{"id":10552,"date":"2021-10-13T01:56:35","date_gmt":"2021-10-13T01:56:35","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10552"},"modified":"2021-10-13T01:56:35","modified_gmt":"2021-10-13T01:56:35","slug":"foundry-refining-flux","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/foundry-refining-flux\/","title":{"rendered":"Flux d'affinage pour fonderie"},"content":{"rendered":"<p>Les fondants d'affinage utilis\u00e9s en fonderie sont des m\u00e9langes sp\u00e9ciaux compos\u00e9s g\u00e9n\u00e9ralement de compos\u00e9s inorganiques solides, destin\u00e9s au nettoyage, au d\u00e9gazage et \u00e0 l'affinage du grain des alliages d'aluminium fondus, ainsi qu'\u00e0 d'autres fins. La composition d'un fondant varie en fonction de son utilisation et d'autres variables du proc\u00e9d\u00e9, telles que l'alliage et la temp\u00e9rature.<\/p>\n<p><strong>Caract\u00e9ristiques du flux d'affinage en fonderie :<\/strong><\/p>\n<p>(1). R\u00e9duction notable des impuret\u00e9s non m\u00e9talliques et des cavit\u00e9s dans la pi\u00e8ce moul\u00e9e.<br \/>\n(2). S\u00e9parer facilement les scories de l'aluminium fondu.<br \/>\n(3). Moins de pertes. Les scories s\u00e9par\u00e9es de l'aluminium fondu ne parvenaient pas \u00e0 se maintenir ensemble ; comme elles contenaient moins de m\u00e9tal, les pertes li\u00e9es \u00e0 la fusion ont diminu\u00e9.<br \/>\n(4). Le proc\u00e9d\u00e9 ne g\u00e9n\u00e8re ni gaz toxique ni fum\u00e9e visible. Il est sans danger pour les travailleurs, les \u00e9quipements et l'environnement.<br \/>\n(5). \u00c0 utiliser facilement.<\/p>\n<h2>Quel est le r\u00f4le d'un flux d'affinage en fonderie ?<\/h2>\n<p>Des inclusions peuvent se former lorsque des particules r\u00e9fractaires se d\u00e9tachent \u00e0 la suite d'une r\u00e9action avec l'aluminium. Les ferrailles neuves contiennent g\u00e9n\u00e9ralement une tr\u00e8s faible quantit\u00e9 d'inclusions. Par ailleurs, on distingue deux types d'inclusions : les inclusions exog\u00e8nes et les inclusions indig\u00e8nes. Les inclusions exog\u00e8nes se pr\u00e9sentent sous forme de salissures et d\u2019oxydes pr\u00e9sents dans la ferraille. Il s\u2019agit de particules qui existent sous forme de phase distincte avant la fusion.<\/p>\n<p>Les fondants sont souvent n\u00e9cessaires lorsqu'on utilise des d\u00e9chets m\u00e9talliques dans le bain de fusion. Ils permettent aux impuret\u00e9s et aux scories de remonter \u00e0 la surface du bain de fusion. Ils forment \u00e9galement une couche flottante \u00e0 la surface du m\u00e9tal en fusion qui prot\u00e8ge celui-ci de l'oxydation.<\/p>\n<p>L'utilisation d'un bon flux permet de r\u00e9cup\u00e9rer le m\u00e9tal qui, sans cela, resterait coll\u00e9 aux scories et serait perdu lors de l'\u00e9cumage. Peut \u00eatre utilis\u00e9 dans des creusets chauds ou des fours \u00e0 r\u00e9verb\u00e8re.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10348\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/09\/Aluminium-Melt-Purification-Technology.jpg\" alt=\"\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/09\/Aluminium-Melt-Purification-Technology.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/09\/Aluminium-Melt-Purification-Technology-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p><strong>Comment utiliser le flux de raffinage ?<\/strong><\/p>\n<p>Si un <a href=\"http:\/\/www.alalloycasting.com\/fr\/covering-flux\/\">flux de recouvrement<\/a> Si l'on souhaite que le flux agisse pendant la fusion, il convient d'appliquer une premi\u00e8re couche de flux sur le m\u00e9tal froid et non fondu dans un creuset. Lors de la cuisson, cela formera une couche de protection flottante qui emp\u00eachera le m\u00e9tal d'absorber les gaz.<\/p>\n<p>Chauffez la masse jusqu\u2019\u00e0 ce qu\u2019elle atteigne la temp\u00e9rature de coul\u00e9e.<\/p>\n<p>\u00c9cumez les scories initiales de la charge fondue, puis incorporez la deuxi\u00e8me charge de fondant au m\u00e9tal en fusion. Vous obtiendrez ainsi des scories poudreuses \u00e0 faible teneur en m\u00e9taux. Le m\u00e9tal est d\u00e9sormais pr\u00eat \u00e0 \u00eatre \u00e9cum\u00e9 de ses scories finales et coul\u00e9.<\/p>","protected":false},"excerpt":{"rendered":"<p>Foundry refining flux is special blends of typically solid, inorganic compounds designed for cleaning, degassing, grain refining of molten aluminum alloys and other purposes. A&hellip;<\/p>","protected":false},"author":1,"featured_media":10563,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-10552","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Foundry Refining Flux for Molten Aluminum Casting<\/title>\n<meta name=\"description\" content=\"Foundry refining flux is special blends of typically solid, inorganic compounds designed for cleaning, degassing, grain refining.\" \/>\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\/fr\/foundry-refining-flux\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta 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