• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method for applying a coating to a metal surface, wherein the coating has anti-corrosion and / or fire-retardant properties and the coating is heated before it is applied to the surface.
    公开号:BE1022791B1
    申请号:E2015/5661
    申请日:2015-10-15
    公开日:2016-09-06
    发明作者:Anthony Geerinckx
    申请人:BUIJSSE INTERNATIONAL nv；
    IPC主号:
    专利说明:

    METHOD FOR APPLYING A COATING TO ONE
    METAL SURFACE
    This invention relates to a method for applying a coating to a metal surface, wherein the coating has anti-corrosion and / or fire-retardant properties.
    When applying a coating to a metal surface, it is important that the coating adheres well to the surface. To make the adhesion as optimal as possible, the metal surface is often treated prior to applying the coating. For example, the metal surface can be cleaned, blasted or sanded, etc.
    Methods already exist in which the metal object is additionally heated up before the coating is applied. By heating the metal object, the surface also heats up. A coating adheres better to a warm surface. The drying times are also becoming shorter. The disadvantage here is that the strength of the metal object decreases due to this heat treatment.
    It is therefore an object of the invention to provide a method for applying a coating to a metal surface, wherein the coating has anti-corrosion and / or fire-retardant properties, wherein the drying times are shortened and wherein the strength of the object to be coated is comprising the metal surface remains protected.
    This object is achieved by providing a method for applying a coating to a metal surface, wherein the coating has anti-corrosion and / or fire-retardant properties and wherein the coating is heated before it is applied to the surface. This coating may or may not be applied directly to the metal surface. For example, a different coating may already have been applied to the metal surface before this coating with anti-corrosion and / or fire-retardant properties is applied. By heating the coating prior to application, ie by applying a warm coating to the metal surface, the coating will adhere better and faster to the surface. The object comprising the metal surface must not be heated here, so that the strength of the object does not decrease either. The drying times are also shortened by working with a heated coating.
    The coating is preferably heated to a temperature between 60 ° C and 100 ° C. The coating that is then applied to the metal surface is sufficiently warm here to ensure good adhesion to the metal surface. It is also not too hot, so that the object comprising the metal surface does not heat up too strongly due to the application of the coating and thus does not decrease the strength of the object. The coating itself does not have to be heated to temperatures of more than 100 ° C, so that the quality of the coating itself does not decrease, and the coating retains its good anti-corrosion and / or fire-resistant properties. When the coating reaches the surface of the metal surface, during the application of the coating, its temperature may be between 60 ° C and 100 ° C, but its temperature may also have already cooled to, for example, temperatures between 40 ° C and 80 ° C. Whether the coating cools during its application to the metal surface depends, among other things, on the method of application. In the existing method where the object is heated, the object is heated to temperatures of more than 100 ° C. This of course requires more energy than heating a coating to a temperature between 60 ° C and 100 ° C, since the object must be heated to higher temperatures and also because the object usually has a greater mass than the coating to be applied.
    In a preferred embodiment, to apply the coating to the surface, the coating is sprayed onto the surface. This is, for example, easy with the aid of a spraying installation. Spraying can be electrostatic spraying. By spraying the coating on the surface, it is easy to ensure that the coating is applied evenly and properly to the surface. By spraying the coating, the coating will also be able to adhere well to the object. The application of the coating can for instance take place in a (partially) closed space such as a spray booth. In a (partially) enclosed space, the environmental conditions can be properly monitored, so that the coating can be applied as ideally as possible. With the help of a spraying installation, the coating can also be sprayed according to a continuous process. The object with the surface to be coated can thus be brought into a spraying space comprising the spraying installation with the aid of a conveyor belt and then be transported through this spraying space or other transport means through this spraying space.
    In an alternative embodiment, in order to apply the coating to the surface, the coating is lubricated on the surface with the aid of, for example, a brush. In another alternative embodiment, to apply the coating to the surface, the article comprising the metal surface can be immersed in a reservoir comprising the coating. This reservoir is then preferably heated here.
    Preferably, in the preferred embodiment, the coating is sprayed onto the surface by means of a spraying installation, wherein the spraying installation comprises one or more heating means for heating the coating. By working with a spraying installation that comprises one or more heating means, it is easy to heat up the coating before it is applied. However, the spraying installation can also be provided for drawing in a coating from a separate reservoir, wherein this reservoir then comprises, for example, the heating means or is provided for being heated by an external energy source.
    The spraying installation further preferably comprises a spraying nozzle, provided to spray the coating on the surface, the spraying nozzle comprising at least one of the heating means. The coating will pass through the spray nozzle during the application of the coating to the surface. Because the heating means are located in the spray nozzle, it is easy to heat the coating that passes through the spray nozzle.
    Even more preferably, the spray nozzle comprises a tube through which the coating is provided to pass and at least one of the heating means is capable of heating this tube. By heating the tube through which the coating passes, the coating that passes through the tube will also heat up. At least one of the heating means can thus extend around the tube. The coating is evenly heated with the help of a heated tube. The coating is preferably heated only when it is in the tube. Then the coating is only heated when it is effectively sprayed on the surface. If one then works with a reservoir in which the coating is located, the coating that is in the reservoir will not have to be re-heated each time. It requires less energy to heat up a small amount of coating, moreover, the quality of the coating in the reservoir cannot decrease due to heating.
    In a preferred embodiment the heating means comprise resistance wire. The coating can easily be heated with the help of resistance wire. Resistance wire also takes up little volume so that the spraying installation can be made compact.
    In another embodiment, the heating means comprise one or more tubes of liquid, and the heating means also comprise one or more heating elements for heating the liquid. With the aid of tubes containing heated liquid, it is easy to heat up the coating, without the risk that the coating that is closest to the tubes runs the risk of being heated up too strongly. With the help of these heated liquid tubes, the coating is also heated up evenly, so that the coating that reaches the metal surface almost always has the same temperature. The heating means can of course also comprise both resistance wire and tubes comprising liquid that is heatable.
    In a specific embodiment, the coating is sprayed onto the surface with the aid of a spraying installation, wherein this spraying installation uses compressed air to spray the coating onto the surface and wherein at least one of the heating means is capable of heating this compressed air. By working with heated compressed air, it can be ensured that the coating leaving the spraying installation does not cool down too much before the coating reaches the surface to which it must adhere. This is because the heated compressed air will surround the coating in the time period between leaving the spraying installation and reaching the surface. With a cooler ambient air, the compressed air here will ensure that the coating cannot cool or can only cool slightly under the influence of the ambient air. In a specific embodiment, the temperature of the compressed air is substantially the same as the temperature of the coating at the moment that this coating leaves the spraying installation. Since the temperature of the compressed air is not higher than the temperature of the coating, the coating will not heat up further due to the compressed air. However, the compressed air can also be heated to a temperature that is higher than the temperature of the coating when this coating leaves the spraying installation. When the ambient temperature is much lower than the stated temperature of the coating, the compressed air will cool down when it comes into contact with the ambient temperature.
    In another embodiment, wherein the coating is sprayed onto the surface by means of a spraying installation, the spraying installation can comprise a reservoir in which the coating is stored, the heating means being located in and / or around the reservoir.
    For example, it is also possible to use spraying installations in which both the compressed air, the reservoir and the spraying nozzle are heated.
    The coating preferably comprises metal particles. The coating has a very good anti-corrosion effect due to the metal particles. Furthermore, preferably these metal particles are zinc particles.
    In a preferred embodiment, the metal surface is a steel surface. Steel is widely used in residential and industrial construction to provide strength to structures. However, steel is sensitive to corrosion. In the event of a fire it is important that this steel does not heat up too quickly, so that the robustness of the structures is not compromised. It is therefore important to coat steel with a coating that has anti-corrosion and / or fire-retardant properties.
    The metal surface can be, for example, a surface of reinforcement, a support beam, a chassis, a tube or a pole.
    Preferably, prior to applying the coating to the metal surface, the metal surface is cleaned. A coating will adhere better to a cleaned surface. For example, the surface can be blasted / sanded to smooth the surface. Any rust is removed with this. It is also possible to degrease the metal surface, dust off, etc.
    The present invention will now be further elucidated with reference to the following detailed description of a preferred embodiment of a method according to the present invention. The purpose of this description is to give only illustrative examples and to indicate further advantages and details of this method, and thus can in no way be interpreted as a limitation of the scope of the invention or of the patent rights claimed in the claims.
    This embodiment relates to a method for applying a coating to the outer surface of a steel pipe, wherein the coating has anti-corrosion and / or fire-retardant properties. The coating comprises zinc particles and is sprayed onto the surface using a spraying installation.
    The steel surface is thoroughly cleaned prior to applying the coating. First, the surface is blasted to remove rust particles and to make the surface smooth. The surface is then dusted and degreased.
    The spraying installation comprises a reservoir, a spray nozzle and a tube for sucking coating from the reservoir to the spray nozzle. This tube passes centrally through the spray nozzle and ends in the outside environment. The coating is applied in the reservoir and is then sucked in from the reservoir and then sprayed onto the surface with the aid of the spray nozzle. The spraying installation further comprises heating means which are arranged in the spraying nozzle around the tube and are provided for heating the tube, and thus the coating which passes through the tube. These heating means comprise resistance wire and / or tubes that are filled with heatable liquid. Here only the coating that enters the tube is heated, so that little energy is needed.
    The heating means are provided to heat up the coating to a temperature of +/- 80 ° C. The coating is sprayed from the tube using compressed air. This compressed air may also be heated to prevent the coating from cooling down too much after leaving the spray nozzle and before the coating reaches the surface.
    权利要求:
    Claims (15)
    [1]
    C O N C L U S I E S
    A method for applying a coating to a metal surface, wherein the coating has anti-corrosion and / or fire-retardant properties, characterized in that the coating is heated before it is applied to the surface.
    [2]
    Method according to claim 1, characterized in that the coating is heated to a temperature between 60 ° C and 100 ° C.
    [3]
    Method according to claim 1 or 2, characterized in that in order to apply the coating to the surface, the coating is sprayed onto the surface.
    [4]
    Method according to claim 3, characterized in that the coating is sprayed onto the surface with the aid of a spraying installation, wherein the spraying installation comprises one or more heating means for heating the coating.
    [5]
    5. Method as claimed in claim 4, characterized in that the spraying installation comprises a spraying nozzle, provided for spraying the coating on the surface, wherein the spraying nozzle comprises at least one of the heating means.
    [6]
    Method according to claim 5, characterized in that the spray nozzle comprises a tube through which the coating is provided to pass and that at least one of the heating means is capable of heating this tube.
    [7]
    Method according to claim 6, characterized in that at least one of the heating means extends around the tube.
    [8]
    Method according to one of claims 4 to 7, characterized in that the heating means comprise resistance wire.
    [9]
    A method according to any of claims 4 to 8, characterized in that the heating means comprise one or more tubes of liquid, and the heating means also comprise one or more heating elements for heating the liquid.
    [10]
    Method according to one of claims 3 to 9, characterized in that the coating is sprayed onto the surface with the aid of a spraying installation, wherein this spraying installation uses compressed air to spray the coating onto the surface and that at least one of the heating means is capable of heating this compressed air.
    [11]
    Method according to one of the preceding claims, characterized in that the coating comprises metal particles.
    [12]
    A method according to claim 11, characterized in that the metal particles are zinc particles.
    [13]
    Method according to one of the preceding claims, characterized in that the metal surface is a steel surface.
    [14]
    Method according to any of the preceding claims, characterized in that the metal surface is a surface of reinforcement, a support beam, a chassis, a tube or a pole.
    [15]
    Method according to one of the preceding claims, characterized in that the metal surface is cleaned prior to applying the coating to the metal surface.
    类似技术:
    公开号 | 公开日 | 专利标题
    JP2013500154A|2013-01-07|Method and apparatus for applying at least one anticorrosive liquid coating comprising metal particles to a workpiece.
    US20150328654A1|2015-11-19|Coating system for coating objects
    BE1022791B1|2016-09-06|Method for applying a coating to a metal surface
    MX2015015123A|2016-06-24|Coating apparatus with half open loop.
    KR101811801B1|2017-12-22|Circular type polymer coating device for pipe
    KR101899844B1|2018-09-19|Powder coating system using zinc primer and powder coating method thereof
    US10618244B2|2020-04-14|Pipe product and method for producing same
    US20160288152A1|2016-10-06|Method and application device for the application of an aqueous treatment solution to the surface of a moving strip
    CN110284137A|2019-09-27|A kind of surface treatment method of the stainless steel sandblasting envelope enamel lamella of wear-resistant resistant
    RU2659547C1|2018-07-02|Method for producing anti-corrosive coating on a metallic product |
    US260020A|1882-06-27|Art of attaching rubber to metals
    JP2018095892A|2018-06-21|Hot-dip galvanized steel tube and method of manufacturing hot-dip galvanized steel tube
    KR101549091B1|2015-09-01|Apparatus For Continuous Zinc Flake Coating
    DE102020104896A1|2021-08-26|Method and arrangement for painting treatment of motor vehicle bodies
    Stopka2015|Technological Process Applied for the Coating the Pipe Profiles in the Manufacturing Industry
    JP6084253B2|2017-02-22|Continuous coating equipment
    KR20200011698A|2020-02-04|Method of powder coating a welded structure and work
    JP4916618B2|2012-04-18|Coating method of sprayed metal layer surface
    PL234275B1|2020-01-31|Method of powder painting of hot galvanized steel elements
    AU2005100251A4|2005-04-21|Method of treating metal surfaces
    MX360692B|2018-11-14|Coat drying device and coat drying method.
    US10040955B2|2018-08-07|Method for removing substrates provided with organic coatings
    HUE032080T2|2017-08-28|Treatment assembly with heat recovery
    NL1036248C2|2010-05-28|BRUSH ELEMENT FOR APPLICATION WITH A ROTATING BRUSH.
    PL3592878T3|2021-06-28|Hot-dip galvanizing method, carrying and/or holding means for the hot-dip galvanizing and method of coating the carrying and/or holding means
    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    [返回顶部]