{"id":3215,"date":"2020-07-31T09:02:36","date_gmt":"2020-07-31T09:02:36","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=3215"},"modified":"2020-07-31T09:02:36","modified_gmt":"2020-07-31T09:02:36","slug":"aluminum-slab-bending-analysis","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/aluminum-slab-bending-analysis\/","title":{"rendered":"An\u00e1lise da flex\u00e3o de placas de alum\u00ednio"},"content":{"rendered":"

Existem duas causas principais para a lentid\u00e3o na curvatura das placas de alum\u00ednio:<\/strong><\/p>\n

(1) A cabe\u00e7a do lingote plano n\u00e3o est\u00e1 posicionada corretamente, e as duas grandes superf\u00edcies opostas ou lados n\u00e3o se encontram no mesmo plano horizontal ao entrar em contato com a base, apresentando uma situa\u00e7\u00e3o em que um lado est\u00e1 mais alto e o outro mais baixo.<\/p>\n

(2) Durante o processo de fundi\u00e7\u00e3o<\/a>, devido aos sedimentos e outras impurezas presentes na \u00e1gua de resfriamento, que bloqueiam o orif\u00edcio de \u00e1gua da camisa de resfriamento do molde, resultando em uma diferen\u00e7a na intensidade de resfriamento entre as duas faces principais ou os dois lados do lingote plano. O lado com maior intensidade de resfriamento se solidifica primeiro, enquanto o lado com menor intensidade de resfriamento se solidifica posteriormente. Sob a a\u00e7\u00e3o da tens\u00e3o de fundi\u00e7\u00e3o e de sua pr\u00f3pria gravidade, o lingote plano se curva levemente para o lado com menor intensidade de resfriamento. \u00c0 medida que o processo de fundi\u00e7\u00e3o avan\u00e7a, o comprimento do lingote plano aumenta gradualmente, e esse tipo de pequena curvatura se acumula e se manifesta progressivamente, formando assim uma curvatura lenta e cr\u00f4nica.<\/p>\n

Existem tr\u00eas causas para a deforma\u00e7\u00e3o por deslocamento da placa de liga de alum\u00ednio:<\/strong><\/p>\n

(1) A cabe\u00e7a do bast\u00e3o-mestre do lingote plano n\u00e3o est\u00e1 posicionada corretamente, e o contato da parte inferior com a base n\u00e3o \u00e9 completo, havendo uma folga.<\/p>\n

\n
(2) A \u00e1rea de contato entre a base do lingote plano e a cabe\u00e7a-matriz \u00e9 pequena. A cabe\u00e7a-matriz do lingote plano \u00e9 retangular, com uma base plana. Quando o alum\u00ednio fundido \u00e9 resfriado e solidificado na cabe\u00e7a-matriz, a parte central se solidifica primeiro e, em seguida, flui para a \u00e1rea circundante. Como a solidifica\u00e7\u00e3o ocorre em pouco tempo e \u00e9 influenciada pela fluidez do metal e pelos gases produzidos pela \u00e1gua de resfriamento, \u00e9 imposs\u00edvel que o alum\u00ednio l\u00edquido preencha totalmente a cabe\u00e7a do molde ap\u00f3s a contra\u00e7\u00e3o por solidifica\u00e7\u00e3o. Portanto, a forma da base do lingote plano \u00e9 arqueada.<\/div>\n
<\/div>\n
(3) O vazamento de alum\u00ednio ocorre na parte central do fundo do lingote plano durante a opera\u00e7\u00e3o de refor\u00e7o. Ao fundir o lingote plano, o primeiro passo \u00e9 formar o fundo. Se o fundo for bem feito, a probabilidade de o lingote plano entortar ser\u00e1 menor.<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

There are two main causes of aluminum slab slow bending: (1) The dummy bar head of the flat ingot is not placed smoothly, and the…<\/p>","protected":false},"author":1,"featured_media":3219,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[1758,1759],"class_list":["post-3215","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo","tag-aluminum-slab-bending-analysis","tag-aluminum-slab-casting"],"yoast_head":"\nAluminum Slab Bending Analysis, Aluminum Slab Casting<\/title>\n<meta name=\"description\" content=\"The unsteady placement of the die head of the cast billet and blocked crystallizer will cause the cast aluminum slab bending.\" \/>\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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