{"id":5570,"date":"2022-04-05T10:31:02","date_gmt":"2022-04-05T08:31:02","guid":{"rendered":"https:\/\/www.promostar.it\/prodotto\/bullblocks-de-traction\/"},"modified":"2023-04-17T15:31:07","modified_gmt":"2023-04-17T13:31:07","slug":"bullblocks-de-traction","status":"publish","type":"product","link":"https:\/\/www.promostar.it\/fr\/prodotto\/bullblocks-de-traction\/","title":{"rendered":"Bullblocks de traction"},"content":{"rendered":"<p>[et_pb_section fb_built=\u00a0\u00bb1&Prime; _builder_version=\u00a0\u00bb4.17.0&Prime; _module_preset=\u00a0\u00bbdefault\u00a0\u00bb global_colors_info=\u00a0\u00bb{}\u00a0\u00bb][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les <strong>Bullblocks de traction<\/strong> sont utilis\u00e9s pour le laminage \u00e0 froid, le tr\u00e9filage et l&rsquo;\u00e9tirage du fil.<\/p>\n<p>Les <strong>bullblocks de traction<\/strong> peuvent \u00eatre consid\u00e9r\u00e9es comme l&rsquo;un des principaux composants de la machine car elles permettent de tirer le fil \u00e0 travers les <a href=\"https:\/\/www.promostar.it\/prodotto\/rolling-cassettes\/\"><u>cassettes de laminage<\/u><\/a>, des <a href=\"https:\/\/www.promostar.it\/prodotto\/die-drawing-boxes\/\"><u>boites de tr\u00e9gilage<\/u><\/a> ou de <u>panneaux d\u2019\u00e9tirage<\/u>; ils permettent ainsi de r\u00e9duire son diam\u00e8tre, d&rsquo;ajouter des torsades ou d&rsquo;augmenter son allongement afin d&rsquo;am\u00e9liorer les propri\u00e9t\u00e9s m\u00e9caniques du fil machine d&rsquo;entr\u00e9e en fonction des exigences du march\u00e9 en termes de r\u00e9sistance \u00e0 la traction, de limite d&rsquo;\u00e9lasticit\u00e9 et d&rsquo;allongement final, normalement appel\u00e9 Agt.<\/p>\n<p>Les applications du produit final sont normalement des treillis d&rsquo;armature, des \u00e9triers, des cages et des poutres en treillis pour la construction civile et industrielle, les fondations et l&rsquo;industrie de la pr\u00e9fabrication.<\/p>\n<p>On distingue principalement trois cat\u00e9gories diff\u00e9rentes :<\/p>\n<ul>\n<li>Bullblocks de traction \u00e0 axe horizontal<\/li>\n<li>Bullblocks de traction \u00e0 axe vertical<\/li>\n<li>Double bullblocks \u00e0 axe vertical<\/li>\n<\/ul>\n","protected":false},"featured_media":4173,"template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"Les <strong>Bullblocks de traction<\/strong> sont utilis\u00e9s pour le laminage \u00e0 froid, le tr\u00e9filage et l'\u00e9tirage du fil.\n\nLes <strong>bullblocks de traction<\/strong> peuvent \u00eatre consid\u00e9r\u00e9es comme l'un des principaux composants de la machine car elles permettent de tirer le fil \u00e0 travers les <u>cassettes de laminage<\/u>des <u>boites de tr\u00e9gilage<\/u> ou de <u>panneaux d\u2019\u00e9tirage<\/u>; ils permettent ainsi de r\u00e9duire son diam\u00e8tre, d'ajouter des torsades ou d'augmenter son allongement afin d'am\u00e9liorer les propri\u00e9t\u00e9s m\u00e9caniques du fil machine d'entr\u00e9e en fonction des exigences du march\u00e9 en termes de r\u00e9sistance \u00e0 la traction, de limite d'\u00e9lasticit\u00e9 et d'allongement final, normalement appel\u00e9 Agt.\n\nLes applications du produit final sont normalement des treillis d'armature, des \u00e9triers, des cages et des poutres en treillis pour la construction civile et industrielle, les fondations et l'industrie de la pr\u00e9fabrication.\n\nOn distingue principalement trois cat\u00e9gories diff\u00e9rentes :\n<ul>\n \t<li>Bullblocks de traction \u00e0 axe horizontal<\/li>\n \t<li>Bullblocks de traction \u00e0 axe vertical<\/li>\n \t<li>Double bullblocks \u00e0 axe vertical<\/li>\n<\/ul>\nLes bullblocks de traction \u00e0 axe horizontal ou vertical sont utilis\u00e9s dans les machines de laminage \u00e0 froid et la principale diff\u00e9rence est la direction de l'axe du bullblock et, par cons\u00e9quent, des cabestans. En revanche, les doubles bullblocks \u00e0 axe vertical sont utilis\u00e9s dans les machines \u00e0 \u00e9tirer le fil. Ils consistent en deux cabestans mont\u00e9s avec des axes verticaux et parall\u00e8les qui forcent le fil \u00e0 suivre une trajectoire en forme de S, \u00e9vitant ainsi que le fil ne se chevauche ou ne tourne, ce qui donne un degr\u00e9 d'\u00e9tirage suppl\u00e9mentaire au produit.\n\nChaque cat\u00e9gorie est con\u00e7ue avec une structure compacte afin de donner le maximum de rigidit\u00e9 pendant le processus de transformation du fil, tous les m\u00e9canismes internes \u00e9tant lubrifi\u00e9s par de l'huile sous pression. L'unit\u00e9 et ses \u00e9l\u00e9ments sont compl\u00e8tement ferm\u00e9s par des carters de protection.\n\nChaque mod\u00e8le peut \u00eatre \u00e9quip\u00e9 de diff\u00e9rentes tailles de moteurs et de solutions de r\u00e9ducteurs en fonction de la table de production de nos clients.\n\nLe nombre de cabestans de laminage \u00e0 froid permet d'effectuer la r\u00e9duction demand\u00e9e (la double r\u00e9duction est \u00e9galement possible sur le m\u00eame bloc) et la relaxation de contraintes du fil \u00e0 l'aide d'un cabestan d\u00e9di\u00e9. Les cabestans en V peuvent \u00eatre mont\u00e9s en plus des cabestans de laminage \u00e0 froid existants sur les machines qui sont d\u00e9di\u00e9es aux deux processus de production de fil : laminage \u00e0 froid et \u00e9tirage (par exemple, notre <a href=\"\/prodotto\/cold-rolling-line-vegastar\/\"><u>machine de laminage \u00e0 froid type Vegastar<\/u><\/a><u>)<\/u>.\n\nLes <strong>bullblocks de traction<\/strong> sont con\u00e7us et fabriqu\u00e9e par Promostar en collaboration avec ses partenaires en utilisant les derni\u00e8res technologies et les meilleures marques disponibles sur le march\u00e9.","_et_gb_content_width":""},"product_cat":[158],"product_tag":[99,106,111,118,135],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bullblocks de traction | Promostar<\/title>\n<meta name=\"description\" content=\"Les Bullblocks de traction sont utilis\u00e9s pour le laminage \u00e0 froid, le 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