{"id":5308,"date":"2020-09-29T01:53:08","date_gmt":"2020-09-29T01:53:08","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=5308"},"modified":"2020-09-29T01:53:58","modified_gmt":"2020-09-29T01:53:58","slug":"mold-coating","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/mold-coating\/","title":{"rendered":"Recubrimiento de moldes"},"content":{"rendered":"

En una fundici\u00f3n concreta, si el recubrimiento del molde se selecciona adecuadamente, la operaci\u00f3n de aplicaci\u00f3n resulta estable y controlada. En teor\u00eda, se pueden obtener piezas fundidas que cumplan los requisitos. Sin embargo, en el proceso real de fundici\u00f3n, la operaci\u00f3n de aplicaci\u00f3n suele considerarse el eslab\u00f3n m\u00e1s variable. Por lo tanto, es muy importante preparar cuidadosamente el molde antes del recubrimiento, as\u00ed como preparar el recubrimiento y elegir las herramientas de aplicaci\u00f3n que se vayan a utilizar.<\/p>\n

El sustrato sobre el que se aplica el recubrimiento es extremadamente importante para el rendimiento del mismo. El molde nuevo debe limpiarse a fondo antes de la aplicaci\u00f3n para eliminar toda la grasa lubricante y las manchas de \u00f3xido. El recubrimiento original del molde usado debe eliminarse por completo. El m\u00e9todo tradicional de limpieza del molde consiste en utilizar un cepillo de alambre para eliminar la suciedad superficial. Este m\u00e9todo suele provocar un desgaste excesivo de la superficie del molde o generar peque\u00f1as grietas en la misma. Por ello, se buscan nuevos m\u00e9todos de limpieza no destructivos para limpiar superficies met\u00e1licas.<\/p>\n

El molde limpio debe calentarse de manera uniforme hasta alcanzar una temperatura de entre 300 y 350 \u00b0C aproximadamente. Para el calentamiento se suelen utilizar quemadores de gas, con el fin de que la llama se distribuya de manera uniforme por todas las partes del molde.<\/p>\n

Al aplicar el recubrimiento, normalmente se debe enfriar primero la temperatura del molde hasta unos 180 \u00b0C, y para la capa base se suele utilizar una soluci\u00f3n acuosa que contenga un tensioactivo o un recubrimiento muy diluido, lo que puede mejorar la adherencia del recubrimiento a la superficie del molde.<\/p>\n

Antes de aplicar el recubrimiento del molde, se debe remover bien la pintura original y diluirla hasta alcanzar la concentraci\u00f3n y la viscosidad requeridas. Si el tiempo de aplicaci\u00f3n es prolongado, durante el proceso de aplicaci\u00f3n es necesario medir y ajustar peri\u00f3dicamente la viscosidad y la concentraci\u00f3n del recubrimiento, el espesor del recubrimiento y la temperatura del molde.<\/p>\n

\"Recubrimiento<\/p>\n

Nuestra empresa, AdTech, ofrece recubrimientos para moldes, entre los que se incluyen recubrimientos de nitruro de boro, materiales de reparaci\u00f3n de mortero refractario y recubrimientos para moldes de lingotes de aluminio.<\/p>\n

Recubrimiento de nitruro de boro<\/a> (Serie BN): Se trata de un tipo de recubrimiento protector l\u00edquido de nitruro de boro activo con buenos resultados. Se puede mezclar con agua y aplicar sobre revestimientos de s\u00edlice fundida, tubos de nivel, materiales refractarios moldeados, revestimientos de ladrillo, flotadores, canales de flujo, diversas superficies de cucharas de colada y herramientas met\u00e1licas; resulta especialmente adecuado para la superficie de productos cer\u00e1micos como discos de derivaci\u00f3n, canales de colada, cajas de filtro y cajas de desgasificaci\u00f3n para la colada de \u00abhot top\u00bb, y ofrece un buen efecto protector como recubrimiento antiadherente para el aluminio.<\/p>\n

Mortero refractario<\/a> Material de reparaci\u00f3n: un material de moldeo y relleno blanco muy adecuado para la industria de la colada en caliente. Se puede utilizar ampliamente en el relleno de los canales de colada y las placas de derivaci\u00f3n de aluminio l\u00edquido, as\u00ed como material de relleno. Tambi\u00e9n se puede emplear ampliamente en diversos materiales refractarios cer\u00e1micos que entran en contacto con el aluminio fundido, y ofrece un buen efecto de conservaci\u00f3n del calor y sellado. Se puede utilizar como material de reparaci\u00f3n y sellado para el revestimiento de hornos o placas refractarias. Tambi\u00e9n se puede emplear para rellenar la capa protectora de la cuchara de colada autom\u00e1tica.<\/p>\n

Caracter\u00edsticas del aluminio recubrimiento del molde para lingotes<\/a>:<\/p>\n

    \n
  1. Protege los moldes met\u00e1licos y alarga su vida \u00fatil.<\/li>\n
  2. Facilita el desmoldeo de las piezas fundidas y evita la adherencia y la acumulaci\u00f3n de \u00f3xido.<\/li>\n
  3. Controlar el flujo de calor que se transfiere de la aleaci\u00f3n de fundici\u00f3n al molde met\u00e1lico.<\/li>\n
  4. Mejorar el acabado superficial de las piezas fundidas.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"

    For a specific casting, if the mold coating is selected properly, the application operation is stable and controlled. In theory, qualified castings can be obtained.…<\/p>","protected":false},"author":1,"featured_media":5309,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5308","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nMold Coating used for Metal Casting | Boron Nitride Coating<\/title>\n<meta name=\"description\" content=\"AdTech provides mold coating, including boron nitride coatings, refractory mortar repair materials, aluminum ingot mold coatings.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alalloycasting.com\/es\/mold-coating\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mold 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