{"id":7938,"date":"2021-02-25T08:19:28","date_gmt":"2021-02-25T08:19:28","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=7938"},"modified":"2021-02-25T08:19:28","modified_gmt":"2021-02-25T08:19:28","slug":"continuous-cast-rolling","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/continuous-cast-rolling\/","title":{"rendered":"Tecnologia de lamina\u00e7\u00e3o por lingotamento cont\u00ednuo"},"content":{"rendered":"<p>O processo de \u201claminar\u201d diretamente o metal fundido para obter produtos semiacabados ou acabados \u00e9 denominado tecnologia de lamina\u00e7\u00e3o por fundi\u00e7\u00e3o cont\u00ednua. A diferen\u00e7a fundamental entre a fundi\u00e7\u00e3o cont\u00ednua com rolos duplos e outros m\u00e9todos de fundi\u00e7\u00e3o cont\u00ednua de lingotes \u00e9 que o molde consiste em dois rolos de fundi\u00e7\u00e3o girat\u00f3rios com resfriamento, e o l\u00edquido deve ser solidificado e laminado a quente no espa\u00e7o entre os dois rolos, sendo todo o processo conclu\u00eddo em uma \u00e1rea reduzida (zona de fundi\u00e7\u00e3o-lamina\u00e7\u00e3o) em um curto espa\u00e7o de tempo (2 a 3 s). A lamina\u00e7\u00e3o por fundi\u00e7\u00e3o cont\u00ednua n\u00e3o \u00e9 o mesmo que fundi\u00e7\u00e3o e lamina\u00e7\u00e3o cont\u00ednuas. A fundi\u00e7\u00e3o e lamina\u00e7\u00e3o cont\u00ednuas s\u00e3o o processo de lamina\u00e7\u00e3o cont\u00ednua em laminadores subsequentes, ap\u00f3s o metal l\u00edquido ter sido solidificado em tarugos no molde da m\u00e1quina de fundi\u00e7\u00e3o. A fundi\u00e7\u00e3o de tarugos e a lamina\u00e7\u00e3o s\u00e3o dois processos independentes.<\/p>\n<p><strong>Caracter\u00edsticas da tecnologia de lamina\u00e7\u00e3o por fundi\u00e7\u00e3o cont\u00ednua<\/strong><\/p>\n<p>O metal fundido se transforma diretamente em tarugo ou material, o que encurta o processo de produ\u00e7\u00e3o, simplifica o processo de produ\u00e7\u00e3o e economiza muito em investimentos em equipamentos e consumo de recursos. Uma \u00fanica linha de fundi\u00e7\u00e3o e lamina\u00e7\u00e3o pode substituir a tradicional m\u00e1quina de fundi\u00e7\u00e3o DC, o forno de aquecimento e a m\u00e1quina de produ\u00e7\u00e3o de tarugos, e seus custos com equipamentos s\u00e3o de apenas 1\/3 dos da produ\u00e7\u00e3o de tarugos laminados a quente. Devido \u00e0 elimina\u00e7\u00e3o do aquecimento secund\u00e1rio e \u00e0 redu\u00e7\u00e3o das passagens de lamina\u00e7\u00e3o, o consumo de energia \u00e9 de apenas 40% do m\u00e9todo de produ\u00e7\u00e3o tradicional.<\/p>\n<p>A taxa de resfriamento da lamina\u00e7\u00e3o por fundi\u00e7\u00e3o cont\u00ednua chega a 100~1000 K\/s, o que \u00e9 muito superior \u00e0 <a href=\"http:\/\/www.alalloycasting.com\/pt\/aluminum-die-casting\/\">Elenco de DC<\/a> m\u00e9todo (2-3 K\/s). Portanto, o espa\u00e7amento entre as dendrites da chapa fundida e laminada \u00e9 de apenas 5-10 \u03bcm, as part\u00edculas do composto met\u00e1lico s\u00e3o finas, 1-2 \u03bcm, e a supersatura\u00e7\u00e3o do elemento soluto na solu\u00e7\u00e3o s\u00f3lida \u00e9 significativamente melhorada, o que aumenta a resist\u00eancia \u00e0 tra\u00e7\u00e3o e o limite de escoamento das chapas fundidas e laminadas 10%~20%, al\u00e9m de elevar a temperatura de recristaliza\u00e7\u00e3o em dezenas de graus.<\/p>\n<p>A combina\u00e7\u00e3o de fundi\u00e7\u00e3o e lamina\u00e7\u00e3o melhora a compacta\u00e7\u00e3o da estrutura met\u00e1lica, elimina o encolhimento e a porosidade, reduz defeitos como a segrega\u00e7\u00e3o, elimina as extremidades de corte e aumenta a taxa de rendimento em cerca de 15%.<\/p>\n<p>Ela permite a produ\u00e7\u00e3o cont\u00ednua e autom\u00e1tica de fundi\u00e7\u00e3o e lamina\u00e7\u00e3o, o que contribui para a gest\u00e3o cient\u00edfica e para a melhoria das condi\u00e7\u00f5es de trabalho.<\/p>","protected":false},"excerpt":{"rendered":"<p>The process of directly &#8220;rolling&#8221; molten metal into semi-finished or finished products is called continuous cast rolling technology. The fundamental difference between twin-roll continuous casting&hellip;<\/p>","protected":false},"author":1,"featured_media":7939,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-7938","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>Continuous Cast Rolling Technology for Molten Metal<\/title>\n<meta name=\"description\" content=\"The process of directly &quot;rolling&quot; molten metal into semi-finished or finished products is called continuous cast rolling technology.\" \/>\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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