{"id":11073,"date":"2021-11-08T09:11:10","date_gmt":"2021-11-08T09:11:10","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=11073"},"modified":"2021-11-08T09:11:10","modified_gmt":"2021-11-08T09:11:10","slug":"continuous-casting-rolling","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/continuous-casting-rolling\/","title":{"rendered":"Coul\u00e9e continue et laminage"},"content":{"rendered":"

Le proc\u00e9d\u00e9 de coul\u00e9e-laminage en continu \u00e0 double cylindre, utilis\u00e9 pour la fabrication de bandes brutes coul\u00e9es-lamin\u00e9es, d\u00e9signe un proc\u00e9d\u00e9 de production dans lequel le m\u00e9tal liquide est directement cristallis\u00e9 entre deux cylindres en rotation et transform\u00e9 simultan\u00e9ment en bande brute. En raison de la simplicit\u00e9 de son processus de production, de la bri\u00e8vet\u00e9 de son d\u00e9lai de construction, de son faible co\u00fbt de production, de son faible investissement et de son faible encombrement, cette technologie s'est largement d\u00e9velopp\u00e9e.<\/p>\n

Le proc\u00e9d\u00e9 de coul\u00e9e-laminage en continu consiste \u00e0 introduire en continu du m\u00e9tal en fusion entre deux cylindres de coul\u00e9e int\u00e9rieurs, refroidis \u00e0 l'eau, qui tournent l'un par rapport \u00e0 l'autre. Gr\u00e2ce au refroidissement et \u00e0 la coul\u00e9e, la bande d'aluminium coul\u00e9e-lamin\u00e9e est lamin\u00e9e directement et en continu.<\/p>\n

La caract\u00e9ristique principale de ce proc\u00e9d\u00e9 r\u00e9side dans l'utilisation de deux cylindres de coul\u00e9e rotatifs refroidis \u00e0 l'eau comme cristalliseurs ; la masse d'aluminium en fusion subit ainsi, en tr\u00e8s peu de temps, les deux \u00e9tapes de solidification et de d\u00e9formation par laminage \u00e0 chaud entre les jeux des cylindres de coul\u00e9e. La bande d'aluminium brute produite par ce proc\u00e9d\u00e9 pr\u00e9sente moins de pertes, un rendement \u00e9lev\u00e9, un nombre r\u00e9duit d'\u00e9tapes de fabrication, un cycle court et une grande efficacit\u00e9 de production.<\/p>\n

La fonction de la coul\u00e9e buse d'alimentation<\/a>\u00a0consiste \u00e0 acheminer l'aluminium en fusion dans l'interstice entre les cylindres de coul\u00e9e. Par cons\u00e9quent, la buse d'alimentation est un composant essentiel qui assure directement la distribution et le transport de l'aluminium en fusion vers l'interstice des cylindres dans le processus de coul\u00e9e continue et de laminage ; elle constitue \u00e9galement le goulot d'\u00e9tranglement du syst\u00e8me de coul\u00e9e. Sa conception ad\u00e9quate a une incidence directe sur la qualit\u00e9 et le rendement de la production.<\/p>\n

\"Conseil<\/p>\n

La buse d'alimentation est compos\u00e9e d'un \u00e9vent en forme de bouche, d'un joint d'\u00e9tanch\u00e9it\u00e9 et de pattes lat\u00e9rales. La l\u00e8vre de la buse d'alimentation ne doit pas \u00eatre trop \u00e9paisse, car une \u00e9paisseur excessive risquerait de frotter contre la surface du rouleau et de rayer \u00e0 la fois celle-ci et la surface de la plaque. La l\u00e8vre de la buse d'alimentation ne doit pas non plus \u00eatre trop fine, car elle s'ab\u00eemerait facilement. Il est n\u00e9cessaire de tenir compte de sa relation avec le canal d'\u00e9coulement afin de s'assurer que ce dernier est suffisamment large pour garantir un \u00e9coulement sans obstruction du liquide. La d\u00e9termination de la taille de la l\u00e8vre de la buse d'alimentation doit \u00eatre \u00e9troitement li\u00e9e \u00e0 la zone de coul\u00e9e, \u00e0 l'alliage, \u00e0 l'\u00e9paisseur de la t\u00f4le et \u00e0 la taille du canal de coul\u00e9e.<\/p>\n

Les exigences relatives au dispositif de buse d'alimentation sont les suivantes :<\/p>\n

(1) La structure doit \u00eatre solide et fiable afin de garantir une production continue.
\n(2) La structure doit \u00eatre simple, facile \u00e0 utiliser et \u00e0 remplacer.
\n(3) La buse d'alimentation pr\u00e9sente une meilleure r\u00e9sistance \u00e0 la chaleur et offre une bonne conservation de la chaleur.<\/p>","protected":false},"excerpt":{"rendered":"

The double-roll continuous casting-rolling method to produce cast-rolled strip blanks refers to a production method in which liquid metal is directly crystallized between two rotating…<\/p>","protected":false},"author":1,"featured_media":11074,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-11073","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nContinuous Casting Rolling with Caster Tip and Nozzle<\/title>\n<meta name=\"description\" content=\"The double-roll continuous casting-rolling method is directly crystallized between two rotating rolls and processed into a strip blank.\" \/>\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\/continuous-casting-rolling\/\" 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