{"id":2911,"date":"2020-07-18T03:49:50","date_gmt":"2020-07-18T03:49:50","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=2911"},"modified":"2020-10-14T08:35:07","modified_gmt":"2020-10-14T08:35:07","slug":"aluminum-strontium-alloy","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/aluminum-strontium-alloy\/","title":{"rendered":"Alliage d'aluminium et de strontium"},"content":{"rendered":"

L'alliage d'aluminium et de strontium sert de mati\u00e8re de coul\u00e9e en fusion dans l'alliage. On peut dire qu'il s'agit d'un modificateur, d'un affineur et d'un additif pour les alliages d'aluminium, capable de modifier la composition de l'alliage et d'exercer un effet de modification des propri\u00e9t\u00e9s d'application.<\/p>\n

Teneur en alliage Al-Sr<\/h2>\n

Al-Sr5 : teneur 4,0-6,01 TP3TSr<\/p>\n

Teneur en impuret\u00e9s : fer 0,16% ; silicium 0,20%<\/p>\n

Al-Sr10 : teneur en Sr comprise entre 9,0 et 11,0<\/p>\n

Teneur en impuret\u00e9s : fer 0,20% ; silicium 0,20%<\/p>\n

Quel est le r\u00f4le de l'alliage d'aluminium et de strontium ?<\/h2>\n

Alliages d'aluminium et de strontium<\/a> Il permet d'affiner efficacement le silicium eutectique et le silicium primaire pr\u00e9sents dans l'alliage, et d'am\u00e9liorer ainsi ses propri\u00e9t\u00e9s m\u00e9caniques. Cette modification pr\u00e9sente un effet durable, et l'alliage offre une meilleure stabilit\u00e9 \u00e0 la refusion ainsi qu'une meilleure r\u00e9sistance \u00e0 la d\u00e9gradation. La quantit\u00e9 de strontium ajout\u00e9e est g\u00e9n\u00e9ralement comprise entre 0,02 et 0,041 TP3T. Par exemple, la teneur en strontium de l\u2019agent de scellement utilis\u00e9 dans l\u2019alliage d\u2019aluminium-strontium est de 10%, et le taux d\u2019ajout se situe entre 0,2 et 0,4%, ce qui permet de garantir efficacement l\u2019effet de modification. En r\u00e8gle g\u00e9n\u00e9rale, l\u2019alliage Al-Sr est ajout\u00e9 \u00e0 l\u2019alliage ; l\u2019alliage d\u2019aluminium-strontium est g\u00e9n\u00e9ralement pr\u00e9chauff\u00e9 \u00e0 une temp\u00e9rature comprise entre 200 et 300 degr\u00e9s, puis les autres composants correspondants sont ajout\u00e9s proportionnellement apr\u00e8s avoir retir\u00e9 les autres composants correspondants.<\/p>\n

Le strontium (Sr) est un modificateur \u00e0 action prolong\u00e9e ; son effet de modification est \u00e9quivalent \u00e0 celui du sodium, sans pr\u00e9senter les inconv\u00e9nients de la modification au sodium, ce qui en fait un modificateur prometteur. La Grande-Bretagne, les Pays-Bas et d\u2019autres pays ont commenc\u00e9 \u00e0 promouvoir l\u2019utilisation des m\u00e9thodes de m\u00e9tamorphisme au strontium (Sr) au d\u00e9but des ann\u00e9es 1980. \u00c0 l'heure actuelle, de nombreuses recherches ont \u00e9t\u00e9 men\u00e9es sur la d\u00e9gradation du strontium, tant en Chine qu'\u00e0 l'\u00e9tranger. L'utilisation du strontium (Sr) en remplacement du sodium ou des sels de sodium prend \u00e9galement de l'ampleur en Chine.<\/p>\n

\"Alliage<\/p>\n

Avantages du modificateur \u00e0 base de strontium<\/h2>\n
    \n
  1. Un effet modificateur satisfaisant et une longue dur\u00e9e de validit\u00e9.<\/li>\n
  2. Le proc\u00e9d\u00e9 de modification ne d\u00e9gage pas de fum\u00e9e, est non toxique, ne pollue pas l'environnement, ne provoque pas de corrosion des \u00e9quipements et des outils, ne nuit pas \u00e0 la sant\u00e9 et est facile \u00e0 mettre en \u0153uvre.<\/li>\n
  3. Il est facile d'obtenir des propri\u00e9t\u00e9s m\u00e9caniques satisfaisantes.<\/li>\n
  4. L'effet de la refusion et de la modification est important.<\/li>\n
  5. Le rendement de coul\u00e9e est \u00e9lev\u00e9 et le b\u00e9n\u00e9fice \u00e9conomique global est remarquable.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"

    Aluminum strontium alloy acts as a molten casting in the alloy. It can be said that it is a modifier, refiner and additive for aluminum…<\/p>","protected":false},"author":1,"featured_media":5578,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[138],"tags":[1469],"class_list":["post-2911","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo","tag-aluminum-strontium-alloy"],"yoast_head":"\nAluminum Strontium Alloy,Strontium Modifier-sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"Aluminum strontium alloys can effectively refine the eutectic silicon and primary silicon in the alloy, improve the mechanical properties.\" \/>\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.alalloycasting.com\/fr\/aluminum-strontium-alloy\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta 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