{"id":10240,"date":"2021-09-10T05:48:21","date_gmt":"2021-09-10T05:48:21","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10240"},"modified":"2021-09-10T05:48:21","modified_gmt":"2021-09-10T05:48:21","slug":"foundry-deep-bed-filter","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/foundry-deep-bed-filter\/","title":{"rendered":"Filtre \u00e0 lit profond pour fonderie"},"content":{"rendered":"<p>Le filtre \u00e0 lit profond destin\u00e9 \u00e0 la fonderie fait partie des filtres les plus couramment utilis\u00e9s. La technologie de filtration en profondeur est d\u00e9sormais reconnue dans le domaine de la fonderie et permet de r\u00e9pondre aux besoins des produits haut de gamme soumis \u00e0 des exigences de qualit\u00e9 \u00e9lev\u00e9es. Le filtre \u00e0 lit profond pr\u00e9sente les avantages d\u2019une grande surface de filtration et d\u2019une efficacit\u00e9 de filtration \u00e9lev\u00e9e. Pour les impuret\u00e9s sup\u00e9rieures \u00e0 5 \u00b5m, l'efficacit\u00e9 de filtration est sup\u00e9rieure \u00e0 90%.<\/p>\n<p>Le filtre \u00e0 lit profond pour fonderie est constitu\u00e9 de plusieurs couches de billes d\u2019alumine et d\u2019une couche de gravier d\u2019alumine de taille appropri\u00e9e, empil\u00e9es selon une m\u00e9thode unique ; l\u2019\u00e9paisseur du milieu filtrant atteint 500 mm. La taille et la m\u00e9thode d\u2019empilement des billes et du gravier d\u2019alumine doivent \u00eatre adapt\u00e9es en fonction des diff\u00e9rents alliages. Les inclusions sont adsorb\u00e9es \u00e0 la surface du milieu filtrant de quatre mani\u00e8res : par interception directe, par mouvement brownien, par force d\u2019inertie et par pr\u00e9cipitation gravitationnelle.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-10242\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2021\/09\/Deep-Bed-Filter-Device.jpg\" alt=\"\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/09\/Deep-Bed-Filter-Device.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2021\/09\/Deep-Bed-Filter-Device-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Dans le processus de fabrication des bo\u00eetes de conserve, les alliages d\u2019aluminium doivent \u00eatre trait\u00e9s par laminage \u00e0 chaud, laminage \u00e0 froid et emboutissage profond, ce qui exige une qualit\u00e9 \u00e9lev\u00e9e de la fonte et des lingots. L\u2019utilisation efficace des filtres \u00e0 lit profond a une incidence directe sur la qualit\u00e9 du produit, le rendement de production et les co\u00fbts. La mouillabilit\u00e9 de la fonte d\u2019aluminium sur l\u2019alumine est \u00e9troitement li\u00e9e au processus de purification de la fonte.<\/p>\n<p>La taille des pores de la couche filtrante du filtre \u00e0 lit profond est 100 fois sup\u00e9rieure \u00e0 celle des particules d'impuret\u00e9s \u00e0 filtrer. Si la vitesse de filtration est comprise entre 0,1 et 0,4 cm\/s, l'interception et l'adh\u00e9rence des particules d'impuret\u00e9s par la couche filtrante sont optimis\u00e9es. Contrairement \u00e0 la <a href=\"http:\/\/www.alalloycasting.com\/fr\/ceramic-foam-filtration\/\">filtration sur mousse c\u00e9ramique<\/a> Gr\u00e2ce \u00e0 cette m\u00e9thode, le filtre \u00e0 lit profond n'est pas affect\u00e9 par les variations de densit\u00e9 des particules d'impuret\u00e9s.<\/p>\n<p>Dans la pratique industrielle, il est indispensable que le m\u00e9tal liquide remplisse enti\u00e8rement l'espace de la couche filtrante ; dans le cas contraire, l'efficacit\u00e9 de filtration serait r\u00e9duite et la dur\u00e9e de vie du lit filtrant s'en trouverait \u00e9galement affect\u00e9e. Pendant son utilisation, les dispositifs de chauffage sup\u00e9rieurs et inf\u00e9rieurs servent \u00e0 chauffer et \u00e0 maintenir le filtre \u00e0 temp\u00e9rature, ce qui permet de prolonger sa dur\u00e9e de vie, et la production de m\u00e9tal coul\u00e9 peut d\u00e9passer 7 000 tonnes. Par cons\u00e9quent, le filtre \u00e0 lit profond pour fonderie est adapt\u00e9 \u00e0 la production de lots d'alliages de grande envergure.<\/p>","protected":false},"excerpt":{"rendered":"<p>The deep bed filter for foundry is one of the commonly used filters. The deep filtration technology has been recognized in the casting field and&hellip;<\/p>","protected":false},"author":1,"featured_media":10241,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-10240","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-filtering-equipment"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Foundry Deep Bed Filter -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"The foundry deep bed filter is one of the commonly used filters. 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