{"id":450,"date":"2020-04-03T09:46:48","date_gmt":"2020-04-03T09:46:48","guid":{"rendered":"http:\/\/alalloycasting.com\/?p=450"},"modified":"2020-08-25T10:01:45","modified_gmt":"2020-08-25T10:01:45","slug":"degassing-process","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/degassing-process\/","title":{"rendered":"Proc\u00e9d\u00e9 de d\u00e9gazage"},"content":{"rendered":"<p>Les alliages d\u2019aluminium constituent les mat\u00e9riaux de structure en m\u00e9taux non ferreux les plus utilis\u00e9s dans l\u2019industrie. Ils sont largement employ\u00e9s dans les secteurs de l\u2019aviation, de l\u2019a\u00e9rospatiale, de l\u2019automobile, de la construction m\u00e9canique, de la construction navale et de l\u2019industrie chimique. Avec le d\u00e9veloppement rapide de l\u2019\u00e9conomie industrielle, la demande en alliages d\u2019aluminium ne cesse d\u2019augmenter. Le processus de d\u00e9gazage est essentiel pour \u00e9liminer l'hydrog\u00e8ne dissous et les inclusions non m\u00e9talliques du m\u00e9tal en fusion avant la coul\u00e9e, afin d'obtenir une qualit\u00e9 optimale. L'hydrog\u00e8ne dissous dans le m\u00e9tal en fusion se diffuse dans les bulles ascendantes du gaz de d\u00e9gazage et est transport\u00e9 vers la surface du m\u00e9tal en fusion.<\/p>\n<h2>Proc\u00e9d\u00e9 de d\u00e9gazage<\/h2>\n<p>Flux de gaz de raffinage : r\u00e9servoir de stockage de gaz inerte \u2192 armoire de r\u00e9gulation du gaz du dispositif de d\u00e9gazage en ligne \u2192 buse \u00e0 rotor en graphite \u2192 bain d'alliage d'aluminium en fusion \u2192 traitement de purification et de d\u00e9gazage.<\/p>\n<p><a href=\"https:\/\/www.alalloycasting.com\/fr\/2020\/04\/17\/online-degassing-device\/\">D\u00e9gazage rotatif<\/a> Ce proc\u00e9d\u00e9 repose sur le principe de l'augmentation de la surface expos\u00e9e d'un gaz d'apport au contact du m\u00e9tal. Une surface plus importante augmente la vitesse de transfert du m\u00e9tal vers le gaz inerte. Plus la taille des bulles est petite pour un volume de gaz donn\u00e9, plus la surface expos\u00e9e est grande. Les bulles plus petites perturbent moins la surface de la masse fondue, ce qui r\u00e9duit l'absorption suppl\u00e9mentaire d'hydrog\u00e8ne provenant d'atmosph\u00e8res humides.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3544\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/04\/Degassing-Process.jpg\" alt=\"Proc\u00e9d\u00e9 de d\u00e9gazage\" width=\"400\" height=\"320\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/04\/Degassing-Process.jpg 400w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/04\/Degassing-Process-300x240.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/p>\n<p>Principe de fonctionnement : A <a href=\"https:\/\/www.alalloycasting.com\/fr\/degassing-unit\/\">dispositif de d\u00e9gazage<\/a> est plac\u00e9 entre le four de maintien et la machine de coul\u00e9e. Dans la cuve de d\u00e9gazage, l\u2019azote inject\u00e9 dans le bain d\u2019alliage d\u2019aluminium est fragment\u00e9 par un rotor en graphite en rotation, formant ainsi un grand nombre de bulles diffus\u00e9es, ce qui permet un contact complet entre le bain d\u2019alliage d\u2019aluminium et l\u2019azote \u00e0 l\u2019int\u00e9rieur de la cuve. Selon le principe de la diff\u00e9rence de pression et de l\u2019adsorption en surface, les bulles absorbent l\u2019hydrog\u00e8ne pr\u00e9sent dans le bain fondu et adsorbent les scories oxyd\u00e9es (les plus grosses par collision, les plus petites par interception radiale). Une \u00e9cume se forme \u00e0 la surface du bain fondu. Le bain d\u2019alliage d\u2019aluminium s\u2019\u00e9coule depuis la sortie du dispositif de d\u00e9gazage (situ\u00e9e dans la partie inf\u00e9rieure de l\u2019\u00e9cume) vers la machine de coul\u00e9e. Le bain d\u2019alliage d\u2019aluminium p\u00e9n\u00e8tre en continu dans le dispositif de d\u00e9gazage, et l\u2019azote y est insuffl\u00e9 en continu. Gr\u00e2ce au processus de d\u00e9gazage, l\u2019objectif de purification du bain d\u2019alliage d\u2019aluminium est atteint.<\/p>\n<p><iframe loading=\"lazy\" title=\"\u00c9quipement de d\u00e9gazage destin\u00e9 \u00e0 l&#039;aluminium fondu\" width=\"843\" height=\"474\" src=\"https:\/\/www.youtube.com\/embed\/yNmGVsDHi_E?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>","protected":false},"excerpt":{"rendered":"<p>Aluminum alloys are the most widely used non-ferrous metal structural materials in the industry. And they have been widely used in aviation, aerospace, automobile, machinery&hellip;<\/p>","protected":false},"author":1,"featured_media":3544,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18,138],"tags":[106,2710,2713,2716,2721,2715,2717,2714,2731,2732,2709,2722,2725,2724,2723,2730,2726,2712,2711,2701,2700,2702,2707,2703,2706,2704,2708,2705,2720,2718,2736,2733,2734,2735,2737,2719,2729,2728,2727],"class_list":["post-450","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-degassing-unit","category-seo","tag-degassing-process","tag-degassing-process-alcom-aluminum-malaysia","tag-degassing-process-aluminium-malaysia","tag-degassing-process-aluminium-malaysia-berhad","tag-degassing-process-aluminium-malaysia-company","tag-degassing-process-aluminium-malaysia-price","tag-degassing-process-aluminium-malaysia-product","tag-degassing-process-aluminium-malaysia-supplier","tag-degassing-process-aluminium-philippine","tag-degassing-process-aluminium-supplier-philippine","tag-degassing-process-aluminum-malaysia","tag-degassing-process-aluminum-philippines","tag-degassing-process-aluminum-philippines-location","tag-degassing-process-aluminum-philippines-news","tag-degassing-process-aluminum-philippines-price","tag-degassing-process-anodized-aluminum-philippines","tag-degassing-process-brothers-aluminum-philippines","tag-degassing-process-kamco-aluminum-malaysia","tag-degassing-process-lb-aluminum-malaysia","tag-degassing-process-malaysia-aluminium-scrap","tag-degassing-process-malaysia-aluminium-smelter","tag-degassing-process-malaysia-aluminum","tag-degassing-process-malaysia-aluminum-alloy","tag-degassing-process-malaysia-aluminum-company","tag-degassing-process-malaysia-aluminum-foil","tag-degassing-process-malaysia-aluminum-ingot","tag-degassing-process-malaysia-aluminum-manufacturer","tag-degassing-process-malaysia-aluminum-smelter","tag-degassing-process-neata-aluminium-malaysia","tag-degassing-process-pa-aluminium-malaysia","tag-degassing-process-philippines-aluminium","tag-degassing-process-philippines-aluminum","tag-degassing-process-philippines-aluminum-supplier","tag-degassing-process-philippines-sheet-aluminum","tag-degassing-process-philippines-supplier-aluminium","tag-degassing-process-pmb-aluminium-malaysia","tag-degassing-process-reynolds-aluminum-philippines","tag-degassing-process-t-slot-aluminum-philippines","tag-degassing-process-unicom-aluminum-philippines"],"yoast_head":"<!-- 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