{"id":3217,"date":"2020-07-31T09:17:43","date_gmt":"2020-07-31T09:17:43","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=3217"},"modified":"2020-10-19T08:44:47","modified_gmt":"2020-10-19T08:44:47","slug":"slab-bending-treatment-measures","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/slab-bending-treatment-measures\/","title":{"rendered":"Medidas para el tratamiento del pandeo de losas"},"content":{"rendered":"<p>En funci\u00f3n de la causa de la flexi\u00f3n de la losa plana, tras un debate y un an\u00e1lisis, hemos adoptado las siguientes medidas correctoras:<\/p>\n<p>1. Aumentar la superficie de apoyo del cabezal de la barra ficticia hasta la parte inferior de la losa plana. Se han adoptado dos medidas principales para el tratamiento de la flexi\u00f3n de la losa:<\/p>\n<ul>\n<li>De 3 mm de grosor <a href=\"http:\/\/www.alalloycasting.com\/es\/ceramic-insulation-board\/\">placa de fibra de silicato de aluminio<\/a> Se coloca en el centro de la cabeza del lingote ficticio, cubriendo aproximadamente la mitad de su superficie.<\/li>\n<li>En la fase final de la lingotaci\u00f3n plana, reducir la intensidad del enfriamiento y prolongar el tiempo de enfriamiento y solidificaci\u00f3n puede reducir el<br \/>\nreducir la tensi\u00f3n por contracci\u00f3n y aumentar el suministro de aluminio fundido. El arco circular de la parte inferior del lingote plano se suaviza, aumenta la superficie de contacto entre la parte inferior y la cabeza de apoyo, y se ampl\u00eda la superficie de apoyo en la parte inferior.<\/li>\n<\/ul>\n<p>2. Para evitar fugas de aluminio en la parte inferior central del lingote plano, es necesario adoptar medidas preventivas exhaustivas. Estas medidas incluyen principalmente:<\/p>\n<ul>\n<li>Reducci\u00f3n de la temperatura de fundici\u00f3n: tomando como ejemplo el lingote plano de aleaci\u00f3n de aluminio 3003, la temperatura de fundici\u00f3n se reduce de 690 \u2103 a 700 \u2103, pasando a un rango de 680 \u2103 \u2013 690 \u2103.<\/li>\n<li>En la fase inicial de la fundici\u00f3n, se puede controlar la distribuci\u00f3n del suministro de aluminio l\u00edquido y desviar el aluminio fundido a alta temperatura desde el centro hacia la periferia mediante una pala para escoria de aluminio especialmente alargada, con el fin de reducir el impacto t\u00e9rmico del aluminio l\u00edquido a alta temperatura sobre la parte m\u00e1s vulnerable del proceso de solidificaci\u00f3n, es decir, la zona central de la parte inferior del lingote plano.<\/li>\n<li>El tiempo de solidificaci\u00f3n en la parte inferior del lingote de losa debe prolongarse adecuadamente, y deben retrasarse los tiempos de inicio y de descenso.<\/li>\n<li>Al inicio del vertido, la velocidad de descenso se reduce de 40 ~ 45 mm\/min a 35 ~ 40 mm\/min, etc.<\/li>\n<\/ul>\n<p>3. Dado que la limpieza del agua de refrigeraci\u00f3n est\u00e1 relacionada con la aparici\u00f3n de deformaciones lentas, deben adoptarse las medidas necesarias para garantizar la limpieza del agua de refrigeraci\u00f3n y evitar que los orificios de la camisa de agua del molde se obstruyan con sedimentos y otras impurezas. Limpie peri\u00f3dicamente los sedimentos del pozo de agua fr\u00eda, rellene con agua limpia y fresca a tiempo y filtre el agua de refrigeraci\u00f3n antes de que entre en la camisa de agua.<\/p>\n<p>4. Realizar los preparativos antes de la fundici\u00f3n. Por ejemplo, comprobar que el orificio de agua de la camisa de agua del molde no est\u00e9 obstruido, ni por sedimentos ni por otras impurezas. Si el orificio est\u00e1 obstruido, debe desatascarse con un alambre fino. Comprobar con un nivel que la cabeza de la barra ficticia est\u00e9 colocada de forma estable. Si la cabeza de la barra ficticia no est\u00e1 colocada de forma estable, se puede recurrir al m\u00e9todo de introducir una fina l\u00e1mina de cobre entre la cabeza de la barra ficticia y la base para ajustarla hasta que la niveladora indique que est\u00e1 estable. Cabe destacar especialmente que la barra ficticia debe rellenarse al introducir la fina l\u00e1mina de cobre.<\/p>","protected":false},"excerpt":{"rendered":"<p>According to the cause of the flat slab bending, we have taken the following treatment measures through discussion and analysis: 1. Increase the support area&hellip;<\/p>","protected":false},"author":1,"featured_media":3221,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[1760],"class_list":["post-3217","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-slab-bending-treatment-measures-for-aluminum-casting"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Slab Bending Treatment Measures for Aluminum Casting<\/title>\n<meta name=\"description\" content=\"Slab Bending Treatment Measures: Increase the support area of the dummy bar head to the bottom, prevent aluminum leakage.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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