{"id":1311,"date":"2017-03-31T17:21:13","date_gmt":"2017-03-31T09:21:13","guid":{"rendered":"https:\/\/www.symachining.com\/?p=877"},"modified":"2017-03-31T17:21:13","modified_gmt":"2017-03-31T09:21:13","slug":"tips-aluminum-welding","status":"publish","type":"post","link":"https:\/\/www.symachining.com\/fr\/tips-aluminum-welding\/","title":{"rendered":"Conseils pour le soudage de l'aluminium"},"content":{"rendered":"

Il ne fait aucun doute que l'utilisation de l'aluminium augmente dans l'industrie de la fabrication par soudage. Les fabricants adoptent souvent ce mat\u00e9riau, soit par l'innovation, soit par la pression exerc\u00e9e par les utilisateurs finaux. R\u00e9cemment, des probl\u00e8mes de soudage de l'aluminium sont apparus en cours de fonctionnement (comme le montre l'image).<\/p>\n

\"Aluminum<\/a><\/p>\n

Il nous avertit que nous devrions accorder plus d'attention \u00e0 la pr\u00e9vention des d\u00e9fauts de soudage de l'aluminium. Les deux principaux d\u00e9fauts du soudage de l'aluminium et la mani\u00e8re d'en pr\u00e9venir les composants sont d\u00e9crits ci-dessous.<\/p>\n

Porosit\u00e9 : <\/strong>La porosit\u00e9 est le r\u00e9sultat de l'emprisonnement d'hydrog\u00e8ne dans l'aluminium en cours de solidification pendant le soudage, ce qui laisse des vides dans la soudure termin\u00e9e. La porosit\u00e9 peut \u00eatre divis\u00e9e en trous denses, trous d'aiguille, etc. L'hydrog\u00e8ne peut provenir de tous les aspects de la zone de soudage, tels que l'humidit\u00e9 de l'atmosph\u00e8re de la colonne d'arc, l'humidit\u00e9 absorb\u00e9e par le mat\u00e9riau de soudage et le film d'oxydation de la surface du m\u00e9tal de base. La porosit\u00e9 a une grande influence sur les performances de la soudure. Elle r\u00e9duit non seulement le travail effectif de la section transversale de la soudure pour d\u00e9grader les performances m\u00e9caniques de la soudure, mais elle d\u00e9truit \u00e9galement la densit\u00e9 du joint de soudure, ce qui provoque facilement des fuites. En raison de la formation d'une concentration de contraintes sur le bord du trou, le plastique du joint soud\u00e9 diminue. Par cons\u00e9quent, pour les soudures importantes, le trou d'air doit \u00eatre strictement contr\u00f4l\u00e9. Il existe des raisons sp\u00e9cifiques aux causes de la porosit\u00e9.<\/p>\n

    \n
  1. La puret\u00e9 du gaz argon est faible, il y a trop d'impuret\u00e9s ou la tuyauterie de gaz argon contient de l'eau et la tuyauterie de gaz argon fuit.<\/li>\n
  2. Le fil de soudage ou le m\u00e9tal de base \u00e0 proximit\u00e9 de la soudure n'est pas propre avant le soudage, ou est contamin\u00e9 par des salet\u00e9s, de l'humidit\u00e9 apr\u00e8s le nettoyage, etc.<\/li>\n
  3. Le soudage \u00e0 l'arc sous argon avec protection par gaz argon n'est pas qualifi\u00e9, l'arc est instable, l'arc est trop long, l'\u00e9lectrode de tungst\u00e8ne s'\u00e9tend sur une longue distance.<\/li>\n
  4. Mauvaise s\u00e9lection des param\u00e8tres de soudage, vitesse de soudage trop rapide ou trop lente.<\/li>\n
  5. l'environnement humide, la vitesse \u00e9lev\u00e9e du vent.<\/li>\n<\/ol>\n

    Pour ces raisons, il existe des mesures pr\u00e9ventives.<\/p>\n

      \n
    1. Assurer la puret\u00e9 du gaz de protection.<\/li>\n
    2. Veiller \u00e0 la propret\u00e9 du fil de soudure et de la rainure du m\u00e9tal de base.<\/li>\n
    3. S\u00e9lection correcte des param\u00e8tres de soudage.<\/li>\n
    4. Pr\u00e9chauffer avant de souder.<\/li>\n
    5. Veillez \u00e0 ce que l'environnement de travail soit sec et installez le dispositif brise-vent.<\/li>\n<\/ol>\n

      Craquement :<\/strong> Cette forme de fissure dans l'aluminium est g\u00e9n\u00e9ralement caus\u00e9e par une combinaison de faiblesses m\u00e9tallurgiques du m\u00e9tal soud\u00e9 lorsqu'il se solidifie avec une contrainte transversale appliqu\u00e9e \u00e0 travers la soudure. La fissuration est le d\u00e9faut de soudage le plus dangereux, elle affecte gravement les performances et la fiabilit\u00e9 de la structure de soudage, et elle est \u00e9galement une cause majeure de nombreux dommages \u00e0 la structure de soudage. Il y a des raisons sp\u00e9cifiques \u00e0 cela.<\/p>","protected":false},"excerpt":{"rendered":"

      Il ne fait aucun doute que l'utilisation de l'aluminium augmente dans l'industrie de la fabrication par soudage. Les fabricants adoptent souvent ce mat\u00e9riau, soit par l'innovation, soit par la pression exerc\u00e9e par les utilisateurs finaux. R\u00e9cemment, des probl\u00e8mes de soudage de l'aluminium sont apparus en cours d'op\u00e9ration (comme le montre l'image). Cela nous avertit que nous devrions pr\u00eater plus d'attention \u00e0 la [...]<\/p>","protected":false},"author":2,"featured_media":879,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[14],"tags":[11,15],"class_list":["post-1311","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-machining-industry","tag-china-precision-manufacturer","tag-machining-project"],"acf":[],"yoast_head":"\nTips of Aluminum Welding - SYM Precision Machining Manufacturer China<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.symachining.com\/fr\/tips-aluminum-welding\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tips of Aluminum Welding - SYM Precision Machining Manufacturer China\" \/>\n<meta property=\"og:description\" content=\"Without doubt, the use of aluminum is increasing within the welding fabrication industry. 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