{"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":"selezione-del-materiale-per-le-ruote-dei-carriponte","status":"publish","type":"post","link":"https:\/\/www.hnhlcranes.com\/it\/selezione-del-materiale-per-le-ruote-dei-carriponte\/","title":{"rendered":"Selezione del materiale della ruota del carroponte"},"content":{"rendered":"

Il materiale della ruota del carroponte viene solitamente selezionato in base all'ambiente di utilizzo (carico, frequenza, usura). Di seguito sono riportati i principali materiali comunemente utilizzati nell'industria e le loro caratteristiche:<\/p>\n

1. ZG430-640 (acciaio fuso)\"\"<\/a> \"\"<\/a><\/strong><\/h3>\n

Secondo lo standard cinese GB\/T 11352-2009<\/strong> (Acciaio fuso strutturale al carbonio), ZG430-640 \u00e8 uno dei materiali pi\u00f9 comunemente utilizzati per le ruote delle gru.<\/p>\n

    \n
  • \n

    Fornisce un resistenza alla trazione \u2265 640 MPa<\/strong>, a resistenza allo snervamento \u2265 430 MPa<\/strong>e un allungamento di \u2265 14%<\/strong>.<\/p>\n<\/li>\n

  • \n

    Inoltre, offre un'eccellente resistenza agli urti e propriet\u00e0 meccaniche complessive.<\/p>\n<\/li>\n

  • \n

    Per questo motivo, gli ingegneri scelgono solitamente questo materiale per i carriponte di medie e grandi dimensioni, grazie alle sue prestazioni equilibrate e all'efficienza dei costi.<\/p>\n<\/li>\n<\/ul>\n

    2. 42CrMo (acciaio legato)<\/strong><\/h3>\n

    Secondo GB\/T 3077<\/strong>Il 42CrMo \u00e8 un acciaio legato ad alte prestazioni ampiamente utilizzato in applicazioni pesanti.<\/p>\n

      \n
    • \n

      Dopo la tempra e il rinvenimento, raggiunge un resistenza alla trazione \u2265 980 MPa<\/strong> e un resistenza allo snervamento di \u2265 850 MPa<\/strong>con elevata resistenza alla fatica e tenacit\u00e0.<\/p>\n<\/li>\n

    • \n

      Di conseguenza, i produttori spesso scelgono 42CrMo per ruote motrici<\/strong> o applicazioni che richiedono Avviamenti\/arresti frequenti<\/strong> e carichi dinamici elevati<\/strong>.<\/p>\n<\/li>\n<\/ul>\n

      3. 65Mn (acciaio per molle ad alto tenore di manganese)<\/strong><\/h3>\n

      In conformit\u00e0 con GB\/T 1222<\/strong>Il 65Mn \u00e8 un tipo di acciaio per molle al carbonio-manganese che offre eccellente resistenza all'usura<\/strong> e elevata durezza (HRC 45-55)<\/strong>.<\/p>\n

        \n
      • \n

        Anche se la sua tenacit\u00e0 \u00e8 leggermente inferiore, si comporta bene in ad alta usura e a basso impatto<\/strong> ambienti di lavoro.<\/p>\n<\/li>\n

      • \n

        Di conseguenza, le aziende lo applicano spesso a componenti come le ruote dei trasportatori o i rulli di rinvio.<\/p>\n<\/li>\n<\/ul>\n

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

        Come definito in GB\/T 1348<\/strong>, la ghisa duttile, come la QT500-7 o la QT600-3, offre un'elevata resistenza alla corrosione. resistenza alla trazione di 500-600 MPa<\/strong> e un tasso di allungamento di 7-10%<\/strong>.<\/p>\n

          \n
        • \n

          Questo materiale \u00e8 efficace dal punto di vista dei costi<\/strong> e facile da elaborare<\/strong>Anche se la sua resistenza all'usura \u00e8 inferiore a quella dell'acciaio.<\/p>\n<\/li>\n

        • \n

          Pertanto, gli ingegneri lo utilizzano solitamente per gru per impieghi leggeri<\/strong> o ruote non motrici<\/strong> dove il costo \u00e8 una preoccupazione primaria.<\/p>\n<\/li>\n<\/ul>\n

          Ruota del carroponte Metodi di trattamento termico opzionali:<\/strong><\/h3>\n
          \n
          \n\n\n\n\n\n\n\n\n
          Trattamento termico<\/th>\nScopo<\/th>\nMateriali adatti<\/th>\n<\/tr>\n<\/thead>\n
          Normalizzazione + rinvenimento<\/td>\nPer migliorare le prestazioni meccaniche complessive<\/td>\nZG430-640<\/td>\n<\/tr>\n
          Tempra + rinvenimento<\/td>\nPer aumentare la forza e la resistenza alla fatica<\/td>\n42CrMo, 65Mn<\/td>\n<\/tr>\n
          Tempra superficiale<\/td>\nPer migliorare la resistenza all'usura superficiale<\/td>\nZG430, 42CrMo<\/td>\n<\/tr>\n
          Tempra a induzione<\/td>\nSpesso utilizzato per le ruote motrici (indurimento localizzato)<\/td>\nZG430, 42CrMo<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

          Selezione del materiale consigliato in base alle condizioni di lavoro:<\/strong><\/h3>\n
          \n
          \n\n\n\n\n\n\n\n\n
          Condizioni di lavoro<\/th>\nMateriale consigliato<\/th>\n<\/tr>\n<\/thead>\n
          Gru per impieghi generali a medio carico<\/td>\nZG430-640<\/td>\n<\/tr>\n
          Carico pesante, funzionamento frequente<\/td>\n42CrMo<\/td>\n<\/tr>\n
          Elevata usura, basso impatto<\/td>\n65Mn<\/td>\n<\/tr>\n
          Apparecchiature leggere, sensibili ai costi<\/td>\nQT500-7 (ferro duttile)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

          Il materiale della ruota del carroponte viene solitamente selezionato in base all'ambiente di utilizzo (carico, frequenza, usura). I seguenti...<\/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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