{"id":3422,"date":"2020-08-05T09:43:22","date_gmt":"2020-08-05T09:43:22","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=3422"},"modified":"2020-09-02T06:48:49","modified_gmt":"2020-09-02T06:48:49","slug":"aluminum-melt-purification-mechanisms","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-melt-purification-mechanisms\/","title":{"rendered":"M\u00e9canismes de purification de l'aluminium fondu"},"content":{"rendered":"<p>Au cours du processus de fusion et de coul\u00e9e de l'aluminium, les bulles, le film d'oxyde et les inclusions non m\u00e9talliques compromettent la continuit\u00e9 des mat\u00e9riaux m\u00e9talliques, r\u00e9duisent la section porteuse effective des pi\u00e8ces moul\u00e9es et provoquent une concentration de contraintes, ce qui diminue les propri\u00e9t\u00e9s m\u00e9caniques et les aptitudes \u00e0 l'usinage des pi\u00e8ces moul\u00e9es. Afin d'\u00e9viter ces risques, outre le nettoyage de la charge du four, il est \u00e9galement n\u00e9cessaire de purifier la masse d'aluminium fondu, ce qui peut \u00eatre class\u00e9 en trois cat\u00e9gories selon les diff\u00e9rents m\u00e9canismes et formes de purification de la masse d'aluminium fondu.<\/p>\n<h2>M\u00e9canismes de purification de l'aluminium fondu<\/h2>\n<p>(1) Purification par adsorption : au cours du processus de fusion, on fait passer du chlore, de l\u2019azote ou un gaz inerte dans l\u2019aluminium fondu, ou bien on ajoute certains sels de chlore (tels que le ZnC, le MnCl, CCl\u2084, etc.) capables de r\u00e9agir avec l\u2019aluminium fondu pour former des bulles \u2014 ce proc\u00e9d\u00e9 est appel\u00e9 \u00ab flottation \u00e0 bulles \u00bb \u2014, ou bien on utilise du KCl et du NaCl pour former un fondant, ce qui permet d\u2019\u00e9liminer le gaz et les inclusions pr\u00e9sents dans l\u2019alliage par adsorption de l\u2019agent d\u2019affinage<\/p>\n<p>(2) Purification physique : la masse d'aluminium fondu est purifi\u00e9e \u00e0 l'aide de proc\u00e9d\u00e9s physiques, tels que le traitement par ultrasons, le traitement par courant continu et le traitement sous vide.<\/p>\n<p>(3) Purification par filtration : le m\u00e9tal liquide s'\u00e9coule \u00e0 travers un milieu sp\u00e9cifique, ce qui permet de retenir les inclusions et, par cons\u00e9quent, de purifier le m\u00e9tal.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4420\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/08\/Aluminum-Melt-Purification-Mechanisms-1.jpg\" alt=\"M\u00e9canismes de purification de l&#039;aluminium fondu\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/08\/Aluminum-Melt-Purification-Mechanisms-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/08\/Aluminum-Melt-Purification-Mechanisms-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>D\u00e8s 1978, le nouveau filtre mis au point par les \u00c9tats-Unis et un <a href=\"http:\/\/www.alalloycasting.com\/fr\/ceramic-foam-filter\/\">filtre en mousse c\u00e9ramique<\/a> C'est un support de filtration tr\u00e8s performant. Sa conception en fait un filtre hautement efficace destin\u00e9 \u00e0 la production de pi\u00e8ces moul\u00e9es en aluminium.<\/p>\n<p><a href=\"http:\/\/www.alalloycasting.com\/fr\/alumina-ceramic-foam-filters\/\">Filtres en mousse c\u00e9ramique d'alumine<\/a> Ils sont principalement utilis\u00e9s pour la filtration de l'aluminium fondu et des alliages dans les fonderies. Le filtre pr\u00e9sente une excellente r\u00e9sistance \u00e0 la corrosion par l'aluminium fondu ; il permet d'\u00e9liminer efficacement les inclusions, de r\u00e9duire les gaz r\u00e9siduels et d'assurer un \u00e9coulement laminaire, ce qui rend le m\u00e9tal filtr\u00e9 nettement plus propre. Des m\u00e9taux plus purs permettent d'obtenir des pi\u00e8ces moul\u00e9es de meilleure qualit\u00e9, de r\u00e9duire le nombre de rebuts et de d\u00e9fauts dus aux inclusions, ce qui contribue \u00e0 augmenter les b\u00e9n\u00e9fices.<\/p>","protected":false},"excerpt":{"rendered":"<p>In the process of aluminum melting and casting, bubbles, oxide film and non-metallic inclusions destroy the continuity of metal materials, reduce the effective bearing section&hellip;<\/p>","protected":false},"author":1,"featured_media":3423,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[1778,4128,4133,1783,1455,1774,1454,4523,1451,4639,4131,432,4518,4635,1438,1757,1753,21,1601,427,1784,4637,219,4508,4129,3867,425,4521,1597,4497,4638,1729,4507,165,4636,1781,1782,4526,4525,4522,1780,752],"class_list":["post-3422","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo","tag-alumina-ceramic-foam-filters","tag-alumina-foam-ceramic-filters","tag-aluminum-casting-filter-media","tag-aluminum-melt-purification-mechanisms","tag-asian-foundry-filters","tag-cast-filters","tag-casting-filter","tag-ceramic-casting-filters","tag-ceramic-disc-filter","tag-ceramic-fiber-filter-application","tag-ceramic-filter-for-casting","tag-ceramic-filter-foundry","tag-ceramic-filter-plate","tag-ceramic-filter-plates","tag-ceramic-filter-suppliers","tag-ceramic-filters","tag-ceramic-filters-for-foundry","tag-ceramic-foam-filter","tag-ceramic-foam-filter-manufacturer-process","tag-ceramic-foam-filter-manufacturers","tag-ceramic-foam-filter-purification","tag-ceramic-foam-filter-selection","tag-ceramic-foam-filter-suppliers","tag-ceramic-foam-filter-uses","tag-ceramic-foam-filters-applications","tag-ceramic-foam-filters-for-aluminum","tag-ceramic-foam-filters-for-casting","tag-cff-filters","tag-filter-foundry","tag-filtering-molten-aluminum","tag-foam-ceramic-casting-filters","tag-foam-ceramic-filters","tag-foam-ceramic-filters-manufacturer","tag-foam-filter-manufacturers","tag-foam-filter-manufacturing-process","tag-foam-furnace-filters","tag-metal-foam-filters","tag-molten-aluminum-foam-filter","tag-molten-metal-ceramic-filters","tag-molten-metal-foam-filters","tag-porous-ceramic-filters","tag-zirconia-ceramic-foam-filter"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aluminum Melt Purification Mechanisms,Ceramic Foam Filter Purification<\/title>\n<meta name=\"description\" content=\"Ceramic foam filters are mainly used for filtering molten aluminum and alloys. It is one important aluminum melt purification mechanisms.\" \/>\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\/aluminum-melt-purification-mechanisms\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Aluminum Melt Purification Mechanisms,Ceramic Foam Filter Purification\" \/>\n<meta property=\"og:description\" content=\"Ceramic foam filters are mainly used for filtering molten aluminum and alloys. 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