{"id":5936,"date":"2020-10-24T13:57:53","date_gmt":"2020-10-24T13:57:53","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=5936"},"modified":"2020-10-24T13:57:53","modified_gmt":"2020-10-24T13:57:53","slug":"inclusions-in-strip","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/inclusions-in-strip\/","title":{"rendered":"Inclus\u00f5es na tira"},"content":{"rendered":"<p>A tira laminada a quente cont\u00e9m esc\u00f3ria, fundente, diversos fragmentos de refrat\u00e1rios, \u00f3xidos met\u00e1licos e outras impurezas, conhecidas como inclus\u00f5es. Existem muitos tipos de inclus\u00f5es na tira laminada a quente, na maioria de cor preta ou refrat\u00e1ria, com formas irregulares.<\/p>\n<p><strong>Causas das inclus\u00f5es na tira<\/strong><\/p>\n<p>As raz\u00f5es s\u00e3o as seguintes: os lingotes de alum\u00ednio, as ligas-m\u00e3e e as sucatas utilizadas como mat\u00e9rias-primas cont\u00eam impurezas, como \u00f3leo, umidade etc., que facilitam a forma\u00e7\u00e3o de \u00f3xidos, inclus\u00f5es refrat\u00e1rias e outras; quanto aos aditivos, <a href=\"http:\/\/www.alalloycasting.com\/pt\/tundish-flux\/\">agentes de cobertura<\/a>, agentes de escoria\u00e7\u00e3o, agentes de refino, refinadores, etc.; impurezas de pot\u00e1ssio, s\u00f3dio e cloro se formam facilmente; o meio de combust\u00e3o utilizado para grafite e pulveriza\u00e7\u00e3o t\u00e9rmica, bem como o meio de combust\u00e3o utilizado para g\u00e1s de refino, fundi\u00e7\u00e3o e aquecimento de canais de vazamento \u2014 como \u00f3leo pesado, g\u00e1s liquefeito etc. \u2014, tende a gerar inclus\u00f5es de carbono, nitreto de alum\u00ednio, cloro, enxofre e outros elementos; rebarbas do forno, sistemas de alimenta\u00e7\u00e3o de fluxo, ferramentas etc. que n\u00e3o estejam em bom estado; lascas finas do bico de fundi\u00e7\u00e3o, descascamento do bico de fundi\u00e7\u00e3o, esc\u00f3ria etc. tendem facilmente a se transformar em inclus\u00f5es como c\u00e1lcio, sil\u00edcio, alumina etc.; opera\u00e7\u00f5es de processo inadequadas, como esc\u00f3ria da fus\u00e3o n\u00e3o limpa, mistura incorreta, alta temperatura de fus\u00e3o, etc., tamb\u00e9m facilitam a forma\u00e7\u00e3o dessas inclus\u00f5es.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-5960\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/10\/Inclusions-in-Strip.jpg\" alt=\"Inclus\u00f5es na tira\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/10\/Inclusions-in-Strip.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/10\/Inclusions-in-Strip-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p><strong>Medidas preventivas contra inclus\u00f5es na tira<\/strong><\/p>\n<p>As medidas preventivas que podem ser adotadas s\u00e3o: garantir que as mat\u00e9rias-primas e os materiais auxiliares estejam limpos e que os lingotes de alum\u00ednio, as ligas intermedi\u00e1rias e os res\u00edduos utilizados estejam livres de \u00f3leo e umidade; selecionar aditivos, emuls\u00f5es de grafite e meios de combust\u00e3o de alta qualidade; o forno deve ser limpo regularmente para garantir que o forno, o sistema de alimenta\u00e7\u00e3o de fluxo, as ferramentas etc. estejam secos e limpos; ao utilizar pulveriza\u00e7\u00e3o t\u00e9rmica ou pulveriza\u00e7\u00e3o de grafite, ajustar a propor\u00e7\u00e3o e o volume de pulveriza\u00e7\u00e3o para garantir uma pulveriza\u00e7\u00e3o uniforme; refor\u00e7ar <a href=\"http:\/\/www.alalloycasting.com\/pt\/refining-and-degassing-in-aluminum-alloy\/\">refino e desgaseifica\u00e7\u00e3o<\/a> e filtragem do material fundido para melhorar a precis\u00e3o da filtragem. Minimizar o tempo de fus\u00e3o, reduzir adequadamente a temperatura do material fundido e evitar que a camada de \u00f3xido seja misturada ao material fundido durante as opera\u00e7\u00f5es de produ\u00e7\u00e3o; as limalhas de alum\u00ednio presentes na cavidade e na superf\u00edcie dos rolos devem ser removidas antes da coloca\u00e7\u00e3o da placa vertical, a fim de minimizar a forma\u00e7\u00e3o de esc\u00f3ria; se o bico de fundi\u00e7\u00e3o estiver danificado, ele deve ser desativado imediatamente para substitui\u00e7\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"<p>The cast-rolled strip contains slag, flux, various refractory fragments, metal oxides and other impurities, which are called inclusions. There are many kinds of inclusions in&hellip;<\/p>","protected":false},"author":1,"featured_media":5960,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5936","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Inclusions in Strip | Refining Degassing and Melt Filtering<\/title>\n<meta name=\"description\" content=\"There are many kinds of inclusions in strip, mostly black or refractory color, with irregular shapes. The preventive measures can be take.\" \/>\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\/inclusions-in-strip\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Inclusions in Strip | Refining Degassing and Melt Filtering\" \/>\n<meta property=\"og:description\" content=\"There are many kinds of inclusions in strip, mostly black or refractory color, with irregular shapes. 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