{"id":5463,"date":"2020-10-11T08:05:45","date_gmt":"2020-10-11T08:05:45","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=5463"},"modified":"2020-10-11T08:05:45","modified_gmt":"2020-10-11T08:05:45","slug":"insulating-materials","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/insulating-materials\/","title":{"rendered":"Materiales aislantes"},"content":{"rendered":"

Existen muchos tipos de materiales aislantes. Seg\u00fan la temperatura de funcionamiento, se pueden clasificar en tres categor\u00edas: materiales aislantes para altas temperaturas (por encima de 1200 \u2103), materiales aislantes para temperaturas medias (entre 900 y 1100 \u2103) y materiales aislantes para bajas temperaturas (por debajo de 900 \u2103).<\/p>\n

1. Material aislante para altas temperaturas<\/p>\n

Los denominados materiales de aislamiento t\u00e9rmico para altas temperaturas son materiales de aislamiento t\u00e9rmico ligeros materiales refractarios<\/a>, como ladrillos de arcilla ligeros, ladrillos ligeros de alta al\u00famina, ladrillos ligeros de al\u00famina, ladrillos ligeros de s\u00edlice, bolas huecas refractarias de al\u00famina y diversos productos de fibra refractaria. .<\/p>\n

2. Material aislante para temperaturas medias
\nLos denominados \u00abmateriales aislantes de temperatura media\u00bb son, por ejemplo, los ladrillos aislantes ultraligeros de perlita o las part\u00edculas aislantes de perlita, los ladrillos de vidrio soluble, los ladrillos ultraligeros de alta al\u00famina, etc.<\/p>\n

3. Material aislante para bajas temperaturas
\nLos denominados materiales aislantes para bajas temperaturas son, por ejemplo, los ladrillos de tierra de diatomeas, el amianto, la escoria, etc.<\/p>\n

\"Materiales<\/p>\n

En cuanto a la temperatura de uso de los materiales aislantes, hay que tener en cuenta los siguientes puntos:
\n(1) Salvo algunos ladrillos refractarios ligeros que pueden utilizarse como revestimiento de hornos en determinadas condiciones, el resto de ladrillos aislantes solo pueden colocarse sobre la capa exterior de ladrillos refractarios. Dado que el ladrillo aislante no es un material refractario, no puede soportar los efectos f\u00edsicos y qu\u00edmicos a altas temperaturas y no debe superar la temperatura de uso admisible para evitar el deterioro y la p\u00e9rdida del aislamiento.
\n(2) La resistencia a la compresi\u00f3n de diversos ladrillos aislantes es baja, por lo que es necesario dejar suficientes juntas de dilataci\u00f3n durante la construcci\u00f3n de la mamposter\u00eda para evitar la expansi\u00f3n y la extrusi\u00f3n de la misma a altas temperaturas. En el dise\u00f1o, debe dejarse un espacio adecuado entre la capa aislante y la chapa de acero de la envolvente del horno, y deben introducirse materiales aislantes en polvo para ampliar el cuerpo del horno.
\n(3) Los ladrillos aislantes no pueden soportar cargas pesadas. A excepci\u00f3n de su propio peso, el peso del horno no puede apoyarse sobre el ladrillo resistente a altas temperaturas.
\n(4) El material aislante presenta numerosos poros y su porosidad suele ser superior a 70%, por lo que absorbe f\u00e1cilmente la humedad. Algunos elementos calefactores el\u00e9ctricos del horno el\u00e9ctrico son alambres de molibdeno, y estos se oxidan f\u00e1cilmente por el vapor de agua que se evapora de los materiales del horno a altas temperaturas. Por supuesto, se pueden establecer requisitos estrictos para el horno de calentamiento, pero lo m\u00e1s importante es utilizar, en la medida de lo posible, materiales secos para el horno de calentamiento.<\/p>","protected":false},"excerpt":{"rendered":"

There are many types of insulating materials. According to the different working temperature, it can be divided into three categories: high temperature (above 1200\u2103) insulation…<\/p>","protected":false},"author":1,"featured_media":5464,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5463","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nInsulating Materials for Metal Casting | Refractory Fiber Cone<\/title>\n<meta name=\"description\" content=\"There are many types of insulating materials. 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