{"id":10131,"date":"2021-08-30T06:20:27","date_gmt":"2021-08-30T06:20:27","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10131"},"modified":"2021-08-30T06:20:27","modified_gmt":"2021-08-30T06:20:27","slug":"guide-furnace","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/guide-furnace\/","title":{"rendered":"Forno-guia"},"content":{"rendered":"

O forno de condu\u00e7\u00e3o \u00e9 o processo de transporte da massa fundida, com composi\u00e7\u00e3o e temperatura ajustadas, do forno de fus\u00e3o para o forno de manuten\u00e7\u00e3o est\u00e1tico.<\/p>\n

Os m\u00e9todos de forno-guia incluem o m\u00e9todo do tubo de fluxo e o m\u00e9todo de inclina\u00e7\u00e3o.<\/strong><\/p>\n

O m\u00e9todo do tubo de fluxo \u00e9 utilizado quando h\u00e1 um espa\u00e7o entre o forno de fus\u00e3o e o forno de manuten\u00e7\u00e3o est\u00e1tico. Com a ajuda da diferen\u00e7a de n\u00edvel entre o forno de fus\u00e3o e o forno de manuten\u00e7\u00e3o est\u00e1tico e da press\u00e3o est\u00e1tica da massa fundida, esta \u00e9 transportada para o forno de manuten\u00e7\u00e3o est\u00e1tico ao longo do tubo de fluxo.<\/p>\n

1. Requisitos para tubo de fluxo<\/a>. O comprimento do tubo de fluxo deve ser compat\u00edvel com a queda entre os dois fornos: o di\u00e2metro interno do tubo de fluxo deve ser ligeiramente maior do que o tamanho do orif\u00edcio de fluxo do forno de fus\u00e3o. O tubo de fluxo deve apresentar alta refratariedade, bom desempenho de isolamento, baixa capacidade t\u00e9rmica, peso leve, alta resist\u00eancia e longa vida \u00fatil, al\u00e9m de n\u00e3o ser corro\u00eddo pelo material fundido e n\u00e3o contamin\u00e1-lo.<\/p>\n

\"Tubo
\n2. Antes de acionar o forno, limpe cuidadosamente o tubo de fluxo e coloque-o com anteced\u00eancia para pr\u00e9-aquec\u00ea-lo completamente, a fim de evitar a ocorr\u00eancia de acidentes relacionados \u00e0 condensa\u00e7\u00e3o no tubo.
\n3. Quando o tubo de descarga \u00e9 utilizado, a jun\u00e7\u00e3o entre o tubo de fluxo e a calha de fluxo \u00e9 vedada hermeticamente com feltro de silicato de alum\u00ednio para evitar vazamentos de alum\u00ednio no forno-guia.
\n4. Antes de abrir a v\u00e1lvula de vazamento, espalhe uniformemente uma camada de fluxo na calha de sa\u00edda. Ap\u00f3s a descarga, ajuste a v\u00e1lvula de controle para elevar o n\u00edvel do metal l\u00edquido na calha o mais r\u00e1pido poss\u00edvel, feche a v\u00e1lvula de vazamento e pro\u00edba estritamente a agita\u00e7\u00e3o e a forma\u00e7\u00e3o de esc\u00f3ria. Em seguida, espalhe uma camada de fluxo em p\u00f3 sobre a superf\u00edcie do l\u00edquido.
\n5. Depois que o n\u00edvel do l\u00edquido no forno de manuten\u00e7\u00e3o est\u00e1tica fechar a abertura inferior do tubo de fluxo, espalhe uma camada de fluxo de cobertura<\/a> para cobrir o forno de manuten\u00e7\u00e3o est\u00e1tico.
\n6. Antes de os produtos especiais entrarem no forno, espalhe uniformemente uma camada de fluxo em p\u00f3 no banho de fus\u00e3o do forno de manuten\u00e7\u00e3o est\u00e1tica para uma limpeza secund\u00e1ria.<\/p>\n

O m\u00e9todo de inclina\u00e7\u00e3o \u00e9 utilizado quando n\u00e3o h\u00e1 desn\u00edvel entre o forno de fus\u00e3o e o forno de manuten\u00e7\u00e3o est\u00e1tico. Ao orientar o forno, o metal l\u00edquido deve fluir sob a pel\u00edcula de \u00f3xido na superf\u00edcie, e a vaz\u00e3o n\u00e3o deve ser muito r\u00e1pida, para n\u00e3o causar impacto do material fundido e provocar turbul\u00eancia. A vaz\u00e3o n\u00e3o deve ser muito lenta, pois isso causaria um tempo de transporte prolongado e uma grande queda na temperatura do metal fundido.<\/p>\n

Antes do forno piloto, \u00e9 necess\u00e1rio confirmar se a composi\u00e7\u00e3o qu\u00edmica da massa fundida no forno de fus\u00e3o atende aos requisitos da norma e se a temperatura da massa fundida atende aos requisitos da regulamenta\u00e7\u00e3o. Geralmente, a temperatura do forno de fus\u00e3o n\u00e3o \u00e9 inferior ao limite superior da temperatura de fundi\u00e7\u00e3o. Ela n\u00e3o pode ser superior ao limite superior da temperatura de fus\u00e3o. No entanto, algumas ligas apresentam uma temperatura m\u00e1xima de fundi\u00e7\u00e3o de 750 a 770 \u2103. \u00c9 permitido que sua temperatura instant\u00e2nea seja 10 a 15 \u2103 superior \u00e0 temperatura de fundi\u00e7\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"

Guide furnace is the process of transporting the melt with adjusted composition and temperature from the smelting furnace to the static holding furnace. Guide furnace…<\/p>","protected":false},"author":1,"featured_media":10132,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-10131","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nGuide Furnace - Process of Transporting Aluminum Melt<\/title>\n<meta name=\"description\" content=\"Guide furnace is the process of transporting the melt with adjusted composition and temperature from smelting furnace to static furnace.\" \/>\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\/pt\/guide-furnace\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Guide Furnace - Process of 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