{"id":18824,"date":"2021-05-26T16:10:36","date_gmt":"2021-05-26T16:10:36","guid":{"rendered":"https:\/\/moldblade.com\/moulage-par-injection-de-plastique-defauts-possibles-causes-et-solutions\/"},"modified":"2021-11-15T10:07:44","modified_gmt":"2021-11-15T10:07:44","slug":"moulage-par-injection-de-plastique-defauts-possibles-causes-et-solutions","status":"publish","type":"post","link":"https:\/\/moldblade.com\/fr\/moulage-par-injection-de-plastique-defauts-possibles-causes-et-solutions\/","title":{"rendered":"Moulage par Injection de Plastique : d\u00e9fauts possibles, causes et solutions"},"content":{"rendered":"\n
\"\"<\/figure><\/div>\n\n

probl\u00e8me de points de br\u00fblure sur la partie inject\u00e9e.<\/strong><\/h2>\n\n

Les causes possibles peuvent \u00eatre : \n \n<\/strong><\/p>\n\n

  • – Fuites de gaz bouch\u00e9es.<\/li>
  • – Vitesse d’injection trop \u00e9lev\u00e9e.<\/li>
  • – La temp\u00e9rature du mat\u00e9riau est trop \u00e9lev\u00e9e.<\/li><\/ul>\n

    Solutions :<\/strong><\/p>\n\n

    • – Nettoyer les fuites de gaz.<\/li>
    • – R\u00e9duire la vitesse d’injection.\t<\/li>
    • – R\u00e9duire la temp\u00e9rature du mat\u00e9riau.<\/li><\/ul>\n

      Probl\u00e8me de bavures spontan\u00e9es dans les zones de montage.<\/strong><\/h2>\n\n

      Les causes possibles peuvent \u00eatre : \n \n<\/strong><\/p>\n\n

      • – Corps \u00e9tranger dans le plan de joint.<\/li>
      • – Sur injection de la pi\u00e8ce.<\/li>
      • – La temp\u00e9rature du mat\u00e9riau est trop \u00e9lev\u00e9e.<\/li>
      • – La machine n’a pas une force de fermeture suffisante pour compenser la pression d’injection. \n \n<\/li>
      • – Contr\u00f4le de la temp\u00e9rature de refroidissement du moule<\/li><\/ul>\n

        Solutions :<\/strong><\/p>\n\n

        • – Le contr\u00f4le des zones de r\u00e9glage permet de v\u00e9rifier qu’aucun \u00e9l\u00e9ment \u00e9tranger n’a \u00e9t\u00e9 introduit ou qu’il n’y a pas de r\u00e9sidus de plastique provenant d’injections pr\u00e9c\u00e9dentes.<\/li>
        • – V\u00e9rification des surfaces de la cloison pour d\u00e9tecter d’\u00e9ventuels dommages.<\/li>
        • – V\u00e9rifiez le processus d’injection : vitesses, temp\u00e9ratures, charge et pressions.<\/li>
        • – R\u00e9gulation de la force de fermeture de la machine.<\/li>
        • – V\u00e9rifier le refroidissement du moule.<\/li><\/ul>\n

          Des bavures continues dans les zones de r\u00e9glage.<\/strong><\/h2>\n\n

          Les causes possibles peuvent \u00eatre : \n \n<\/strong><\/p>\n\n

          • – Usure des zones d’ajustement.<\/li>
          • – Corps \u00e9trangers ou r\u00e9sidus de plastique d\u00e9pos\u00e9s sur les joints.<\/li>
          • – Mandrins de machine d\u00e9r\u00e9gl\u00e9s.<\/li>
          • – Param\u00e8tres d’injection d\u00e9r\u00e9gl\u00e9s : vitesses, charge et pressions.<\/li>
          • – La temp\u00e9rature du mat\u00e9riau est trop \u00e9lev\u00e9e.<\/li>
          • – Les solutions : <\/li><\/ul>\n

            Solutions :<\/strong><\/p>\n\n

            • – R\u00e9parez les joints et r\u00e9ajustez le moule d’injection.<\/li>
            • – Retirez les corps \u00e9trangers ou les d\u00e9bris de plastique dans la zone de serrage.<\/li>
            • – R\u00e9parez les joints et r\u00e9ajustez le moule d’injection.<\/li>
            • – Revue du processus d’injection : vitesses, temp\u00e9ratures, charges et pressions.<\/li>
            • – R\u00e9gulation de la force de fermeture de la machine.<\/li>
            • – V\u00e9rifier le refroidissement du moule.<\/li><\/ul>\n
              \"Moldblade<\/figure>\n

              Ligne de liaison dans un endroit non d\u00e9sir\u00e9.<\/strong><\/h2>\n\n

              Les causes possibles peuvent \u00eatre : \n \n<\/strong><\/p>\n\n

              • – Temp\u00e9rature du plastique trop basse.<\/li>
              • – La section des entr\u00e9es de mat\u00e9riaux est diff\u00e9rente.<\/li>
              • – Points d’injection obstru\u00e9s.<\/li>
              • – Chauffage non uniforme du canal chaud.<\/li>
              • – Buses \u00e0 diff\u00e9rentes temp\u00e9ratures.<\/li>
              • – In\u00e9galit\u00e9 de l’\u00e9vacuation des gaz en raison de fuites.<\/li>
              • – Manque d’uniformit\u00e9 dans le refroidissement.<\/li><\/ul>\n

                Solutions :<\/strong><\/p>\n\n

                • – V\u00e9rification des temp\u00e9ratures d’injection.<\/li>
                • – V\u00e9rifiez l’\u00e9tat des buses d’injection.<\/li>
                • – V\u00e9rifiez le fonctionnement des obturateurs.<\/li>
                • – V\u00e9rifiez les r\u00e9sistances des blocs chauds.<\/li>
                • – V\u00e9rifiez les fuites de gaz.<\/li>
                • – V\u00e9rifiez le refroidissement du moule.<\/li><\/ul>\n
                  \"Moldblade<\/figure><\/div>\n","protected":false},"excerpt":{"rendered":"

                  probl\u00e8me de points de br\u00fblure sur la partie inject\u00e9e. <\/p>\n","protected":false},"author":2,"featured_media":18818,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[],"tags":[],"class_list":["post-18824","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"\nMoulage par Injection de Plastique : d\u00e9fauts possibles, causes et solutions - Moldblade<\/title>\n<meta name=\"description\" content=\"probl\u00e8me de points de br\u00fblure sur la partie inject\u00e9e. 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