{"id":11208,"date":"2021-11-14T08:47:10","date_gmt":"2021-11-14T08:47:10","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11208"},"modified":"2021-11-12T08:56:35","modified_gmt":"2021-11-12T08:56:35","slug":"aluminum-cast-rolling-production","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/aluminum-cast-rolling-production\/","title":{"rendered":"Produ\u00e7\u00e3o de rolos de alum\u00ednio fundido"},"content":{"rendered":"

A produ\u00e7\u00e3o por lamina\u00e7\u00e3o de pe\u00e7as fundidas \u00e9 amplamente utilizada no processamento avan\u00e7ado de ligas de alum\u00ednio. A produ\u00e7\u00e3o por lamina\u00e7\u00e3o de pe\u00e7as fundidas de alum\u00ednio apresenta as vantagens de um fluxo de processo curto, baixo consumo de energia, dist\u00e2ncia dendr\u00edtica reduzida e compostos intermet\u00e1licos finos.<\/p>\n

No entanto, no processo de produ\u00e7\u00e3o propriamente dito, h\u00e1 v\u00e1rios defeitos na chapa laminada por fundi\u00e7\u00e3o quebrada, entre os quais a borda rachada \u00e9 um defeito comum no processo de produ\u00e7\u00e3o.<\/p>\n

A exist\u00eancia desse defeito faz com que as tiras laminadas a quente fiquem continuamente sujeitas a tens\u00f5es de tra\u00e7\u00e3o e compress\u00e3o no processo de produ\u00e7\u00e3o subsequente, e as bordas rachadas continuam a se expandir. Em particular, as grandes rachaduras iniciais se espalham rapidamente durante a lamina\u00e7\u00e3o a frio e, ao atingirem um certo tamanho, causam a ruptura da tira, interrompendo a produ\u00e7\u00e3o.<\/p>\n

Al\u00e9m disso, rachaduras muito grandes n\u00e3o podem ser totalmente removidas, o que n\u00e3o s\u00f3 afeta o processamento posterior e o uso pelo usu\u00e1rio, mas tamb\u00e9m aumenta o custo. Portanto, trata-se de um problema urgente para os t\u00e9cnicos de produ\u00e7\u00e3o, como o excesso de rachaduras e a preven\u00e7\u00e3o da ocorr\u00eancia de rachaduras durante o produ\u00e7\u00e3o por fundi\u00e7\u00e3o e lamina\u00e7\u00e3o<\/a> processo.<\/p>\n

De acordo com o princ\u00edpio de fundi\u00e7\u00e3o-lamina\u00e7\u00e3o, na zona de fundi\u00e7\u00e3o-lamina\u00e7\u00e3o, o metal l\u00edquido \u00e9 resfriado por dois rolos girat\u00f3rios, e os dois processos de fundi\u00e7\u00e3o e lamina\u00e7\u00e3o s\u00e3o conclu\u00eddos em pouco tempo. N\u00e3o h\u00e1 deslizamento relativo entre a superf\u00edcie do metal e a superf\u00edcie do rolo; a pe\u00e7a laminada fica mais fina, e ocorre apenas um grande deslizamento para tr\u00e1s no centro.<\/p>\n

Portanto, a superf\u00edcie met\u00e1lica e a camada interna s\u00e3o deformadas sob a a\u00e7\u00e3o da for\u00e7a de cisalhamento e da press\u00e3o, e essa deforma\u00e7\u00e3o \u00e9 transferida para a camada dura solidificada da cavidade do l\u00edquido, causando a mesma deforma\u00e7\u00e3o e for\u00e7a de cisalhamento no interior da camada dura solidificada.<\/p>\n

Quando a for\u00e7a de cisalhamento gerada pela deforma\u00e7\u00e3o excede a resist\u00eancia ao cisalhamento do metal solidificado de camada dura, a parte mais fr\u00e1gil do material racha primeiro e, em seguida, a rachadura se expande. Depois que a tens\u00e3o nesse ponto \u00e9 totalmente aliviada, a rachadura deixa de se expandir, formando assim uma fissura.<\/p>\n

Na zona de deforma\u00e7\u00e3o, o metal \u00e9 submetido simultaneamente \u00e0 for\u00e7a de atrito aplicada pelas abas da ponta do rolo e \u00e0 tens\u00e3o de tra\u00e7\u00e3o aplicada em ambos os lados. Essas duas tens\u00f5es em dire\u00e7\u00f5es opostas fazem com que as fissuras ocorram preferencialmente nas bordas.<\/p>\n

De acordo com o princ\u00edpio da fundi\u00e7\u00e3o e lamina\u00e7\u00e3o, a fundi\u00e7\u00e3o de alum\u00ednio pode minimizar as rachaduras ao reduzir o grau de deforma\u00e7\u00e3o ou o atrito nas sali\u00eancias da ponta do canal de vazamento.<\/p>","protected":false},"excerpt":{"rendered":"

Cast-rolling production is widely used in aluminum alloy deep-processing production. The aluminum cast-rolling production has the advantages of short process flow, low energy consumption, small…<\/p>","protected":false},"author":1,"featured_media":11211,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-11208","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nAluminum Cast Rolling Production, Aluminum Alloy Deep Processing<\/title>\n<meta name=\"description\" content=\"The aluminum cast-rolling production has the advantages of short process flow, low energy consumption, small dendritic distance.\" \/>\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\/aluminum-cast-rolling-production\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta 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