{"id":6278,"date":"2020-11-06T07:11:26","date_gmt":"2020-11-06T07:11:26","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6278"},"modified":"2020-11-06T07:11:26","modified_gmt":"2020-11-06T07:11:26","slug":"refractory-dam","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/refractory-dam\/","title":{"rendered":"Barragem refrat\u00e1ria"},"content":{"rendered":"<p>A barragem refrat\u00e1ria \u00e9 constitu\u00edda pelas seguintes solu\u00e7\u00f5es t\u00e9cnicas: defletor do canal de fluxo, placa de prote\u00e7\u00e3o traseira, placa de prote\u00e7\u00e3o dianteira, ranhura de veda\u00e7\u00e3o, orif\u00edcio de fixa\u00e7\u00e3o, orif\u00edcio de montagem, tira de veda\u00e7\u00e3o do canal de fluxo, suporte da tira de veda\u00e7\u00e3o, cilindro, suporte do cilindro, a chapa de a\u00e7o na extremidade do cilindro e o perfil em U na placa inferior; a se\u00e7\u00e3o do defletor do canal \u00e9 uma placa plana refrat\u00e1ria trapezoidal, e sua forma \u00e9 compat\u00edvel com a se\u00e7\u00e3o transversal interna do canal.<\/p>\n<p>Na produ\u00e7\u00e3o de lingotes de liga de alum\u00ednio, o alum\u00ednio fundido flui pela sa\u00edda de alum\u00ednio do forno, passa pelo canal longo at\u00e9 o canal de distribui\u00e7\u00e3o para concluir a fundi\u00e7\u00e3o. O defletor do canal \u00e9 utilizado para controlar a fundi\u00e7\u00e3o. Inicialmente, a posi\u00e7\u00e3o do alum\u00ednio l\u00edquido no canal de vazamento deve atingir a altura exigida pelos par\u00e2metros t\u00e9cnicos da fundi\u00e7\u00e3o. Somente quando o n\u00edvel do l\u00edquido atingir essa altura \u00e9 que o alum\u00ednio fundido poder\u00e1 passar rapidamente pelo canal de vazamento, garantindo que sua temperatura atenda aos requisitos de temperatura da fundi\u00e7\u00e3o. Dessa forma, o alum\u00ednio fundido pode preencher rapidamente o molde para concluir a fundi\u00e7\u00e3o.<\/p>\n<p>A calha de fluxo da barragem refrat\u00e1ria do equipamento original possui uma se\u00e7\u00e3o transversal trapezoidal. Na pr\u00e1tica de produ\u00e7\u00e3o, devido \u00e0 posi\u00e7\u00e3o elevada do defletor, quando o alum\u00ednio l\u00edquido atinge uma determinada altura na calha de fluxo e o cilindro eleva o defletor, o impulso do alum\u00ednio fundido gera uma for\u00e7a de cisalhamento que faz com que o defletor se rompa na junta, resultando em uma vida \u00fatil extremamente curta. Ao mesmo tempo, o defletor do canal de fluxo n\u00e3o foi projetado com uma ranhura de veda\u00e7\u00e3o, e uma correia plana \u00e9 utilizada para veda\u00e7\u00e3o, o que n\u00e3o s\u00f3 \u00e9 dif\u00edcil de fixar e tem alto custo, mas tamb\u00e9m apresenta baixo efeito de veda\u00e7\u00e3o e \u00e9 propenso a vazamentos de alum\u00ednio. Ainda existem certos riscos \u00e0 seguran\u00e7a quando o operador lida com os danos ao defletor. Devido aos danos ao defletor, a esc\u00f3ria pode cair no alum\u00ednio fundido, resultando em defeitos de qualidade nos produtos fundidos ou em res\u00edduos.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6279\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/11\/Refractory-Dam-1.jpg\" alt=\"Barragem refrat\u00e1ria\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/11\/Refractory-Dam-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/11\/Refractory-Dam-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Visando suprir as defici\u00eancias da t\u00e9cnica anterior, a AdTech oferece uma <a href=\"http:\/\/www.alalloycasting.com\/pt\/launder-dam\/\">barragem de Launder<\/a>, que \u00e9 utilizado na produ\u00e7\u00e3o de placas de liga de alum\u00ednio para controlar a posi\u00e7\u00e3o do alum\u00ednio l\u00edquido no canal de vazamento no in\u00edcio da fundi\u00e7\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"<p>The Refractory Dam is realized by the following technical solutions: including runner baffle, rear guard plate, front guard plate, sealing groove, fixing hole, mounting hole,&hellip;<\/p>","protected":false},"author":1,"featured_media":6280,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[],"class_list":["post-6278","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Refractory Dam used to Control Aluminum Casting<\/title>\n<meta name=\"description\" content=\"AdTech provides refractory dam, which is used in the production of aluminum alloy slabs to control the position of the aluminum liquid.\" \/>\n<meta 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