{"id":2211,"date":"2020-06-09T03:49:58","date_gmt":"2020-06-09T03:49:58","guid":{"rendered":"http:\/\/alalloycasting.com\/?p=2211"},"modified":"2020-09-04T09:41:02","modified_gmt":"2020-09-04T09:41:02","slug":"aluminum-alloy-casting-defects","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-alloy-casting-defects\/","title":{"rendered":"D\u00e9fauts de coul\u00e9e des alliages d'aluminium"},"content":{"rendered":"

Lors du moulage d'alliages d'aluminium, l'apparition de divers d\u00e9fauts dus \u00e0 des erreurs de moulage est in\u00e9vitable, et ces d\u00e9fauts doivent \u00eatre trait\u00e9s sans d\u00e9lai. Cependant, le choix d'une solution adapt\u00e9e permet d'\u00e9viter ces d\u00e9fauts dans une certaine mesure. Que faut-il faire pour \u00e9viter les d\u00e9fauts de moulage des alliages d'aluminium ?<\/p>\n

D\u00e9fauts de coul\u00e9e des alliages d'aluminium<\/h2>\n

Stomates. Si vous souhaitez \u00e9viter les probl\u00e8mes li\u00e9s aux stomates, vous devez vous assurer qu'aucun air ne soit emprisonn\u00e9 lors de la coul\u00e9e. De plus, le m\u00e9tal en fusion \u00e0 base d'alliage d'aluminium doit d'abord \u00eatre filtr\u00e9 pour \u00e9liminer les impuret\u00e9s et les bulles avant d'\u00eatre introduit dans la cavit\u00e9 de moulage.<\/p>\n

Micro-trou. Lorsque l'alliage est \u00e0 l'\u00e9tat liquide, il faut \u00e9liminer tout le gaz qu'il contient. Parall\u00e8lement, il est n\u00e9cessaire d'acc\u00e9l\u00e9rer la vitesse de solidification afin d'emp\u00eacher le gaz de s'\u00e9chapper de l'alliage. AdTech syst\u00e8me de d\u00e9gazage en ligne<\/a> et Bo\u00eetier de filtre CFF<\/a> sont install\u00e9s entre le four de fusion de l'aluminium et la plate-forme de coul\u00e9e. Leur fonction principale est d'\u00e9liminer les gaz et autres impuret\u00e9s pr\u00e9sents dans l'aluminium en fusion.<\/p>\n

\"D\u00e9fauts<\/p>\n

Retrait. Il est n\u00e9cessaire de concevoir un syst\u00e8me de coul\u00e9e adapt\u00e9 et de d\u00e9terminer l'emplacement pr\u00e9cis de la coul\u00e9e. Il faut \u00e9galement veiller \u00e0 ce que le liquide se solidifie de mani\u00e8re ordonn\u00e9e, afin de r\u00e9duire le risque d'apparition de trous de retrait.<\/p>\n

Espace libre. Afin de garantir le bon d\u00e9roulement de la solidification et la mise en \u0153uvre des mesures compl\u00e9mentaires associ\u00e9es, le mat\u00e9riau du four doit \u00eatre aussi propre que possible, et il convient de placer un peu de fer froid dans la zone d'espace libre.<\/p>\n

Fissures. Pour \u00e9viter l'apparition de fissures, il est n\u00e9cessaire de s'assurer que la s\u00e9quence de solidification est correcte. Parall\u00e8lement, afin de r\u00e9duire les contraintes internes, il convient de choisir une temp\u00e9rature de coul\u00e9e appropri\u00e9e.<\/p>\n

Voici comment \u00e9viter les d\u00e9fauts dans la coul\u00e9e d'alliages d'aluminium. Si vous souhaitez \u00e9viter d'\u00eatre confront\u00e9 \u00e0 ce type de d\u00e9fauts, vous devez ma\u00eetriser la bonne m\u00e9thode de coul\u00e9e. De plus, les acheteurs doivent veiller tout particuli\u00e8rement, lors de l'achat de pi\u00e8ces en alliage d'aluminium, \u00e0 v\u00e9rifier si celles-ci pr\u00e9sentent l'un des d\u00e9fauts mentionn\u00e9s ci-dessus. Et si n\u00e9cessaire, ils doivent les renvoyer \u00e0 l'usine dans les meilleurs d\u00e9lais pour qu'elles soient r\u00e9par\u00e9es.<\/p>","protected":false},"excerpt":{"rendered":"

In the process of aluminum alloy casting, it is inevitable that various defects will appear due to improper casting, and the defects must be dealt…<\/p>","protected":false},"author":1,"featured_media":4535,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[323,324,325],"class_list":["post-2211","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminum-alloy-casting-defects","tag-degassing-system","tag-filtering-unit"],"yoast_head":"\nAluminum Alloy Casting Defects, Degassing System,Filtering Unit<\/title>\n<meta name=\"description\" content=\"Aluminum alloy casting defects will appear due to improper casting, and the defects must be dealt with in a timely manner.\" \/>\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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