{"id":7314,"date":"2020-12-30T08:59:49","date_gmt":"2020-12-30T08:59:49","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=7314"},"modified":"2020-12-31T08:52:20","modified_gmt":"2020-12-31T08:52:20","slug":"liquid-aluminum-degassing","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/liquid-aluminum-degassing\/","title":{"rendered":"Liquid Aluminum Degassing"},"content":{"rendered":"<p>As the demand for high-quality aluminum products increases, especially in the aerospace industry, the need to reduce inclusions in molded products has also increased. A popular degassing method involves introducing nitrogen gas into liquid aluminum. Because nitrogen is used as the refining medium, it will not pollute the environment. Hydrogen is attracted by nitrogen bubbles, then absorbed by aluminum and released to the surface.<\/p>\n<p>Aluminum and aluminum alloy melts contain large amounts of hydrogen, metal, and non-metallic inclusions. If the above harmful substances cannot be removed in time before casting, casting defects such as pores, inclusions and looseness will be formed inside and inside the casting, which will seriously affect the physical, chemical, mechanical and deep processing properties of the casting, and a large amount of waste products.<\/p>\n<p>The liquid aluminum <a href=\"http:\/\/www.alalloycasting.com\/fr\/degassing-device\/\">dispositif de d\u00e9gazage<\/a> for casting can greatly improve the quality and output of aluminum products, thereby increasing the profitability of aluminum melting and casting plants.<\/p>\n<p><strong>Rotary Degassing Device<\/strong><\/p>\n<ul>\n<li>La turbine rotative agit en augmentant la surface de contact du gaz inerte introduit dans le m\u00e9tal.<\/li>\n<li>Les bulles d'azote plus petites g\u00e9n\u00e9r\u00e9es par le proc\u00e9d\u00e9 \u00e0 turbine pr\u00e9sentent une surface totale plus importante et captent davantage d'hydrog\u00e8ne.<\/li>\n<li>De plus, les perturbations de surface moins importantes provoqu\u00e9es par les bulles plus petites permettent de limiter la r\u00e9absorption d'hydrog\u00e8ne dans le m\u00e9tal \u00e0 partir de l'humidit\u00e9 atmosph\u00e9rique.<\/li>\n<li>The aluminum degassing process in the casting process is to remove inert gases (argon, nitrogen) through the rotating shaft and rotor.<\/li>\n<li>The energy of the rotating shaft results in the formation of a large number of small bubbles, thereby providing a very high surface area to volume ratio.<\/li>\n<li>The large surface area promotes the rapid and effective diffusion of hydrogen into the bubbles, so that the hydrogen activity in the liquid and gas phases is equal.<\/li>\n<li>Par rapport au d\u00e9gazage par flux, le d\u00e9gazeur rotatif permet d'\u00e9liminer l'hydrog\u00e8ne de mani\u00e8re plus efficace.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>As the demand for high-quality aluminum products increases, especially in the aerospace industry, the need to reduce inclusions in molded products has also increased. A&hellip;<\/p>","protected":false},"author":1,"featured_media":7315,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[4294,4293,154,4291,4292,4295,4299,4297,4298,4296,4347,4300,1706],"class_list":["post-7314","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminium-degass","tag-aluminum-degassing-equipment","tag-aluminum-degassing-process","tag-aluminum-degassing-system","tag-aluminum-degassing-units","tag-degassing-machine","tag-degassing-machine-buy","tag-degassing-machine-coimbatore","tag-degassing-machine-parts","tag-degassing-machine-pune","tag-degassing-with-nitrogen","tag-nitrogen-degassing-machine","tag-rotary-degassing-machine"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Liquid Aluminum Degassing, Rotary Degassing 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