{"id":6278,"date":"2020-11-06T07:11:26","date_gmt":"2020-11-06T07:11:26","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6278"},"modified":"2020-11-06T07:11:26","modified_gmt":"2020-11-06T07:11:26","slug":"refractory-dam","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/refractory-dam\/","title":{"rendered":"Barrage en mat\u00e9riaux r\u00e9fractaires"},"content":{"rendered":"<p>Le barrage r\u00e9fractaire est constitu\u00e9 des \u00e9l\u00e9ments techniques suivants : d\u00e9flecteur de la goulotte, plaque de protection arri\u00e8re, plaque de protection avant, rainure d'\u00e9tanch\u00e9it\u00e9, trou de fixation, trou de montage, bande d'\u00e9tanch\u00e9it\u00e9 de la goulotte, support de bande d'\u00e9tanch\u00e9it\u00e9, cylindre, support de cylindre, la t\u00f4le d'acier \u00e0 l'extr\u00e9mit\u00e9 du cylindre et le profil\u00e9 en U sur la plaque de fond ; la section du d\u00e9flecteur de la roue est constitu\u00e9e d'une plaque r\u00e9fractaire plate de forme trap\u00e9zo\u00efdale, dont la forme correspond \u00e0 la section transversale int\u00e9rieure de la roue.<\/p>\n<p>Lors de la coul\u00e9e de brames en alliage d'aluminium, l'aluminium en fusion s'\u00e9coule par la sortie du four, traverse la longue goulotte pour rejoindre la goulotte de distribution, o\u00f9 s'effectue la coul\u00e9e. Le d\u00e9flecteur de la goulotte sert \u00e0 contr\u00f4ler la coul\u00e9e. Au d\u00e9but, la position de l'aluminium en fusion dans la goulotte doit atteindre le niveau requis par les param\u00e8tres techniques de coul\u00e9e. Ce n'est que lorsque le niveau de l'aluminium en fusion atteint cette hauteur que celui-ci peut s'\u00e9couler rapidement \u00e0 travers la goulotte et garantir que sa temp\u00e9rature r\u00e9pond aux exigences de la coul\u00e9e. De cette mani\u00e8re, l'aluminium en fusion peut remplir rapidement le moule pour mener \u00e0 bien la coul\u00e9e.<\/p>\n<p>La goulotte de coul\u00e9e de la paroi r\u00e9fractaire de l'\u00e9quipement d'origine pr\u00e9sente une section trap\u00e9zo\u00efdale. Dans la pratique de production, en raison de la position \u00e9lev\u00e9e de montage du d\u00e9flecteur, lorsque l'aluminium en fusion atteint une certaine hauteur dans la goulotte d'\u00e9coulement et que le v\u00e9rin soul\u00e8ve le d\u00e9flecteur, l'\u00e9lan de l'aluminium en fusion g\u00e9n\u00e8re une force de cisaillement qui provoque la rupture du d\u00e9flecteur au niveau du joint, ce qui r\u00e9duit consid\u00e9rablement sa dur\u00e9e de vie. Par ailleurs, la chicane du canal d\u2019\u00e9coulement n\u2019est pas dot\u00e9e d\u2019une rainure d\u2019\u00e9tanch\u00e9it\u00e9 ; une courroie plate est utilis\u00e9e pour assurer l\u2019\u00e9tanch\u00e9it\u00e9, ce qui est non seulement difficile \u00e0 mettre en place et co\u00fbteux, mais pr\u00e9sente \u00e9galement une \u00e9tanch\u00e9it\u00e9 insuffisante et entra\u00eene un risque de fuite d\u2019aluminium. La manipulation du d\u00e9flecteur endommag\u00e9 par l\u2019op\u00e9rateur pr\u00e9sente encore certains risques pour la s\u00e9curit\u00e9. En raison de l\u2019endommagement du d\u00e9flecteur, des scories peuvent tomber dans l\u2019aluminium en fusion, entra\u00eenant des d\u00e9fauts de qualit\u00e9 des pi\u00e8ces moul\u00e9es ou la production de rebuts.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6279\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/11\/Refractory-Dam-1.jpg\" alt=\"Barrage en mat\u00e9riaux r\u00e9fractaires\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/11\/Refractory-Dam-1.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/11\/Refractory-Dam-1-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Pour pallier les lacunes de l'\u00e9tat de la technique, AdTech propose une <a href=\"http:\/\/www.alalloycasting.com\/fr\/launder-dam\/\">barrage de retenue<\/a>, qui est utilis\u00e9 dans la production de brames en alliage d'aluminium pour contr\u00f4ler la position de l'aluminium en fusion dans la goulotte au d\u00e9but de la coul\u00e9e.<\/p>","protected":false},"excerpt":{"rendered":"<p>The Refractory Dam is realized by the following technical solutions: including runner baffle, rear guard plate, front guard plate, sealing groove, fixing hole, mounting hole,&hellip;<\/p>","protected":false},"author":1,"featured_media":6280,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[],"class_list":["post-6278","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Refractory Dam used to Control Aluminum Casting<\/title>\n<meta name=\"description\" content=\"AdTech provides refractory dam, which is used in the production of aluminum alloy slabs to 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