{"id":5370,"date":"2020-10-06T08:35:14","date_gmt":"2020-10-06T08:35:14","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=5370"},"modified":"2020-10-06T08:35:14","modified_gmt":"2020-10-06T08:35:14","slug":"impurity-of-aluminum-ingots","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/impurity-of-aluminum-ingots\/","title":{"rendered":"Impurezas nos lingotes de alum\u00ednio"},"content":{"rendered":"

A qualidade interna dos lingotes de alum\u00ednio refere-se tanto \u00e0 composi\u00e7\u00e3o qu\u00edmica quanto \u00e0 estrutura interna. Portanto, o controle rigoroso das impurezas nos lingotes de alum\u00ednio e a preven\u00e7\u00e3o da forma\u00e7\u00e3o de poros e buracos de contra\u00e7\u00e3o nos lingotes de alum\u00ednio tornaram-se pontos-chave no processo de produ\u00e7\u00e3o.<\/p>\n

Em primeiro lugar, o alum\u00ednio \u00e9 um metal ativo com forte capacidade redutora, e sua camada superficial se oxida facilmente ao contato com o ar. Durante o processo de produ\u00e7\u00e3o de lingotes, o alum\u00ednio l\u00edquido em alta temperatura sai do forno de mistura e flui para o molde de fundi\u00e7\u00e3o atrav\u00e9s do canal de fundi\u00e7\u00e3o<\/a>. Uma camada de esc\u00f3ria de \u00f3xido se forma na superf\u00edcie e flui para dentro do molde de fundi\u00e7\u00e3o junto com o alum\u00ednio l\u00edquido. As impurezas dos lingotes de alum\u00ednio precisam ser removidas a tempo; caso contr\u00e1rio, formar\u00e3o esc\u00f3ria na superf\u00edcie do lingote de alum\u00ednio.<\/p>\n

A raz\u00e3o para o ac\u00famulo de esc\u00f3ria \u00e9 a seguinte: em primeiro lugar, o orif\u00edcio do forno e o pequeno orif\u00edcio de fluxo do forno de mistura s\u00e3o utilizados por um longo per\u00edodo, e a esc\u00f3ria de alum\u00ednio adere \u00e0s paredes, resultando em formas irregulares. O alum\u00ednio fundido n\u00e3o consegue fluir suavemente, a vaz\u00e3o \u00e9 excessiva e ocorre turbul\u00eancia durante o fluxo, resultando em esc\u00f3ria de oxida\u00e7\u00e3o em excesso.<\/p>\n

\"Impurezas<\/p>\n

O forno de mistura recebe alum\u00ednio continuamente por um longo per\u00edodo sem agitar a esc\u00f3ria, o que resulta em uma maior quantidade de esc\u00f3ria de alum\u00ednio transportada no alum\u00ednio l\u00edquido, e parte da esc\u00f3ria oxidada \u00e9 envolvida no processo de escorifica\u00e7\u00e3o. Agite a esc\u00f3ria regularmente, fa\u00e7a a manuten\u00e7\u00e3o e limpeza do olho do forno e do pequeno olho de vazamento do forno de mistura, e mantenha a forma regular para que o alum\u00ednio l\u00edquido possa fluir suavemente. Reforce o processo de opera\u00e7\u00e3o de escorifica\u00e7\u00e3o e ajuste de vazamento e remova oportunamente a esc\u00f3ria de alumina na concha de vazamento para evitar o aumento e a diminui\u00e7\u00e3o repentinos dos lingotes de alum\u00ednio.<\/p>\n

Em segundo lugar, a temperatura do alum\u00ednio fundido \u00e9 muito baixa, e a esc\u00f3ria e o alum\u00ednio n\u00e3o podem ser completamente separados. Durante o processo de escoria\u00e7\u00e3o, o alum\u00ednio fundido come\u00e7a a se solidificar, fazendo com que a superf\u00edcie do lingote de alum\u00ednio fique irregular e propensa a rebarbas. Ao aumentar a temperatura do alum\u00ednio fundido, por exemplo, despeje alum\u00ednio fundido em alta temperatura no forno para evitar a forma\u00e7\u00e3o de inclus\u00f5es de esc\u00f3ria.<\/p>","protected":false},"excerpt":{"rendered":"

The internal quality of aluminum ingots refers to both chemical composition and internal organization. Therefore, strictly controlling the impurity of aluminum ingots and preventing the…<\/p>","protected":false},"author":1,"featured_media":5371,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5370","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nImpurity of Aluminum Ingots | Slag Removing Process<\/title>\n<meta name=\"description\" content=\"Impurity of Aluminum Ingots needs to be pulled out in time, otherwise it will forms slag on the surface of the aluminum ingot.\u00a0\" \/>\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\/impurity-of-aluminum-ingots\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" 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