Perda na fundi\u00e7\u00e3o de alum\u00ednio<\/a> \u00e9 o termo geral que designa o metal e a liga de alum\u00ednio que se perdem no processo de fundi\u00e7\u00e3o devido \u00e0 oxida\u00e7\u00e3o, volatiliza\u00e7\u00e3o e perda irrecuper\u00e1vel de metal, causadas pela intera\u00e7\u00e3o com a parede do forno e com o agente de refino.<\/p>\nA principal manifesta\u00e7\u00e3o externa da perda na fundi\u00e7\u00e3o pode ser dividida em duas partes: uma na forma de cinzas de alum\u00ednio puro e a outra na forma de alum\u00ednio a granel, alum\u00ednio com defeitos e esc\u00f3ria de alum\u00ednio.<\/p>\n
O princ\u00edpio da combust\u00e3o oxidativa do alum\u00ednio pode ser melhor compreendido por meio das seguintes equa\u00e7\u00f5es qu\u00edmicas.<\/p>\n
Na faixa de temperatura de fus\u00e3o, o alum\u00ednio apresenta alta afinidade com o oxig\u00eanio e \u00e9 facilmente oxidado. Ap\u00f3s a oxida\u00e7\u00e3o, forma-se na superf\u00edcie uma camada de Al\u2082O\u2083; quando a temperatura \u00e9 superior a 500 \u00b0C, trata-se de r-Al\u2082O\u2083 metaest\u00e1vel.
\nDurante a transi\u00e7\u00e3o da pel\u00edcula de \u00f3xido metaest\u00e1vel para a pel\u00edcula de \u00f3xido est\u00e1vel, ocorre uma contra\u00e7\u00e3o volum\u00e9trica, al\u00e9m de ocorrerem oxida\u00e7\u00e3o adicional e fissura\u00e7\u00e3o.
\n\u00c0 medida que a temperatura do alum\u00ednio l\u00edquido aumenta e o tempo passa, a camada de \u00f3xido cresce mais rapidamente, e a quantidade e a espessura da oxida\u00e7\u00e3o aumentam significativamente.<\/p>\n
Os fatores que afetam a perda na fundi\u00e7\u00e3o s\u00e3o
\n1) Temperatura do alum\u00ednio l\u00edquido.
\n2) Rea\u00e7\u00e3o entre o alum\u00ednio l\u00edquido e o oxig\u00eanio.
\n3) Teor de alum\u00ednio na esc\u00f3ria de alum\u00ednio.
\n4) O alum\u00ednio l\u00edquido expelido pela esc\u00f3ria.
\n5) Quanto custa o alum\u00ednio com defeito e o alum\u00ednio a granel?.
\n6) Outras perdas<\/p>\n
Como reduzir as perdas na fundi\u00e7\u00e3o de alum\u00ednio?<\/p>\n
Reduzir a for\u00e7a de contato entre o alum\u00ednio l\u00edquido e o ar. Quanto maior for a for\u00e7a de contato entre o alum\u00ednio l\u00edquido e o oxig\u00eanio, mais grave ser\u00e1 a perda por oxida\u00e7\u00e3o e maior ser\u00e1 a perda na fundi\u00e7\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"
Aluminum Foundry Casting converts liquid aluminum into finished products and semi-finished products of aluminum ingots, bars or other shapes through processes such as batching, stirring,…<\/p>","protected":false},"author":1,"featured_media":8140,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8139","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\n
Aluminum Foundry Casting,Reduce Aluminum Casting Loss<\/title>\n<meta name=\"description\" content=\"Aluminum Foundry Casting converts liquid aluminum into finished products and semi-finished products of aluminum ingots, bars or other shapes.\" \/>\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-foundry-casting\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Aluminum Foundry Casting,Reduce Aluminum Casting Loss\" \/>\n<meta property=\"og:description\" content=\"Aluminum Foundry Casting converts liquid aluminum into finished products and semi-finished products of aluminum ingots, bars or other shapes.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.alalloycasting.com\/pt\/aluminum-foundry-casting\/\" \/>\n<meta property=\"og:site_name\" content=\"alalloycasting\" \/>\n<meta property=\"article:published_time\" content=\"2021-03-26T08:18:01+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/03\/Aluminum-Foundry-Casting.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"AdTech\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"AdTech\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/aluminum-foundry-casting\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/aluminum-foundry-casting\\\/\"},\"author\":{\"name\":\"AdTech\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#\\\/schema\\\/person\\\/431d9c832111002d5e0bf6dc57a33c20\"},\"headline\":\"Aluminum Foundry Casting\",\"datePublished\":\"2021-03-26T08:18:01+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/aluminum-foundry-casting\\\/\"},\"wordCount\":310,\"publisher\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/aluminum-foundry-casting\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.alalloycasting.com\\\/wp-content\\\/uploads\\\/2021\\\/03\\\/Aluminum-Foundry-Casting.jpg\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"pt-BR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/aluminum-foundry-casting\\\/\",\"url\":\"https:\\\/\\\/www.alalloycasting.com\\\/aluminum-foundry-casting\\\/\",\"name\":\"Aluminum Foundry Casting,Reduce Aluminum Casting Loss\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/aluminum-foundry-casting\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/aluminum-foundry-casting\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.alalloycasting.com\\\/wp-content\\\/uploads\\\/2021\\\/03\\\/Aluminum-Foundry-Casting.jpg\",\"datePublished\":\"2021-03-26T08:18:01+00:00\",\"description\":\"Aluminum Foundry Casting converts liquid aluminum into finished products and semi-finished products of aluminum ingots, bars or other shapes.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/aluminum-foundry-casting\\\/#breadcrumb\"},\"inLanguage\":\"pt-BR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.alalloycasting.com\\\/aluminum-foundry-casting\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-BR\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/aluminum-foundry-casting\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.alalloycasting.com\\\/wp-content\\\/uploads\\\/2021\\\/03\\\/Aluminum-Foundry-Casting.jpg\",\"contentUrl\":\"https:\\\/\\\/www.alalloycasting.com\\\/wp-content\\\/uploads\\\/2021\\\/03\\\/Aluminum-Foundry-Casting.jpg\",\"width\":500,\"height\":400,\"caption\":\"Aluminum Foundry Casting\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/aluminum-foundry-casting\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.alalloycasting.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Aluminum Foundry Casting\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#website\",\"url\":\"https:\\\/\\\/www.alalloycasting.com\\\/\",\"name\":\"AdTech China\",\"description\":\"AdTech Metallurgical Materials Co., Ltd\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.alalloycasting.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"pt-BR\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#organization\",\"name\":\"AdTech China\",\"url\":\"https:\\\/\\\/www.alalloycasting.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-BR\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.alalloycasting.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/cropped-adtech-logo-1-4.jpg\",\"contentUrl\":\"https:\\\/\\\/www.alalloycasting.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/cropped-adtech-logo-1-4.jpg\",\"width\":111,\"height\":111,\"caption\":\"AdTech China\"},\"image\":{\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.alalloycasting.com\\\/#\\\/schema\\\/person\\\/431d9c832111002d5e0bf6dc57a33c20\",\"name\":\"AdTech\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pt-BR\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/260cf9357f35fc676d5fc89811dc976b08eee83dda7e1da206a3c58afae13e29?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/260cf9357f35fc676d5fc89811dc976b08eee83dda7e1da206a3c58afae13e29?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/260cf9357f35fc676d5fc89811dc976b08eee83dda7e1da206a3c58afae13e29?s=96&d=mm&r=g\",\"caption\":\"AdTech\"},\"sameAs\":[\"https:\\\/\\\/www.alalloycasting.com\\\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Fundi\u00e7\u00e3o de alum\u00ednio, redu\u00e7\u00e3o das perdas na fundi\u00e7\u00e3o de alum\u00ednio","description":"A fundi\u00e7\u00e3o de alum\u00ednio transforma o alum\u00ednio l\u00edquido em produtos acabados e semiacabados, como lingotes, barras ou outras formas de alum\u00ednio.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.alalloycasting.com\/pt\/aluminum-foundry-casting\/","og_locale":"pt_BR","og_type":"article","og_title":"Aluminum Foundry Casting,Reduce Aluminum Casting Loss","og_description":"Aluminum Foundry Casting converts liquid aluminum into finished products and semi-finished products of aluminum ingots, bars or other shapes.","og_url":"https:\/\/www.alalloycasting.com\/pt\/aluminum-foundry-casting\/","og_site_name":"alalloycasting","article_published_time":"2021-03-26T08:18:01+00:00","og_image":[{"width":500,"height":400,"url":"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/03\/Aluminum-Foundry-Casting.jpg","type":"image\/jpeg"}],"author":"AdTech","twitter_card":"summary_large_image","twitter_misc":{"Escrito por":"AdTech","Est. tempo de leitura":"2 minutos"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.alalloycasting.com\/aluminum-foundry-casting\/#article","isPartOf":{"@id":"https:\/\/www.alalloycasting.com\/aluminum-foundry-casting\/"},"author":{"name":"AdTech","@id":"https:\/\/www.alalloycasting.com\/#\/schema\/person\/431d9c832111002d5e0bf6dc57a33c20"},"headline":"Aluminum Foundry Casting","datePublished":"2021-03-26T08:18:01+00:00","mainEntityOfPage":{"@id":"https:\/\/www.alalloycasting.com\/aluminum-foundry-casting\/"},"wordCount":310,"publisher":{"@id":"https:\/\/www.alalloycasting.com\/#organization"},"image":{"@id":"https:\/\/www.alalloycasting.com\/aluminum-foundry-casting\/#primaryimage"},"thumbnailUrl":"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/03\/Aluminum-Foundry-Casting.jpg","articleSection":["Blog"],"inLanguage":"pt-BR"},{"@type":"WebPage","@id":"https:\/\/www.alalloycasting.com\/aluminum-foundry-casting\/","url":"https:\/\/www.alalloycasting.com\/aluminum-foundry-casting\/","name":"Fundi\u00e7\u00e3o de alum\u00ednio, redu\u00e7\u00e3o das perdas na fundi\u00e7\u00e3o de alum\u00ednio","isPartOf":{"@id":"https:\/\/www.alalloycasting.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.alalloycasting.com\/aluminum-foundry-casting\/#primaryimage"},"image":{"@id":"https:\/\/www.alalloycasting.com\/aluminum-foundry-casting\/#primaryimage"},"thumbnailUrl":"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/03\/Aluminum-Foundry-Casting.jpg","datePublished":"2021-03-26T08:18:01+00:00","description":"A fundi\u00e7\u00e3o de alum\u00ednio transforma o alum\u00ednio l\u00edquido em produtos acabados e semiacabados, como lingotes, barras ou outras formas de alum\u00ednio.","breadcrumb":{"@id":"https:\/\/www.alalloycasting.com\/aluminum-foundry-casting\/#breadcrumb"},"inLanguage":"pt-BR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.alalloycasting.com\/aluminum-foundry-casting\/"]}]},{"@type":"ImageObject","inLanguage":"pt-BR","@id":"https:\/\/www.alalloycasting.com\/aluminum-foundry-casting\/#primaryimage","url":"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/03\/Aluminum-Foundry-Casting.jpg","contentUrl":"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/03\/Aluminum-Foundry-Casting.jpg","width":500,"height":400,"caption":"Aluminum Foundry Casting"},{"@type":"BreadcrumbList","@id":"https:\/\/www.alalloycasting.com\/aluminum-foundry-casting\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.alalloycasting.com\/"},{"@type":"ListItem","position":2,"name":"Aluminum Foundry Casting"}]},{"@type":"WebSite","@id":"https:\/\/www.alalloycasting.com\/#website","url":"https:\/\/www.alalloycasting.com\/","name":"AdTech China","description":"AdTech Metallurgical Materials Co., Ltd","publisher":{"@id":"https:\/\/www.alalloycasting.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.alalloycasting.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"pt-BR"},{"@type":"Organization","@id":"https:\/\/www.alalloycasting.com\/#organization","name":"AdTech China","url":"https:\/\/www.alalloycasting.com\/","logo":{"@type":"ImageObject","inLanguage":"pt-BR","@id":"https:\/\/www.alalloycasting.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2026\/06\/cropped-adtech-logo-1-4.jpg","contentUrl":"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2026\/06\/cropped-adtech-logo-1-4.jpg","width":111,"height":111,"caption":"AdTech China"},"image":{"@id":"https:\/\/www.alalloycasting.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.alalloycasting.com\/#\/schema\/person\/431d9c832111002d5e0bf6dc57a33c20","name":"AdTech","image":{"@type":"ImageObject","inLanguage":"pt-BR","@id":"https:\/\/secure.gravatar.com\/avatar\/260cf9357f35fc676d5fc89811dc976b08eee83dda7e1da206a3c58afae13e29?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/260cf9357f35fc676d5fc89811dc976b08eee83dda7e1da206a3c58afae13e29?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/260cf9357f35fc676d5fc89811dc976b08eee83dda7e1da206a3c58afae13e29?s=96&d=mm&r=g","caption":"AdTech"},"sameAs":["https:\/\/www.alalloycasting.com\/"]}]}},"_links":{"self":[{"href":"https:\/\/www.alalloycasting.com\/pt\/wp-json\/wp\/v2\/posts\/8139","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.alalloycasting.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alalloycasting.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alalloycasting.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alalloycasting.com\/pt\/wp-json\/wp\/v2\/comments?post=8139"}],"version-history":[{"count":1,"href":"https:\/\/www.alalloycasting.com\/pt\/wp-json\/wp\/v2\/posts\/8139\/revisions"}],"predecessor-version":[{"id":8141,"href":"https:\/\/www.alalloycasting.com\/pt\/wp-json\/wp\/v2\/posts\/8139\/revisions\/8141"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alalloycasting.com\/pt\/wp-json\/wp\/v2\/media\/8140"}],"wp:attachment":[{"href":"https:\/\/www.alalloycasting.com\/pt\/wp-json\/wp\/v2\/media?parent=8139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alalloycasting.com\/pt\/wp-json\/wp\/v2\/categories?post=8139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alalloycasting.com\/pt\/wp-json\/wp\/v2\/tags?post=8139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}