{"id":8304,"date":"2025-04-12T15:33:41","date_gmt":"2025-04-12T07:33:41","guid":{"rendered":"https:\/\/www.hnhlcranes.com\/?p=8304"},"modified":"2025-04-12T15:40:37","modified_gmt":"2025-04-12T07:40:37","slug":"selection-des-materiaux-pour-les-roues-de-ponts-roulants","status":"publish","type":"post","link":"https:\/\/www.hnhlcranes.com\/fr\/selection-des-materiaux-pour-les-roues-de-ponts-roulants\/","title":{"rendered":"S\u00e9lection des mat\u00e9riaux des roues de ponts roulants"},"content":{"rendered":"

Le mat\u00e9riau de la roue du pont roulant est g\u00e9n\u00e9ralement choisi en fonction de l'environnement d'utilisation (charge, fr\u00e9quence, usure). Voici quelques mat\u00e9riaux couramment utilis\u00e9s dans l'industrie et leurs caract\u00e9ristiques :<\/p>\n

1. ZG430-640 (acier moul\u00e9)\"\"<\/a> \"\"<\/a><\/strong><\/h3>\n

Selon la norme chinoise GB\/T 11352-2009<\/strong> (Carbon Structural Cast Steel), ZG430-640 est l'un des mat\u00e9riaux les plus couramment utilis\u00e9s pour les roues de grues.<\/p>\n

    \n
  • \n

    Il fournit un r\u00e9sistance \u00e0 la traction de \u2265 640 MPa<\/strong>, a limite d'\u00e9lasticit\u00e9 de \u2265 430 MPa<\/strong>et un \u00e9longation de \u2265 14%<\/strong>.<\/p>\n<\/li>\n

  • \n

    En outre, il offre une excellente r\u00e9sistance aux chocs et d'excellentes propri\u00e9t\u00e9s m\u00e9caniques globales.<\/p>\n<\/li>\n

  • \n

    C'est pourquoi les ing\u00e9nieurs choisissent g\u00e9n\u00e9ralement ce mat\u00e9riau pour les ponts roulants de taille moyenne \u00e0 grande, en raison de ses performances \u00e9quilibr\u00e9es et de sa rentabilit\u00e9.<\/p>\n<\/li>\n<\/ul>\n

    2. 42CrMo (acier alli\u00e9)<\/strong><\/h3>\n

    Selon le GB\/T 3077<\/strong>Le 42CrMo est un acier alli\u00e9 de haute performance largement utilis\u00e9 dans les applications lourdes.<\/p>\n

      \n
    • \n

      Apr\u00e8s la trempe et le revenu, il atteint une temp\u00e9rature de r\u00e9sistance \u00e0 la traction de \u2265 980 MPa<\/strong> et un limite d'\u00e9lasticit\u00e9 de \u2265 850 MPa<\/strong>avec une r\u00e9sistance \u00e0 la fatigue et une t\u00e9nacit\u00e9 \u00e9lev\u00e9es.<\/p>\n<\/li>\n

    • \n

      C'est pourquoi les fabricants choisissent souvent le 42CrMo pour roues motrices<\/strong> ou des applications qui requi\u00e8rent des d\u00e9marrages\/arr\u00eats fr\u00e9quents<\/strong> et charges dynamiques \u00e9lev\u00e9es<\/strong>.<\/p>\n<\/li>\n<\/ul>\n

      3. 65Mn (acier \u00e0 ressort \u00e0 haute teneur en mangan\u00e8se)<\/strong><\/h3>\n

      En conformit\u00e9 avec GB\/T 1222<\/strong>Le 65Mn est un type d'acier \u00e0 ressort au carbone et au mangan\u00e8se qui offre les caract\u00e9ristiques suivantes excellente r\u00e9sistance \u00e0 l'usure<\/strong> et duret\u00e9 \u00e9lev\u00e9e (HRC 45-55)<\/strong>.<\/p>\n

        \n
      • \n

        Bien que sa r\u00e9sistance soit l\u00e9g\u00e8rement inf\u00e9rieure, il se comporte bien dans les domaines suivants forte usure, faible impact<\/strong> les environnements de travail.<\/p>\n<\/li>\n

      • \n

        Par cons\u00e9quent, les entreprises l'appliquent souvent \u00e0 des composants tels que les roues de convoyeurs ou les rouleaux.<\/p>\n<\/li>\n<\/ul>\n

        4. QT500-7 \/ QT600-3 (fonte ductile)<\/strong><\/h3>\n

        Telle que d\u00e9finie dans GB\/T 1348<\/strong>La fonte ductile, telle que QT500-7 ou QT600-3, offre une r\u00e9sistance \u00e0 l'usure plus \u00e9lev\u00e9e que la fonte ductile. r\u00e9sistance \u00e0 la traction de 500 \u00e0 600 MPa<\/strong> et un taux d'\u00e9longation de 7-10%<\/strong>.<\/p>\n

          \n
        • \n

          Ce mat\u00e9riel est rentable<\/strong> et facilit\u00e9 de traitement<\/strong>Bien que sa r\u00e9sistance \u00e0 l'usure soit inf\u00e9rieure \u00e0 celle de l'acier.<\/p>\n<\/li>\n

        • \n

          C'est pourquoi les ing\u00e9nieurs l'utilisent g\u00e9n\u00e9ralement pour grues l\u00e9g\u00e8res<\/strong> ou roues non motrices<\/strong> lorsque le co\u00fbt est une pr\u00e9occupation majeure.<\/p>\n<\/li>\n<\/ul>\n

          Roue de pont roulant M\u00e9thodes de traitement thermique optionnelles :<\/strong><\/h3>\n
          \n
          \n\n\n\n\n\n\n\n\n
          Traitement thermique<\/th>\nObjectif<\/th>\nMat\u00e9riaux appropri\u00e9s<\/th>\n<\/tr>\n<\/thead>\n
          Normalisation + Revenu<\/td>\nAm\u00e9liorer les performances m\u00e9caniques globales<\/td>\nZG430-640<\/td>\n<\/tr>\n
          Trempe + revenu<\/td>\nAugmenter la solidit\u00e9 et la r\u00e9sistance \u00e0 la fatigue<\/td>\n42CrMo, 65Mn<\/td>\n<\/tr>\n
          Durcissement superficiel<\/td>\nAm\u00e9liorer la r\u00e9sistance \u00e0 l'usure de la surface<\/td>\nZG430, 42CrMo<\/td>\n<\/tr>\n
          Trempe par induction<\/td>\nSouvent utilis\u00e9 pour les roues motrices (durcissement localis\u00e9)<\/td>\nZG430, 42CrMo<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

          Choix des mat\u00e9riaux recommand\u00e9s en fonction des conditions de travail :<\/strong><\/h3>\n
          \n
          \n\n\n\n\n\n\n\n\n
          Conditions de travail<\/th>\nMat\u00e9riau recommand\u00e9<\/th>\n<\/tr>\n<\/thead>\n
          Grue polyvalente \u00e0 charge moyenne<\/td>\nZG430-640<\/td>\n<\/tr>\n
          Charge lourde, utilisation fr\u00e9quente<\/td>\n42CrMo<\/td>\n<\/tr>\n
          Forte usure, faible impact<\/td>\n65Mn<\/td>\n<\/tr>\n
          \u00c9quipements l\u00e9gers, sensibles aux co\u00fbts<\/td>\nQT500-7 (fonte ductile)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

          Le mat\u00e9riau de la roue du pont roulant est g\u00e9n\u00e9ralement choisi en fonction de l'environnement d'utilisation (charge, fr\u00e9quence, usure). Les \u00e9l\u00e9ments suivants...<\/p>","protected":false},"author":1,"featured_media":6720,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"categories":[1,53],"tags":[759,764,753,643,757,765,762,761,763,758,752],"class_list":["post-8304","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-company_news","category-industry_news","tag-active-wheel-set","tag-angle-box-type-wheel-sets","tag-bridge-crane-wheel","tag-crane-accessories","tag-crane-wheel","tag-crane-wheel-assembly","tag-crane-wheels-manufacturer","tag-driven-wheel-group","tag-drs-wheel-blocks","tag-forged-wheels","tag-overhead-crane-wheel"],"yoast_head":"\nOverhead 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