ES1252009U - PROTECTIVE COATING FOR CERAMIC ROLLERS (Machine-translation by Google Translate, not legally binding) - Google Patents
PROTECTIVE COATING FOR CERAMIC ROLLERS (Machine-translation by Google Translate, not legally binding) Download PDFInfo
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- ES1252009U ES1252009U ES202031260U ES202031260U ES1252009U ES 1252009 U ES1252009 U ES 1252009U ES 202031260 U ES202031260 U ES 202031260U ES 202031260 U ES202031260 U ES 202031260U ES 1252009 U ES1252009 U ES 1252009U
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- protective coating
- ceramic
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- ceramic rollers
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- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Tunnel Furnaces (AREA)
Abstract
Description
D E S C R I P C I Ó ND E S C R I P T I O N
RECUBRIMIENTO PROTECTOR PARA RODILLOS CERÁMICOSPROTECTIVE COATING FOR CERAMIC ROLLERS
OBJETO DE LA INVENCIÓNOBJECT OF THE INVENTION
La presente invención se refiere a un recubrimiento protector para su uso sobre rodillos cerámicos.The present invention relates to a protective coating for use on ceramic rollers.
Concretamente, el recubrimiento que se preconiza está aplicado sobre los rodillos cerámicos que se instalan en hornos cerámicos o monoestrato, de forma el recubrimiento protector desarrollado proporciona una resistencia al ataque químico y a elevadas temperaturas, que dentro de los mencionados hornos pueden llegar a ser de hasta 1400°C.Specifically, the recommended coating is applied on the ceramic rollers that are installed in ceramic or single-layer kilns, so the protective coating developed provides resistance to chemical attack and high temperatures, which within the aforementioned kilns can reach up to 1400 ° C.
ANTECEDENTES DE LA INVENCIÓNBACKGROUND OF THE INVENTION
En el estado de la técnica actual se conocen sobradamente los rodillos para hornos cerámicos y monoestrato que son utilizados para posibilitar el desplazamiento del material a producir en el interior del horno para la fabricación industrial de cualquier tipo material cerámico, tales como pavimentos y baldosas.In the current state of the art, the rollers for ceramic and single-layer kilns are widely known, which are used to allow the movement of the material to be produced inside the kiln for the industrial manufacture of any type of ceramic material, such as floors and tiles.
En este tipo de hornos es habitual que los rodillos se desgasten y sufran considerables deterioros por el ambiente químicamente agresivo combinado con las elevadas temperaturas. Es por ello, que habitualmente, en las paradas de los hornos sea necesario reemplazar los rodillos desgastados por otros nuevos, suponiendo un elevado desembolso.In this type of furnace, it is common for the rollers to wear out and suffer considerable damage due to the chemically aggressive environment combined with high temperatures. For this reason, it is usually necessary to replace worn rollers with new ones when stopping the furnaces, assuming a high outlay.
Alternativamente, se ha intentado la reparación de los rodillos desgastados instalados en los hornos cerámicos o monoestrato para evitar el coste de sustitución. Sin embargo, una de las desventajas que presenta esta opción es que los recubrimientos hasta el momento conocidos no soportan las altas temperaturas y, por su falta de adhesión completa a la superficie de los rodillos, se desprenden con facilidad. Igualmente, se ha intentado evitar esta problemática aplicando un espesor mayor de recubrimiento con el fin de que soporte mejor las altas temperaturas y el ataque químico. Sin embargo, los espesores de recubrimiento añadidos dificultan el correcto funcionamiento de los rodillos porque se generan desfases entre ellos por la falta de espacio.Alternatively, repair of worn rollers installed in ceramic or single layer kilns has been attempted to avoid replacement cost. However, one of the disadvantages of this option is that hitherto known coatings do not withstand high temperatures and, due to their lack of complete adhesion to the surface of the rollers, they come off easily. Likewise, an attempt has been made to avoid this problem by applying a thicker coating in order to better withstand high temperatures and chemical attack. However, the added coating thicknesses make it difficult for the rollers to function properly because they are they generate gaps between them due to lack of space.
Por todo lo anterior, el solicitante del presente modelo de utilidad detecta la necesidad de desarrollar un recubrimiento para rodillos de hornos monoestrato o cerámicos que permita soportar las condiciones adversas que se generan en los hornos durante su funcionamiento.For all of the above, the applicant of the present utility model detects the need to develop a coating for single-layer or ceramic kiln rollers that allows them to withstand the adverse conditions generated in the kilns during their operation.
DESCRIPCIÓN DE LA INVENCIÓNDESCRIPTION OF THE INVENTION
El recubrimiento protector para quemadores de rodillos cerámicos que se preconiza resuelve de forma plenamente satisfactoria la problemática anteriormente expuesta, ya que permite aplicar sobre un rodillo de material cerámico un recubrimiento novedoso e innovador que proporciona unas prestaciones mecánicas superiores que favorece su resistencia al ataque químico y a las elevadas temperaturas.The protective coating for ceramic roller burners that is recommended solves in a fully satisfactory way the problems previously exposed, since it allows to apply a new and innovative coating on a ceramic material roller that provides superior mechanical performance that favors its resistance to chemical attack and elevated temperatures.
Concretamente, se detalla a continuación el tratamiento que se realiza a los rodillos cerámicos de los hornos monoestrato o cerámicos para conseguir el acabado deseado. Para ello, se aplica sobre los rodillos cerámicos una capa o recubrimiento protector exterior formada por una mezcla homogénea la cual incluye, al menos, los siguientes componentes:Specifically, the treatment carried out on the ceramic rollers of the single-layer or ceramic furnaces to achieve the desired finish is detailed below. To do this, an outer protective layer or coating formed by a homogeneous mixture is applied on the ceramic rollers, which includes, at least, the following components:
- Alúmina con un porcentaje entre un 64% y 68%,- Alumina with a percentage between 64% and 68%,
- Sílice con un porcentaje entre un 28% y 30%, y- Silica with a percentage between 28% and 30%, and
- Óxido de hierro (III) con un porcentaje entre un 2% y un 8%,- Iron (III) oxide with a percentage between 2% and 8%,
Un de las relevantes ventajas que presenta el recubrimiento protector reside en que presenta una granulometría menor de 0.8 mm.One of the relevant advantages of the protective coating is that it has a particle size of less than 0.8 mm.
La aplicación de este recubrimiento protector ofrece al rodillo cerámico las siguientes propiedades ventajosas:The application of this protective coating offers the ceramic roller the following advantageous properties:
- Soportan elevadas temperaturas, de hasta 2500°C.- They withstand high temperatures, up to 2500 ° C.
- Aumentan la resistencia de ataque químico y la erosión que generalmente tiene lugar en el interior del horno.- Increase resistance to chemical attack and erosion that generally takes place inside the kiln.
- Evitan su rotura y, la posible adherencia de esmalte en los poros.- They prevent breakage and the possible adhesion of enamel in the pores.
Por todo lo anterior, la aplicación del recubrimiento protector descrito en la presente solicitud de modelo de utilidad es muy ventajosa ya que permite alargar la vida útil de los rodillos cerámicos en un estado óptimo, sin quedar afectados por las condiciones adversas presentes en un horno monoestrato o cerámico durante su funcionamiento.For all the above, the application of the protective coating described in the present application utility model is very advantageous since it allows to extend the useful life of ceramic rollers in an optimal state, without being affected by the adverse conditions present in a single-layer or ceramic kiln during its operation.
REALIZACION PREFERENTEPREFERRED REALIZATION
En una realización preferente de la presente invención, el recubrimiento protector se aplica sobre el rodillo cerámico durante las paradas de los hornos monoestrato o cerámicos.In a preferred embodiment of the present invention, the protective coating is applied to the ceramic roller during shutdowns of the single-layer or ceramic kilns.
A continuación, se describe el procedimiento seguido para obtener el acabado deseado:The procedure followed to obtain the desired finish is described below:
- En primer lugar, el recubrimiento protector de la invención es sometido a un exhaustivo sistema de filtrado a través de una pluralidad de vibro-tamices, cuya función principal es la eliminación de las posibles partículas de pintura presentes en el recubrimiento.- In the first place, the protective coating of the invention is subjected to an exhaustive filtering system through a plurality of vibro-sieves, whose main function is the elimination of possible paint particles present in the coating.
De esta forma, en la realización preferente de la invención, el recubrimiento protector obtenido está integrado por una mezcla homogénea de los siguientes componentes: preferentemente, de un 65% de alúmina, un 29% de sílice y, un 6% de óxido de hierro (III). Así, el recubrimiento protector presenta una granulometría menor de 0.8 mm.Thus, in the preferred embodiment of the invention, the protective coating obtained is made up of a homogeneous mixture of the following components: preferably 65% alumina, 29% silica and 6% iron oxide. (III). Thus, the protective coating has a granulometry of less than 0.8 mm.
- Una vez preparada la mezcla homogénea del recubrimiento de la invención, se procede a su aplicación sobre los rodillos cerámicos. Concretamente, es recomendable que los rodillos se encuentren en rotación continua para aplicar correctamente el recubrimiento protector y así obtener un espesor menor de 1 mm, estando aplicado en forma de capa sobre los rodillos cerámicos.- Once the homogeneous mixture of the coating of the invention has been prepared, it is applied on the ceramic rollers. Specifically, it is recommended that the rollers are in continuous rotation to correctly apply the protective coating and thus obtain a thickness of less than 1 mm, being applied as a layer on the ceramic rollers.
- Seguidamente, los rodillos cerámicos tratados con el recubrimiento protector desarrollado son trasladados e instalados en los hornos monoestrato o cerámicos durante las paradas de éstos.- Next, the ceramic rollers treated with the developed protective coating are transferred and installed in the single-layer or ceramic kilns during their shutdowns.
- Finalmente, cuando se realice el encendido del horno con la curva habitual, tendrá lugar el último paso del procedimiento. Concretamente, el recubrimiento protector aplicado sobre los rodillos cerámicos se adhiere totalmente a la superficie del rodillo, debido al calor del encendido del horno, generando una capa superficial totalmente homogénea y solidaria al propio rodillo.- Finally, when the oven is switched on with the usual curve, the last step of the procedure will take place. Specifically, the protective coating applied to the ceramic rollers, it fully adheres to the surface of the roller, due to the heat of the furnace ignition, generating a surface layer that is completely homogeneous and integral with the roller itself.
El resultado obtenido del proceso detallado anteriormente son rodillos con un recubrimiento protector que presenta un espesor de menos de 1 mm cuya función esencialmente es ralentizar la adherencia de suciedad en los poros de los rodillos cerámicos, ofrecer una elevada resistencia a ataques químicos y soportar elevadas temperaturas.The result obtained from the process detailed above are rollers with a protective coating that has a thickness of less than 1 mm whose function is essentially to slow down the adhesion of dirt in the pores of the ceramic rollers, offer high resistance to chemical attacks and withstand high temperatures. .
Ventajosamente, el coeficiente de dilatación de la capa de recubrimiento protector coincide con el coeficiente de dilatación del material que integra los rodillos de los hornos monoestrato o cerámicos, consiguiendo así una mejora de las capacidades mecánicas y un comportamiento análogo frente a las elevadas temperaturas. Advantageously, the coefficient of expansion of the protective coating layer coincides with the coefficient of expansion of the material that integrates the rollers of single-layer or ceramic furnaces, thus achieving an improvement in mechanical capacities and a similar behavior in the face of high temperatures.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES202031260U ES1252009Y (en) | 2020-06-15 | 2020-06-15 | PROTECTIVE COATING FOR CERAMIC ROLLERS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES202031260U ES1252009Y (en) | 2020-06-15 | 2020-06-15 | PROTECTIVE COATING FOR CERAMIC ROLLERS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES1252009U true ES1252009U (en) | 2020-08-28 |
| ES1252009Y ES1252009Y (en) | 2020-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES202031260U Active ES1252009Y (en) | 2020-06-15 | 2020-06-15 | PROTECTIVE COATING FOR CERAMIC ROLLERS |
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| ES (1) | ES1252009Y (en) |
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- 2020-06-15 ES ES202031260U patent/ES1252009Y/en active Active
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| Publication number | Publication date |
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| ES1252009Y (en) | 2020-11-18 |
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