heating phase extremely short reaction times to temperature control and changing processes result. Due to the direct heating of the surface area to be coated is an economical and energy-saving mode of operation without the requirement a spacious convection oven.
  • the surface area of the body to be coated in a simple manner and / or during and / or after the application of the coating medium be heated to a reaction temperature. This is a high flexibility of the Procedure guaranteed.
  • the coating medium has reacted to form the coating
  • as last step of the process of the invention is cooling the Body.
  • the body can be exposed to room temperature, which ultimately results in an independent cooling of the body.
  • the cooling can but also by an active process step using a cooling medium respectively.
  • the method according to the invention is an application method specified an inorganic coating on an electrically conductive body, in which a precisely controllable temperature curve with short Temperature change processes with economical and energy-saving Operating mode is realized.
  • the coating medium used could be sufficient the surface area of the body to be coated before Application of the coating medium heated inductively to a preheating temperature become.
  • the preheating temperature could prevent premature Initiate the reaction of the coating medium below the reaction temperature lie.
  • the coating medium could react to the coating with the participation of water. This would be a separate one Supply of the amount of water required for the reaction is conceivable.
  • the water supply but could also be done in a simple manner by an independent withdrawal of water from the atmospheric humidity of the surrounding atmosphere.
  • the coating medium and so that the coating preferably has pigments made of zinc and / or aluminum. This would be an active protection against corrosion by the coating medium realized.
  • Coating medium additives such as internal lubricants, viscosity regulators, Have leveling agents and / or anti-crater additives.
  • this could Coating medium a binder from at least one organic and / or have inorganic metal compound.
  • the aforementioned elements can in the metal compound available individually or in combination.
  • a binder for the Coating medium a high molecular aminically crosslinked epoxy / phenoxy binder advantageous.
  • the binders in an optionally commercially available organic solvent and / or be dissolved in water.
  • the body could be the preheating temperature between room temperature and the Boiling temperature of the solvent or water. This would be a controlled escape of the solvent or water from the build-up Layer guaranteed and thus an optimal compression of the layer reached.
  • Such preheating could be done both before applying the coating medium as well as after application. In the latter The case would then be a gradual heating of the surface area to be coated of the body with the coating medium already applied.
  • inductive heating could of the body only within partial areas.
  • By such targeted heating of only the areas to be coated it is possible to adjacent and / or non-electrically conductive substances or surface areas little or no warming up. A warming of these areas would be then only possible by heat conduction.
  • the targeted introduction of heat also enables the coating of individual parts of an overall device and, on the other hand, complete complete devices. Doing so e.g. fully assembled bearings coated entirely or only at selected points become.
  • the heating could be carried out in one Surface area with a depth of max. 0.5 mm. With accordingly Short-term warming would be conduction into the remaining areas to neglect the body to be coated.
  • a gaseous or liquid cooling medium could be used as the cooling medium
  • Form of, for example, air, water or oil can be used. This would be temperature sensitive Areas easily protected from the effects of temperature. Only by using induction heating is it possible to be temperature sensitive Places or areas of the body to be coated at the same time as the heating the surface areas to be coated with air or liquid Cool cooling media.
  • Induction heating processes shorten the response time with a significant increase in the crosslinking temperature to achieve a fully crosslinked Coating conditionally, which is only in their fully networked scope their favorable Features fully. Too high a temperature can, however Destruction of the network or the pigments and additives embedded in it to lead. As a result, cooling the body at the appropriate time may differ bring positive effects. The cooling could only be achieved after this the reaction temperature can be used.
  • the coating could be a have cathodic effect.
  • the coating could in addition or as an alternative to the cathodic effect, it is electrically and / or thermally conductive his. Almost metallic conductivity could be achieved.
  • the coating could have a layer thickness from about 2 to 30 microns. This might be the case extreme corrosion protection in the thinnest layers. In more advantageous The coating could also be weldable.
  • the coating could have no heavy metals and in particular free of chromium VI and cadmium his.
  • the control of the layer thickness could, on the one hand, be based on the viscosity of the Coating medium and on the other hand or additionally via a mechanical Deduction must be set. With a view to mechanical removal this can be done in a simple manner by skidding. All other known Paint application methods are also applicable.
  • an additional organic top layer could be applied to the coating be upset.
  • the composition of the top layer could be considered for the best possible adhesion to the composition of the coating be coordinated.
  • the binder has a significant influence. in the In connection with the application of organic cover layers are high molecular weight aminically cross-linked epoxy / phenoxy binders of the top layer in particular Cheap.
  • the coating medium and / or the top layer is applied in in a particularly simple manner by spraying, in particular electrostatic Spraying, or a dipping process.
  • the diving process in connection with Skidding is particularly used for bulk goods.
  • Controlling the coating parameters could be particularly simple Way through the AC voltage frequency of the inductor and / or the induction duration and / or the reaction temperature.
  • the method according to the invention can be used with all known technologies.
  • Applying an organic cover layer can reduce the coloring, insulation, setting a constant coefficient of friction and improving the Contact corrosion resistance serve.
  • transistorized converters are used as induction devices Application, as this particularly the execution of precise computer-controlled processes favor.
  • the inventive method for applying an inorganic coating has a high protective effect against the chemical and electrochemical Corrosion as well as contact corrosion of e.g. Steel versus aluminum Episode. Furthermore, a high resistance of the coating in salt spray, Condensation and Kestemichtest reached. A hydrogen embrittlement to the coated surfaces do not occur.
  • the single figure shows a schematic representation of the sequence of an example Method according to the invention for applying an inorganic coating on an electrically conductive body.
  • the individual process steps distinguished by the reference numbers 1 to 6.
  • Reference number 1 denotes the first method step in which a Deploying the body is done.
  • Method step 2 consists of a optional degreasing and / or chemical pretreatment and / or blasting of the Body, e.g. sandblasting. If the body provided in step 1 is none this step 2 can be omitted.
  • next process step marked with the reference number 3 applying a coating medium to at least the one to be coated Surface area of the body.
  • the coating medium could also applied to surface areas of the body that are not to be coated be what a subsequent removal of the coating medium from the surface areas not to be coated.
  • the following inductive heating, identified by the reference number 4 at least the surface area of the body to be coated on a Reaction temperature could be before and / or during and / or after application of the coating medium.
  • the coating usually has a high thermal resistance up to approx. 350 ° C. Too high a temperature can destroy the coating. One too high temperature, especially over a long period of time, is also for heat-sensitive areas of the body to be coated harmful, so that the short-term treatment by induction is particularly advantageous here comes. In any case, care must be taken that a maximum temperature is not exceeded.
  • reaction takes place in method step 5 of the coating medium for coating.
  • Inductive heating enables with less effort compared to conventional air-conditioning technology rapid formation of a fully networked coating or protective layer.
  • This rapid reaction thermodynamics and kinetics cause the shortening of the Response time to achieve a significant increase in the crosslinking temperature a fully networked layer that only fully exhibits the properties mentioned having. Because too high a temperature to destroy the network or can lead to pigments and additives embedded in them is temperature control advantageous.
  • the body is cooled.
  • this can be done by passive cooling in, for example, ambient air or by means of active cooling using a special cooling medium like water or oil.
  • Inductive heating is ideal for the reaction of the coating media on partially coated, more or less large bodies, for Reaction of the entire coated body or also for coating Massengütem.
  • the method described is advantageous in that There is no need for multiple coatings due to imperfections and contact points.
  • the Spraying of preheated bulk goods while moving the bed is guaranteed when coating such bodies, a particularly uniform coating without missing parts.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Non-Insulated Conductors (AREA)
  • Glass Compositions (AREA)
EP97951074A 1996-11-13 1997-11-13 Verfahren zum aufbringen einer anorganischen beschichtung auf einen elektrisch leitfähigen körper Revoked EP0979317B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19646724 1996-11-13
DE19646724 1996-11-13
DE19703489A DE19703489A1 (de) 1996-11-13 1997-01-31 Verfahren zum Aufbringen einer anorganischen Beschichtung auf einen elektrisch leitfähigen Körper
DE19703489 1997-01-31
PCT/DE1997/002661 WO1998021382A2 (de) 1996-11-13 1997-11-13 Verfahren zum aufbringen einer anorganischen beschichtung auf einen elektrisch leitfähigen körper

Publications (2)

Publication Number Publication Date
EP0979317A2 EP0979317A2 (de) 2000-02-16
EP0979317B1 true EP0979317B1 (de) 2002-06-05

Family

ID=26031216

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97951074A Revoked EP0979317B1 (de) 1996-11-13 1997-11-13 Verfahren zum aufbringen einer anorganischen beschichtung auf einen elektrisch leitfähigen körper

Country Status (10)

Country Link
US (1) US6153270A (pt)
EP (1) EP0979317B1 (pt)
JP (1) JP3253977B2 (pt)
KR (1) KR100522663B1 (pt)
AT (1) ATE218628T1 (pt)
AU (1) AU5475998A (pt)
BR (1) BR9713354A (pt)
ES (1) ES2176806T3 (pt)
PT (1) PT979317E (pt)
WO (1) WO1998021382A2 (pt)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19648577B4 (de) * 1996-11-23 2005-08-18 Fag Kugelfischer Ag Verfahren zum Korrosionsschutz von Wälzlagern
US8044119B2 (en) * 1999-10-07 2011-10-25 James E. Landry Insulating material of epoxy compound, acrylic resin, ceramic particles and curing agent
US7250196B1 (en) 1999-10-26 2007-07-31 Basic Resources, Inc. System and method for plasma plating
US6503379B1 (en) * 2000-05-22 2003-01-07 Basic Research, Inc. Mobile plating system and method
US6521104B1 (en) 2000-05-22 2003-02-18 Basic Resources, Inc. Configurable vacuum system and method
JP3360731B2 (ja) * 2000-10-27 2002-12-24 日本電気株式会社 アレーアンテナ校正方法およびアレーアンテナ受信装置
FR2816641B1 (fr) * 2000-11-13 2003-08-01 Dacral Sa UTILISATION DE MoO3, COMME AGENT ANTICORROSION, ET COMPOSITION DE REVETEMENT CONTENANT UN TEL AGENT
FR2822727A1 (fr) * 2001-04-03 2002-10-04 Gesal Ind Procede d'application d'un revetement resistant aux hautes temperatures, dispositif pour la mise en oeuvre de ce procede et objet pourvu dudit revetement
US20070178236A1 (en) * 2001-12-20 2007-08-02 Larsen N T Method and apparatus for anti-corrosive coating
US20060000183A1 (en) * 2001-12-20 2006-01-05 Farwest Steel Corporation Method and apparatus for anticorrosive coating
US8067067B2 (en) * 2002-02-14 2011-11-29 Applied Materials, Inc. Clean, dense yttrium oxide coating protecting semiconductor processing apparatus
US20030180450A1 (en) * 2002-03-22 2003-09-25 Kidd Jerry D. System and method for preventing breaker failure
US7455732B2 (en) * 2004-08-13 2008-11-25 Ppg Industries Ohio, Inc. Apparatus and systems for coating objects
JP2006130384A (ja) * 2004-11-02 2006-05-25 Asama Giken Co Ltd 水性塗料の塗布乾燥方法及び装置
US10242888B2 (en) 2007-04-27 2019-03-26 Applied Materials, Inc. Semiconductor processing apparatus with a ceramic-comprising surface which exhibits fracture toughness and halogen plasma resistance
US10622194B2 (en) 2007-04-27 2020-04-14 Applied Materials, Inc. Bulk sintered solid solution ceramic which exhibits fracture toughness and halogen plasma resistance
US20090214825A1 (en) * 2008-02-26 2009-08-27 Applied Materials, Inc. Ceramic coating comprising yttrium which is resistant to a reducing plasma
US8137761B2 (en) * 2008-06-13 2012-03-20 Caterpillar Inc. Method of coating and induction heating a component
JP5540780B2 (ja) 2009-05-29 2014-07-02 住友電気工業株式会社 マグネシウム合金の線状体及びボルト、ナット並びにワッシャー
US9527109B2 (en) 2013-06-05 2016-12-27 General Electric Company Coating process and coated article
US9773583B2 (en) * 2014-04-24 2017-09-26 Essex Group, Inc. Continously transposed conductor

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US3619231A (en) * 1965-10-15 1971-11-09 Anchor Post Prod Continuous metal coating process with fusible pulverulent materials
DE4028198A1 (de) * 1989-09-20 1991-03-28 Mannesmann Ag Verfahren und vorrichtung zum aufbringen einer schutzschicht auf einem stahlrohr
EP0509374B1 (en) * 1991-04-18 1998-03-04 Alltrista Corporation Method and apparatus for drying and curing a coating of a metal substrate
DE4217754C2 (de) * 1992-05-29 1998-04-16 Horst Dr Rettenmaier Verfahren und Vorrichtung zum Pulverbeschichten
DE19623495A1 (de) * 1996-06-12 1997-12-18 Ema Elektro Maschinen Schultze Verfahren zum Beschichten eines Werkstücks

Also Published As

Publication number Publication date
US6153270A (en) 2000-11-28
EP0979317A2 (de) 2000-02-16
WO1998021382A3 (de) 1999-10-28
WO1998021382A2 (de) 1998-05-22
JP2001503478A (ja) 2001-03-13
AU5475998A (en) 1998-06-03
ES2176806T3 (es) 2002-12-01
KR100522663B1 (ko) 2005-10-19
KR20000053289A (ko) 2000-08-25
ATE218628T1 (de) 2002-06-15
PT979317E (pt) 2002-11-29
JP3253977B2 (ja) 2002-02-04
BR9713354A (pt) 2000-01-25

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