{"id":18326,"date":"2022-08-31T07:59:07","date_gmt":"2022-08-31T07:59:07","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=18326"},"modified":"2022-08-31T08:00:58","modified_gmt":"2022-08-31T08:00:58","slug":"how-to-make-ceramic-foam","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/how-to-make-ceramic-foam\/","title":{"rendered":"Comment fabriquer de la mousse c\u00e9ramique"},"content":{"rendered":"<p><a href=\"https:\/\/www.alalloycasting.com\/fr\/alumina-ceramic-foam-filter\/\"><strong>Comment fabriquer de la mousse c\u00e9ramique <\/strong><\/a><\/p>\n<p>La recherche et le d\u00e9veloppement de filtres en c\u00e9ramique expans\u00e9e destin\u00e9s \u00e0 la fonderie ont \u00e9galement d\u00e9but\u00e9 plus t\u00f4t au Royaume-Uni. Au d\u00e9but des ann\u00e9es 1980, la c\u00e9l\u00e8bre entreprise britannique Foseco a mis au point avec succ\u00e8s un filtre en c\u00e9ramique alv\u00e9olaire (mod\u00e8le Sedex) destin\u00e9 \u00e0 la filtration des alliages non ferreux (en particulier les alliages \u00e0 base d\u2019aluminium et de cuivre), ainsi qu\u2019\u00e0 la filtration de la plupart des fontes et de certains m\u00e9taux \u00e0 haut point de fusion. Filtre en c\u00e9ramique expans\u00e9e pour alliages de cuivre (mod\u00e8le Sedex). Les pi\u00e8ces moul\u00e9es sous pression en alliage d\u2019aluminium filtr\u00e9es pr\u00e9sentent une usure des outils inf\u00e9rieure de 50% lors de l\u2019usinage par rapport aux pi\u00e8ces non filtr\u00e9es. La filtration permet d\u2019augmenter la r\u00e9sistance \u00e0 la fatigue de la fonte ductile \u00e0 ferrite d\u2019environ 10% et de r\u00e9duire l\u2019usure des outils de 0,04 \u00e0 0,1 mm ; apr\u00e8s l\u2019adoption de la technologie de filtration pour le corps de bo\u00eete en fonte ductile, gr\u00e2ce \u00e0 la simplification du syst\u00e8me d\u2019alimentation, le rendement du processus de moulage est pass\u00e9 de 39% \u00e0 0,1 mm. 63%. \u00c0 la fin des ann\u00e9es 1980, Foseco a introduit un <a href=\"https:\/\/www.alalloycasting.com\/fr\/alumina-ceramic-foam-filter\/\">filtre en mousse c\u00e9ramique<\/a> (mod\u00e8le Telex) destin\u00e9 \u00e0 la filtration des pi\u00e8ces moul\u00e9es en acier, pr\u00e9sentant une porosit\u00e9 ouverte d\u2019environ 70%. C\u2019est la soci\u00e9t\u00e9 Rolls-Royce de Fairey Ceramics, au Royaume-Uni, qui a obtenu le premier brevet pour un filtre en c\u00e9ramique alv\u00e9olaire au Royaume-Uni. Le filtre en mousse c\u00e9ramique de cette soci\u00e9t\u00e9 peut \u00eatre utilis\u00e9 pour l\u2019aluminium et les alliages cuivre-magn\u00e9sium, mais pas pour la filtration de l\u2019acier en fusion. \u00c0 la fin des ann\u00e9es 1980, l\u2019utilisation de filtres en mousse c\u00e9ramique dans la production de pi\u00e8ces moul\u00e9es de l\u2019industrie a\u00e9ronautique britannique atteignait jusqu\u2019\u00e0 25 000 pi\u00e8ces par mois.<\/p>\n<figure id=\"attachment_18334\" aria-describedby=\"caption-attachment-18334\" style=\"width: 600px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-18334\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2022\/08\/80.jpg\" alt=\"mousse c\u00e9ramique\" width=\"600\" height=\"600\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2022\/08\/80.jpg 600w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2022\/08\/80-300x300.jpg 300w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2022\/08\/80-150x150.jpg 150w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2022\/08\/80-120x120.jpg 120w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-18334\" class=\"wp-caption-text\">Comment fabriquer de la mousse c\u00e9ramique<\/figcaption><\/figure>\n<p>Outre les \u00c9tats-Unis, le Japon, le Royaume-Uni, l'Allemagne et la Suisse, d'autres pays ont \u00e9galement r\u00e9ussi \u00e0 mettre au point <a href=\"https:\/\/www.alalloycasting.com\/fr\/alumina-ceramic-foam-filter\/\">filtre en mousse c\u00e9ramique<\/a>Ces mat\u00e9riaux sont destin\u00e9s \u00e0 la filtration des alliages de fonderie et sont largement utilis\u00e9s dans la fonderie au sable, la fonderie sous pression, la fonderie \u00e0 cire perdue et d'autres proc\u00e9d\u00e9s de fonderie utilisant divers mat\u00e9riaux. La composition d\u2019un filtre en c\u00e9ramique expans\u00e9e, objet d\u2019un brevet obtenu par Swiss Aluminium Co., Ltd. en 1988, est la suivante : plus de 50 % en poids de SiC, plus de 30 % en poids de SiO\u2082, le reste \u00e9tant constitu\u00e9 d\u2019Al\u2082O\u2083. Parmi ces composants, le SiO\u2082 est utilis\u00e9 comme liant collo\u00efdal. Ce filtre en c\u00e9ramique alv\u00e9olaire est principalement utilis\u00e9 pour la filtration des alliages de fonte.<\/p>\n<p>1.22 Aper\u00e7u du d\u00e9veloppement de <a href=\"https:\/\/www.alalloycasting.com\/fr\/porous-ceramic-filter-product\/\">Filtre en c\u00e9ramique poreuse<\/a> Mat\u00e9riaux en Chine<\/p>\n<p>Les travaux de recherche sur les c\u00e9ramiques poreuses ont d\u00e9but\u00e9 dans mon pays au d\u00e9but des ann\u00e9es 1980. Au cours des vingt derni\u00e8res ann\u00e9es, plus d\u2019une douzaine d\u2019instituts de recherche scientifique et d\u2019entreprises ont men\u00e9 des travaux d\u2019exploration et de recherche sur les produits en c\u00e9ramique poreuse.<\/p>\n<p>Comment fabriquer de la mousse c\u00e9ramique. Le filtre pour m\u00e9taux ferreux (type CFF-I) mis au point par l'Universit\u00e9 des sciences et technologies de Harbin au milieu des ann\u00e9es 1980 utilise de la bauxite \u00e0 haute teneur en alumine comme agr\u00e9gat r\u00e9fractaire. Par la suite, un filtre CFF II a \u00e9t\u00e9 mis au point en ajoutant une petite quantit\u00e9 de Y\u2082O\u2083 et de CeO\u2082 comme adjuvants de frittage. La dur\u00e9e de frittage a \u00e9t\u00e9 r\u00e9duite, passant de plusieurs heures \u00e0 environ 10 minutes, et la temp\u00e9rature de frittage a \u00e9galement \u00e9t\u00e9 abaiss\u00e9e d\u2019environ 200 \u00b0C, sans que les performances du produit ne soient pour autant alt\u00e9r\u00e9es de mani\u00e8re significative. Afin d\u2019am\u00e9liorer la r\u00e9sistance du filtre en c\u00e9ramique expans\u00e9e \u00e0 la rupture fragile lors de la filtration des superalliages, l\u2019\u00e9cole a \u00e9galement ajout\u00e9 \u00e0 la poudre de corindon, mat\u00e9riau de base, un agent de renforcement \u00e0 base de ZrO\u2082 et de TO\u2082, de l\u2019argile r\u00e9fractaire et d\u2019autres adjuvants de frittage, et a utilis\u00e9 du dihydrog\u00e9nophosphate d\u2019aluminium comme liant. Le filtre en c\u00e9ramique expans\u00e9e destin\u00e9 \u00e0 l\u2019acier moul\u00e9 a \u00e9t\u00e9 mis au point \u00e0 une temp\u00e9rature de frittage de 1 560 \u2103, et ses principales propri\u00e9t\u00e9s physiques ont \u00e9t\u00e9 consid\u00e9rablement am\u00e9lior\u00e9es. L\u2019analyse des r\u00e9sultats de divers essais de filtration de m\u00e9taux en fusion montre que le filtre en c\u00e9ramique expans\u00e9e permet d\u2019\u00e9liminer efficacement les inclusions non m\u00e9talliques et autres inclusions de scories ainsi qu\u2019une partie des gaz, d\u2019am\u00e9liorer la structure m\u00e9tallographique de la pi\u00e8ce moul\u00e9e et d\u2019affiner le grain, et qu\u2019il peut augmenter la r\u00e9sistance \u00e0 la traction de l\u2019alliage d\u2019aluminium de 4 \u00e0 5%, et d\u2019augmenter l\u2019allongement de 7 \u00e0 111 TP3T ; la r\u00e9sistance \u00e0 la traction de l\u2019alliage de cuivre peut \u00eatre augment\u00e9e de 221 TP3T, l\u2019allongement peut \u00eatre presque doubl\u00e9 et la duret\u00e9 peut \u00eatre augment\u00e9e de 8 \u00e0 20 HB ; la r\u00e9sistance \u00e0 la flexion de la fonte grise peut \u00eatre augment\u00e9e d\u2019environ 51 TP3T. La r\u00e9sistance \u00e0 la traction est augment\u00e9e d\u2019environ 161 TP3T ; la r\u00e9sistance \u00e0 la traction de la fonte ductile peut \u00eatre augment\u00e9e d\u2019environ 171 TP3T, le taux d\u2019allongement d\u2019environ 401 TP3T, la duret\u00e9 d\u2019environ 101 TP3T, et la r\u00e9partition de la duret\u00e9 est plus uniforme ; l'allongement de l'acier inoxydable peut \u00eatre augment\u00e9 de 67%, et la t\u00e9nacit\u00e9 \u00e0 l'impact peut \u00eatre augment\u00e9e de 67%. Augmentation de 18%.<\/p>","protected":false},"excerpt":{"rendered":"<p>how to make ceramic foam The research and development of foam ceramic filters for casting in the UK also started earlier. In the early 1980s,&hellip;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[428],"class_list":["post-18326","post","type-post","status-publish","format-standard","hentry","category-blog","tag-ceramic-foam"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>how to make ceramic foam, ceramic foam, ceramic foams<\/title>\n<meta name=\"description\" content=\"how to make ceramic foamThe research and development of foam ceramic filters for casting in the UK also started earlier.\" \/>\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\/how-to-make-ceramic-foam\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" 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