{"id":5880,"date":"2020-10-21T08:10:35","date_gmt":"2020-10-21T08:10:35","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=5880"},"modified":"2020-10-26T03:37:36","modified_gmt":"2020-10-26T03:37:36","slug":"purification-method","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/purification-method\/","title":{"rendered":"M\u00e9thode de purification"},"content":{"rendered":"<p>La m\u00e9thode de purification consistant \u00e0 faire passer la masse fondue \u00e0 travers un filtre compos\u00e9 de substances neutres ou actives afin de s\u00e9parer les inclusions solides en suspension dans la masse fondue est appel\u00e9e \u00ab filtration \u00bb. La filtration est la m\u00e9thode la plus efficace et la plus fiable pour \u00e9liminer les inclusions non m\u00e9talliques de la masse fondue d'aluminium.<\/p>\n<p><strong>M\u00e9thode de purification<\/strong><\/p>\n<p>Utilisez des mat\u00e9riaux filtrants actifs ou inertes pour filtrer la masse fondue. Lorsque l'alliage traverse le filtre actif, il est retenu en raison de l'adsorption des particules d'inclusions solides par le filtre. Lorsque l'alliage passe \u00e0 travers un filtre inerte, les impuret\u00e9s sont \u00e9limin\u00e9es \u00e0 l'aide d'une barri\u00e8re m\u00e9canique.<\/p>\n<p>Le filtre inerte est un treillis constitu\u00e9 de verre d'aluminium-bore exempt d'alcalis, \u00e9galement appel\u00e9 \u00ab filtre \u00e0 mailles \u00bb. Si, lors de la filtration, la taille des particules d'impuret\u00e9s solides non m\u00e9talliques est sup\u00e9rieure \u00e0 celle des mailles du filtre, celles-ci seront retenues. Toutefois, la taille des mailles ne peut pas d\u00e9passer 0,5 \u00d7 0,5 m, car le bain d\u2019aluminium en fusion ne peut pas traverser une toile filtrante en verre de 0,5 \u00d7 0,5 m. N\u00e9anmoins, l\u2019utilisation d\u2019un filtre \u00e0 mailles adapt\u00e9 permet de r\u00e9duire la teneur en inclusions solides de l\u2019alliage \u00e0 2\/3-1\/2 de la teneur initiale.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-5881\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/10\/Purification-Method.jpg\" alt=\"M\u00e9thode de purification\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/10\/Purification-Method.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/10\/Purification-Method-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Utiliser un mat\u00e9riau filtrant en blocs. <a href=\"http:\/\/www.alalloycasting.com\/fr\/ceramic-foam-filter-uses\/\">Filtre en mousse c\u00e9ramique<\/a> La plaque est le mat\u00e9riau de filtration en bloc le plus utilis\u00e9. La filtration par mousse c\u00e9ramique est un moyen tr\u00e8s efficace pour garantir la puret\u00e9 du m\u00e9tal en fusion pendant le processus de coul\u00e9e. Elle se caract\u00e9rise par une tr\u00e8s bonne conductivit\u00e9 thermique, une grande stabilit\u00e9 et une r\u00e9sistance aux variations brusques de temp\u00e9rature. Le filtre en mousse c\u00e9ramique repose sur le principe de l\u2019adsorption, ce qui permet d\u2019\u00e9liminer efficacement les particules d\u2019impuret\u00e9s, qu\u2019elles soient grosses ou fines, sans laisser de r\u00e9sidus, r\u00e9duisant ainsi efficacement la pollution de l\u2019aluminium en fusion. Son excellente r\u00e9sistance aux chocs thermiques am\u00e9liore la r\u00e9sistance \u00e0 l'\u00e9rosion du m\u00e9tal en fusion, stabilise l'\u00e9coulement de l'aluminium en fusion, facilite la coul\u00e9e et le remplissage, r\u00e9duit les d\u00e9fauts li\u00e9s aux scories et aux piq\u00fbres, et am\u00e9liore la qualit\u00e9 et la productivit\u00e9 des alliages d'aluminium.<\/p>\n<p>Ses dimensions g\u00e9n\u00e9rales sont de 200 \u00d7 600 \u00d7 50 mm, et sa porosit\u00e9 atteint 0,8 \u00e0 0,9. Il se caract\u00e9rise par sa facilit\u00e9 d'utilisation et son bon rendement de filtration. Il ne n\u00e9cessite pas de hauteur de pression \u00e9lev\u00e9e pendant la filtration. La taille initiale est comprise entre 100 et 150 mm, et ne mesure plus que 2 \u00e0 10 m apr\u00e8s filtration. Le filtre en mousse c\u00e9ramique est moins co\u00fbteux. Apr\u00e8s filtration, les inclusions solides pr\u00e9sentes dans la masse fondue sont consid\u00e9rablement r\u00e9duites. Un joint d\u2019\u00e9tanch\u00e9it\u00e9 entoure le filtre en mousse c\u00e9ramique ; il est plac\u00e9 entre le filtre et le bo\u00eetier de filtration afin d\u2019emp\u00eacher l\u2019aluminium fondu de s\u2019\u00e9chapper par l\u2019interface.<\/p>","protected":false},"excerpt":{"rendered":"<p>The purification method in which the melt passes through a filter composed of neutral or active substances to separate the solid inclusions suspended in the&hellip;<\/p>","protected":false},"author":1,"featured_media":5881,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[5696,5695,5689,5690,5694,5700,5699,5698,5718,5719,5702,5705,5706,5707,5704,5703,5708,5709,5712,5713,5710,5711,5717,5693,5697,5714,5716,5692,5701,5691,5715],"class_list":["post-5880","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-purification-method-in-aluminium-indonesia","tag-purification-method-in-aluminum-die-casting-indonesia","tag-purification-method-in-aluminum-indonesia","tag-purification-method-in-aluminum-indonesia-jakarta","tag-purification-method-in-aluminum-smelter-indonesia","tag-purification-method-in-daiki-aluminium-indonesia","tag-purification-method-in-hyundai-aluminium-indonesia","tag-purification-method-in-il-sogno-aluminium-indonesia","tag-purification-method-in-inalum","tag-purification-method-in-inalum-adalah","tag-purification-method-in-indonesia-aluminium","tag-purification-method-in-indonesia-aluminium-foil","tag-purification-method-in-indonesia-aluminium-industry","tag-purification-method-in-indonesia-aluminium-ingot","tag-purification-method-in-indonesia-aluminium-production","tag-purification-method-in-indonesia-aluminium-smelter","tag-purification-method-in-indonesia-aluminum","tag-purification-method-in-indonesia-aluminum-company","tag-purification-method-in-indonesia-aluminum-ingot","tag-purification-method-in-indonesia-aluminum-production","tag-purification-method-in-indonesia-aluminum-smelter","tag-purification-method-in-indonesia-aluminum-supplier","tag-purification-method-in-lme-aluminium","tag-purification-method-in-nanshan-aluminum-indonesia","tag-purification-method-in-pt-daiki-aluminium-indonesia","tag-purification-method-in-pt-indonesia-aluminum","tag-purification-method-in-pt-indonesia-asahan-aluminium","tag-purification-method-in-showa-aluminum-indonesia","tag-purification-method-in-xinfa-aluminium-indonesia","tag-purification-method-in-ykk-aluminum-indonesia","tag-purification-method-in-ykk-indonesia-aluminum"],"yoast_head":"<!-- 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