{"id":9023,"date":"2021-06-01T06:44:16","date_gmt":"2021-06-01T06:44:16","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=9023"},"modified":"2021-05-31T07:10:13","modified_gmt":"2021-05-31T07:10:13","slug":"flux-slag-removal","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/flux-slag-removal\/","title":{"rendered":"\u00c9limination des scories de flux"},"content":{"rendered":"<p>L'\u00e9limination des scories de flux repose sur l'utilisation de compos\u00e9s complexes form\u00e9s par des impuret\u00e9s et des flux. En effet, lorsque les oxydes pr\u00e9sents dans l'aluminium fondu exercent une forte force de liaison avec le flux, dans certaines conditions de temp\u00e9rature, ils peuvent interagir pour former un sel double pr\u00e9sentant une densit\u00e9 plus faible, un point de fusion plus bas et se s\u00e9parant facilement du m\u00e9tal. Les scories sont ainsi extraites de la surface de l'aluminium fondu. L'\u00e9limination des scories par fondant s'effectue principalement \u00e0 la surface du m\u00e9tal en fusion.<\/p>\n<p>Les inclusions non m\u00e9talliques pr\u00e9sentes dans l'aluminium fondu sont principalement constitu\u00e9es d'oxyde d'aluminium. Ce dernier se caract\u00e9rise par sa densit\u00e9 et sa r\u00e9sistance. Qu'il soit \u00e0 l'\u00e9tat solide ou liquide, il forme facilement une couche protectrice solide et solidement adh\u00e9rente \u00e0 la surface. \u00c0 l'\u00e9tat fondu, le film d'oxyde d'aluminium se fragilise facilement sous l'effet d'un choc, ce qui peut causer des dommages consid\u00e9rables. \u00c0 haute temp\u00e9rature, la densit\u00e9 de l\u2019alumine n\u2019est que de 2,3 \u00e0 2,4 g\/cm\u00b3, ce qui est pratiquement identique \u00e0 celle de la masse d\u2019aluminium fondu. Par cons\u00e9quent, dans le bain d\u2019aluminium fondu, ces inclusions se trouvent en r\u00e9alit\u00e9 en suspension. Une fois que les scories oxyd\u00e9es se sont m\u00e9lang\u00e9es \u00e0 la bande coul\u00e9e et lamin\u00e9e au cours du processus de solidification, elles ne peuvent ni se dissoudre dans l\u2019alliage d\u2019aluminium ni former de compos\u00e9 interm\u00e9diaire avec d\u2019autres \u00e9l\u00e9ments. Elles ne peuvent que se r\u00e9partir aux limites des grains \u00e0 l\u2019\u00e9tat solide, d\u00e9truisant ainsi la force de liaison entre les grains. La pr\u00e9sence de ce type de scories oxyd\u00e9es, qui d\u00e9truit la force de liaison intercristalline, entra\u00eene de nombreux inconv\u00e9nients : elle r\u00e9duit les performances du processus lors du formage sous pression, provoque la stratification du m\u00e9tal pendant le traitement et g\u00e9n\u00e8re des fissures ; elle rend la r\u00e9sistance du produit instable et r\u00e9duit consid\u00e9rablement le taux d\u2019allongement.<\/p>\n<p>AdTech <a href=\"http:\/\/www.alalloycasting.com\/fr\/oxide-removal-flux\/\">flux d'\u00e9limination des oxydes<\/a> Il s'agit d'une poudre blanche compos\u00e9e de fines particules l\u00e9g\u00e8rement gris\u00e2tres. Ce flux d'\u00e9limination des oxydes facilite la coul\u00e9e continue d'alliages d'aluminium, am\u00e9liore la qualit\u00e9 et le rendement, prolonge la dur\u00e9e de vie du four et r\u00e9duit la main-d'\u0153uvre n\u00e9cessaire ; il est destin\u00e9 \u00e0 la coul\u00e9e de plusieurs s\u00e9ries d'alliages d'aluminium dans le four. Ses principaux composants sont le chlorure et la villiaumite, ainsi que d'autres compos\u00e9s. Apr\u00e8s un traitement thermique appropri\u00e9 et un tamisage, il pr\u00e9sente une granulom\u00e9trie uniforme. Il suffit de le pulv\u00e9riser \u00e0 l'aide d'un gaz comme vecteur, en le saupoudrant dans le four, sur les parois du four et sur les scories durcies au fond, afin d'assurer le nettoyage du four lors de la coul\u00e9e d'alliages de plusieurs s\u00e9ries.<\/p>","protected":false},"excerpt":{"rendered":"<p>Flux slag removal is based on the use of complex compounds formed by impurities and fluxes. Because when the oxides in the aluminum liquid have&hellip;<\/p>","protected":false},"author":1,"featured_media":9024,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-9023","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>Flux Slag Removal for Molten Metal,Oxide Removal Flux<\/title>\n<meta name=\"description\" content=\"Flux slag removal is based on the use of complex compounds formed by impurities and fluxes, carried out on the surface of molten metal.\" \/>\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\/flux-slag-removal\/\" \/>\n<meta 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