{"id":7911,"date":"2021-02-21T06:27:36","date_gmt":"2021-02-21T06:27:36","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=7911"},"modified":"2021-02-21T06:27:36","modified_gmt":"2021-02-21T06:27:36","slug":"aluminum-foil-production-method","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/aluminum-foil-production-method\/","title":{"rendered":"M\u00e9todo de produ\u00e7\u00e3o de papel-alum\u00ednio"},"content":{"rendered":"<p>Com suas propriedades \u00fanicas, a folha de alum\u00ednio atende a diversas necessidades da produ\u00e7\u00e3o moderna em uma ampla gama de setores. Com o desenvolvimento da economia e da tecnologia, as exig\u00eancias quanto \u00e0 qualidade da folha de alum\u00ednio est\u00e3o aumentando. Espera-se que a folha de alum\u00ednio seja mais fina, apresente menos poros e tenha melhores propriedades mec\u00e2nicas e qualidade de superf\u00edcie. Para produzir uma folha de alum\u00ednio com espessura de apenas 0,005 mm, as exig\u00eancias em rela\u00e7\u00e3o \u00e0 chapa bruta s\u00e3o ainda maiores.<\/p>\n<p>A produ\u00e7\u00e3o de chapas de folha de alum\u00ednio geralmente adota dois m\u00e9todos: lamina\u00e7\u00e3o a quente e fundi\u00e7\u00e3o-lamina\u00e7\u00e3o.<\/p>\n<p>O m\u00e9todo de lamina\u00e7\u00e3o a quente consiste em refinar e purificar o alum\u00ednio fundido, transformando-o em grandes placas. As dimens\u00f5es do lingote s\u00e3o, geralmente, 600 mm de espessura, 2.200 mm de largura e 4.000 mm a 8.000 mm de comprimento. Ap\u00f3s a fresagem, os \u00f3xidos e defeitos na superf\u00edcie da placa s\u00e3o removidos. Em seguida, ela \u00e9 aquecida e laminada at\u00e9 atingir uma espessura de v\u00e1rios mil\u00edmetros, a uma temperatura superior \u00e0 temperatura de recristaliza\u00e7\u00e3o. Devido ao grande volume do lingote laminado a quente, a estrutura interna passa por m\u00faltiplas recupera\u00e7\u00f5es e recristaliza\u00e7\u00f5es durante o processo de grande deforma\u00e7\u00e3o pl\u00e1stica, de modo que a estrutura interna do lingote \u00e9 homogeneizada, e o tamanho e a forma dos gr\u00e3os cristalinos, bem como a concentra\u00e7\u00e3o de defeitos pontuais e lineares, sofrem altera\u00e7\u00f5es. Melhorias not\u00e1veis foram alcan\u00e7adas em outros aspectos.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-7912\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/02\/Aluminum-Foil-Production-1.jpg\" alt=\"Produ\u00e7\u00e3o de papel-alum\u00ednio\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/02\/Aluminum-Foil-Production-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/02\/Aluminum-Foil-Production-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>O m\u00e9todo de fundi\u00e7\u00e3o por lamina\u00e7\u00e3o consiste em conduzir o alum\u00ednio l\u00edquido atrav\u00e9s de <a href=\"http:\/\/www.alalloycasting.com\/pt\/caster-tips\/\">dicas para lan\u00e7adores<\/a> para a \u201cfolga entre os rolos\u201d formada entre os dois rolos. Ap\u00f3s o resfriamento for\u00e7ado, a cristaliza\u00e7\u00e3o e a deforma\u00e7\u00e3o pelos dois rolos, obt\u00e9m-se um lingote laminado por fundi\u00e7\u00e3o com espessura de 6 mm a 8 mm. Durante o processo de fundi\u00e7\u00e3o e lamina\u00e7\u00e3o, o alum\u00ednio fundido \u00e9 cristalizado pelo resfriamento r\u00e1pido dos dois rolos na estreita abertura entre eles, e o lingote solidificado \u00e9 simultaneamente submetido a um certo grau de deforma\u00e7\u00e3o por lamina\u00e7\u00e3o dos dois rolos, e a chapa fundida e laminada resultante apresenta uma estrutura interna do tipo semifundida, com forte orienta\u00e7\u00e3o cristalina. Em compara\u00e7\u00e3o com o m\u00e9todo de lamina\u00e7\u00e3o a quente, o m\u00e9todo de fundi\u00e7\u00e3o e lamina\u00e7\u00e3o apresenta as vantagens de menor investimento, alta efici\u00eancia e baixo custo.<\/p>","protected":false},"excerpt":{"rendered":"<p>With its unique properties, aluminum foil meets various needs of modern production in a wide range of fields. With the development of economy and technology,&hellip;<\/p>","protected":false},"author":1,"featured_media":7913,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-7911","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>Aluminum Foil Production Method - Hot Rolling and Cast Rolling<\/title>\n<meta name=\"description\" content=\"The aluminum foil production generally adopts two methods: hot rolling and casting-rolling. 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