{"id":5061,"date":"2020-09-25T07:11:52","date_gmt":"2020-09-25T07:11:52","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=5061"},"modified":"2020-09-25T07:11:52","modified_gmt":"2020-09-25T07:11:52","slug":"flux-for-slag-removal","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/flux-for-slag-removal\/","title":{"rendered":"Flux pour l'\u00e9limination des scories"},"content":{"rendered":"<p>Le flux utilis\u00e9 pour l'\u00e9limination des scories dans la masse fondue d'alliage d'aluminium agit principalement selon trois m\u00e9canismes : l'adsorption, la dissolution et la combinaison. La dissolution s'effectue principalement par l'ajout, dans le fondant, d'un produit chimique capable de se dissoudre avec les inclusions de scories ; la dissolution s'op\u00e8re gr\u00e2ce \u00e0 la similitude de leurs propri\u00e9t\u00e9s physico-chimiques, puis les scories sont \u00e9limin\u00e9es avec le fondant. Par exemple, le Na\u2083AlF\u2086 peut dissoudre l'Al\u2082O\u2083. Quant \u00e0 la r\u00e9action chimique, elle s'op\u00e8re par l'interaction chimique entre le <a href=\"http:\/\/www.alalloycasting.com\/fr\/fluxes\/\">flux<\/a> et les scories pour former d'autres compos\u00e9s facilement \u00e9liminables permettant d'atteindre l'objectif de l'\u00e9limination, tels que le Na\u2082SiF\u2086, tandis que l'Al\u2082O\u2083 restant a r\u00e9agi pour former du Na\u2083AlF\u2086 et de l'AlF\u2083. Tous ces compos\u00e9s peuvent \u00eatre affin\u00e9s par d'autres m\u00e9canismes.<\/p>\n<p>\u00c0 l'heure actuelle, les alliages haute performance \u00e9voluent vers des sp\u00e9cifications de plus en plus importantes, et les exigences en mati\u00e8re de dimensions des billettes moul\u00e9es ne cessent d'augmenter. Les gaz r\u00e9siduels, les impuret\u00e9s, les scories et les m\u00e9taux alcalins et alcalino-terreux pr\u00e9sents dans la masse fondue d'alliage d'aluminium nuisent \u00e0 la d\u00e9formation des billettes moul\u00e9es lors de leur usinage et \u00e0 leur processus d'exploitation.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-5149\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/09\/Flux-for-Slag-Removal-1.jpg\" alt=\"Flux pour l&#039;\u00e9limination des scories\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/09\/Flux-for-Slag-Removal-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/09\/Flux-for-Slag-Removal-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Les inclusions pr\u00e9sentes dans la masse d'aluminium fondu comprennent des inclusions solides telles que les carbures, les nitrures, les oxydes, les hydrures et les borures, ainsi que des inclusions m\u00e9talliques telles que le fer, le silicium, le zinc et le mangan\u00e8se. Parmi celles-ci, l'Al\u2082O\u2083 est le composant principal, repr\u00e9sentant 95% des inclusions. La taille des inclusions non m\u00e9talliques dans la masse d'aluminium fondu varie de quelques microns \u00e0 plusieurs dizaines de microns, ce qui est tr\u00e8s n\u00e9faste. Les inclusions d'oxydes non m\u00e9talliques et la matrice des alliages d'aluminium pr\u00e9sentent des param\u00e8tres de performance diff\u00e9rents, tels que le module d'\u00e9lasticit\u00e9, la duret\u00e9 et le coefficient de dilatation. Sous l\u2019action d\u2019une force externe, une concentration de contraintes est susceptible de se produire au niveau des angles vifs de la phase d\u2019inclusion oxyd\u00e9e, ce qui endommagera la structure de la matrice, provoquera des fuites ou favorisera la corrosion du produit, et r\u00e9duira consid\u00e9rablement les propri\u00e9t\u00e9s m\u00e9caniques et la r\u00e9sistance \u00e0 la corrosion sous contrainte. La pr\u00e9sence de scories r\u00e9duit \u00e9galement la fluidit\u00e9 de l\u2019alliage et sa capacit\u00e9 \u00e0 remplir le moule, et augmente le risque de d\u00e9fauts de coul\u00e9e. Elle accro\u00eet la tendance de l\u2019aluminium fondu \u00e0 absorber des gaz, entrave la diffusion et la pr\u00e9cipitation de ces derniers, et favorise la formation de porosit\u00e9 secondaire et de vides au cours du traitement thermique.<\/p>\n<p>AdTech produit un flux destin\u00e9 \u00e0 l'\u00e9limination des scories. L'agent d'affinage AdTech repose sur une technologie unique qui am\u00e9liore les effets traditionnels de d\u00e9gazage et de formation de scories dans le m\u00e9tal en fusion.<\/p>","protected":false},"excerpt":{"rendered":"<p>The flux for slag removal in the aluminum alloy melt mainly through three methods of adsorption, dissolution, and compounding. The dissolution is mainly achieved by&hellip;<\/p>","protected":false},"author":1,"featured_media":5150,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-5061","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 for Slag Removal in Aluminum Alloy -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"The flux for slag removal in the aluminum alloy melt mainly through three methods of adsorption, dissolution and compounding.\" \/>\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-for-slag-removal\/\" \/>\n<meta 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