{"id":7938,"date":"2021-02-25T08:19:28","date_gmt":"2021-02-25T08:19:28","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=7938"},"modified":"2021-02-25T08:19:28","modified_gmt":"2021-02-25T08:19:28","slug":"continuous-cast-rolling","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/continuous-cast-rolling\/","title":{"rendered":"Technologie de laminage par coul\u00e9e continue"},"content":{"rendered":"<p>Le processus consistant \u00e0 \u201c laminer \u201d directement le m\u00e9tal en fusion pour obtenir des produits semi-finis ou finis est appel\u00e9 \u00ab technologie de coul\u00e9e-laminage en continu \u00bb. La diff\u00e9rence fondamentale entre la coul\u00e9e continue \u00e0 double cylindre et les autres m\u00e9thodes de coul\u00e9e continue en lingots r\u00e9side dans le fait que le moule est constitu\u00e9 de deux cylindres de coul\u00e9e rotatifs \u00e9quip\u00e9s d\u2019un syst\u00e8me de refroidissement, et que le m\u00e9tal liquide doit \u00eatre solidifi\u00e9 puis lamin\u00e9 \u00e0 chaud dans l\u2019interstice entre les deux cylindres ; ce processus s\u2019effectue dans une zone restreinte (zone de coul\u00e9e-laminage) en un temps tr\u00e8s court (2 \u00e0 3 secondes). La coul\u00e9e-laminage en continu n\u2019est pas la m\u00eame chose que la coul\u00e9e et le laminage en continu. La coul\u00e9e et le laminage en continu d\u00e9signent le processus de laminage en continu sur des laminoirs successifs apr\u00e8s que le m\u00e9tal liquide s\u2019est solidifi\u00e9 en billettes dans le moule de la machine de coul\u00e9e. La coul\u00e9e et le laminage des billettes sont deux proc\u00e9d\u00e9s ind\u00e9pendants.<\/p>\n<p><strong>Caract\u00e9ristiques de la technologie de laminage par coul\u00e9e continue<\/strong><\/p>\n<p>Le m\u00e9tal en fusion est directement transform\u00e9 en billette ou en mati\u00e8re premi\u00e8re, ce qui raccourcit le processus de production, le simplifie et permet de r\u00e9aliser d'importantes \u00e9conomies en termes d'investissements en \u00e9quipements et de consommation de ressources. Une seule installation de coul\u00e9e et de laminage peut remplacer la machine de coul\u00e9e en continu traditionnelle, le four de chauffage et la machine \u00e0 billettes, et son co\u00fbt d\u2019\u00e9quipement ne repr\u00e9sente qu\u2019un tiers de celui des billettes lamin\u00e9es \u00e0 chaud. Gr\u00e2ce \u00e0 la suppression du chauffage secondaire et \u00e0 la r\u00e9duction du nombre de passes de laminage, la consommation d\u2019\u00e9nergie n\u2019atteint que 40% de celle de la m\u00e9thode de production traditionnelle.<\/p>\n<p>La vitesse de refroidissement du laminage par coul\u00e9e continue atteint 100 \u00e0 1 000 K\/s, ce qui est bien sup\u00e9rieur \u00e0 celle de la <a href=\"http:\/\/www.alalloycasting.com\/fr\/aluminum-die-casting\/\">Moulage en courant continu<\/a> m\u00e9thode (2-3 K\/s). Par cons\u00e9quent, l'espacement des dendrites de la t\u00f4le coul\u00e9e-lamin\u00e9e n'est que de 5 \u00e0 10 \u03bcm, les particules de compos\u00e9 m\u00e9tallique sont fines, de 1 \u00e0 2 \u03bcm, et la sursaturation de l\u2019\u00e9l\u00e9ment solut\u00e9 dans la solution solide est consid\u00e9rablement am\u00e9lior\u00e9e, ce qui augmente la r\u00e9sistance \u00e0 la traction et la limite d\u2019\u00e9lasticit\u00e9 des nuances 10% \u00e0 20% issues du laminage \u00e0 chaud, tandis que la temp\u00e9rature de recristallisation augmente de plusieurs dizaines de degr\u00e9s.<\/p>\n<p>La combinaison du moulage et du laminage am\u00e9liore la compacit\u00e9 de la structure m\u00e9tallique, \u00e9limine le retrait et la porosit\u00e9, r\u00e9duit les d\u00e9fauts tels que la s\u00e9gr\u00e9gation, \u00e9limine les bords de coupe et les extr\u00e9mit\u00e9s, et augmente le taux de rendement d'environ 15%.<\/p>\n<p>Elle permet d'assurer une production continue et automatis\u00e9e de coul\u00e9e et de laminage, ce qui favorise une gestion rationnelle et l'am\u00e9lioration des conditions de travail.<\/p>","protected":false},"excerpt":{"rendered":"<p>The process of directly &#8220;rolling&#8221; molten metal into semi-finished or finished products is called continuous cast rolling technology. The fundamental difference between twin-roll continuous casting&hellip;<\/p>","protected":false},"author":1,"featured_media":7939,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-7938","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Continuous Cast Rolling Technology for Molten Metal<\/title>\n<meta name=\"description\" content=\"The process of directly &quot;rolling&quot; molten metal into semi-finished or finished products is called continuous cast rolling technology.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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