{"id":12266,"date":"2022-01-13T06:56:36","date_gmt":"2022-01-13T06:56:36","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=12266"},"modified":"2022-02-22T09:25:45","modified_gmt":"2022-02-22T09:25:45","slug":"aluminium-casting-degassing","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/aluminium-casting-degassing\/","title":{"rendered":"Desgaseifica\u00e7\u00e3o de pe\u00e7as fundidas de alum\u00ednio"},"content":{"rendered":"

A desgaseifica\u00e7\u00e3o na fundi\u00e7\u00e3o de alum\u00ednio pode melhorar significativamente a qualidade e a produ\u00e7\u00e3o de produtos de alum\u00ednio, aumentando assim a rentabilidade das usinas de fundi\u00e7\u00e3o e de produ\u00e7\u00e3o de alum\u00ednio.<\/span><\/p>\n

O hidrog\u00eanio pode ser queimado em um fog\u00e3o a g\u00e1s, e o condensado proveniente de ferramentas, fluxo de refino<\/a> e aditivos de liga<\/a> s\u00e3o introduzidos no alum\u00ednio l\u00edquido.<\/span><\/p>\n

No entanto, o mais comum \u00e9 que o hidrog\u00eanio seja introduzido no alum\u00ednio fundido por meio da umidade atmosf\u00e9rica.<\/span> A solubilidade do hidrog\u00eanio aumenta com a umidade relativa da atmosfera.<\/span><\/p>\n

Devido ao seu baixo peso, o alum\u00ednio \u00e9 um metal frequentemente utilizado por causa de sua resist\u00eancia relativa.<\/span><\/p>\n

No entanto, na fundi\u00e7\u00e3o de alum\u00ednio, impurezas chamadas inclus\u00f5es podem criar pontos fracos no produto.<\/span><\/p>\n

Essas inclus\u00f5es t\u00eam diversas causas, mas a presen\u00e7a de hidrog\u00eanio \u00e9 uma das mais comuns.<\/span><\/p>\n

O hidrog\u00eanio \u00e9 sol\u00favel no alum\u00ednio l\u00edquido, passando pelo alum\u00ednio fundido quase t\u00e3o facilmente quanto o ar.<\/span><\/p>\n

\u00c0 medida que o metal l\u00edquido esfria e se solidifica, o hidrog\u00eanio flui das \u00e1reas de alta press\u00e3o para as \u00e1reas de baixa press\u00e3o.<\/span><\/p>\n

Ele se aglomera e forma bolhas de ar que se transformam em inclus\u00f5es e pontos fracos quando o metal se solidifica.<\/span><\/p>\n

A desgaseifica\u00e7\u00e3o da fundi\u00e7\u00e3o de alum\u00ednio \u00e9 um processo utilizado para remover o hidrog\u00eanio do alum\u00ednio fundido.<\/span><\/strong><\/p>\n

\"Desgaseifica\u00e7\u00e3o<\/p>\n

\u00c0 medida que aumenta a demanda por produtos de alum\u00ednio de alta qualidade, especialmente na ind\u00fastria aeroespacial, cresce tamb\u00e9m a necessidade de reduzir as inclus\u00f5es nos produtos moldados.<\/span><\/p>\n

Um m\u00e9todo comum para remover o hidrog\u00eanio consiste em injetar g\u00e1s nitrog\u00eanio no alum\u00ednio l\u00edquido.<\/span><\/p>\n

O hidrog\u00eanio \u00e9 atra\u00eddo pela bolha de nitrog\u00eanio, que \u00e9 ent\u00e3o absorvida pelo alum\u00ednio e liberada para a superf\u00edcie.<\/span><\/p>\n

O arg\u00f4nio tamb\u00e9m \u00e9 muito eficaz, mas o nitrog\u00eanio \u00e9 preferido devido ao alto custo associado a esse g\u00e1s.<\/span><\/p>\n

Dispositivo de desgaseifica\u00e7\u00e3o<\/a> \u00e9 um sistema autom\u00e1tico de tratamento de metal l\u00edquido destinado \u00e0 prote\u00e7\u00e3o ambiental, desgaseifica\u00e7\u00e3o e remo\u00e7\u00e3o de esc\u00f3ria de ligas de alum\u00ednio.<\/span><\/p>\n

O dispositivo de desgaseifica\u00e7\u00e3o utiliza o princ\u00edpio do impulsor, com um rotor que gera min\u00fasculas bolhas de g\u00e1s inerte e as mistura com o metal l\u00edquido.<\/span> Essas bolhas finas est\u00e3o distribu\u00eddas uniformemente no metal l\u00edquido sem perturbar o equil\u00edbrio da superf\u00edcie, o que maximiza a \u00e1rea de contato entre o g\u00e1s e o metal l\u00edquido.<\/span> A alta efici\u00eancia da unidade de desgaseifica\u00e7\u00e3o resulta em n\u00edveis mais elevados de desgaseifica\u00e7\u00e3o e remo\u00e7\u00e3o de esc\u00f3ria, al\u00e9m de tempos de tratamento mais curtos.<\/span><\/p>","protected":false},"excerpt":{"rendered":"

Aluminium Casting Degassing can greatly improve the quality and output of aluminum products, thus improving the profitability of aluminum smelting and casting plants. Hydrogen can…<\/p>","protected":false},"author":1,"featured_media":12267,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-12266","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nAluminium Casting Degassing for Removing Hydrogen<\/title>\n<meta name=\"description\" content=\"Aluminium Casting Degassing can improve the quality and output of aluminum products, thus improving the profitability of aluminum smelting.\" \/>\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\/aluminium-casting-degassing\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Aluminium Casting 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