{"id":6376,"date":"2020-11-12T09:00:16","date_gmt":"2020-11-12T09:00:16","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6376"},"modified":"2020-11-12T09:00:16","modified_gmt":"2020-11-12T09:00:16","slug":"online-purification","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/fr\/online-purification\/","title":{"rendered":"Online Purification"},"content":{"rendered":"<p>By improving the design of online purification equipment, the degree of contamination of the melt after purification is reduced. In addition, through the improvement of some production operation details, it is possible to ensure that the aluminum liquid is not contaminated to the greatest extent, to ensure the purity of the aluminum liquid, and finally achieve the goal of mass production of aluminum liquid and deep-purified aluminum rods.<\/p>\n<p>Theoretically speaking, the purity of aluminum alloy melt should reach a high level after refining in the furnace and on-line degassing and slagging. However, the actual results are often not ideal. One of the important reasons is that the aluminum liquid passes through the launder. , The slagging and gas suction conditions during the casting process. At this time, the aluminum melt is in an &#8220;unprotected&#8221; state, and the absorbed gas and the generated non-metallic inclusions are more likely to flow into the casting rod, forming &#8220;secondary pollution&#8221;. The longer the launder, the greater the probability and degree of secondary pollution.<\/p>\n<p>In view of the above problems, three measures can be taken when designing the online purification system:<\/p>\n<ul>\n<li>Shorten the length of the <a href=\"http:\/\/www.alalloycasting.com\/fr\/casting-launder-2\/\">launder runner<\/a>. Enter the mold from the casting water outlet, and the length of the launder shall not exceed 2m. When dealing with the drop of the launder, instead of using the method of excessive tilting, the method of overlapping two sets of launder is adopted to ensure the stability of the liquid level to the greatest possible extent and prevent the aluminum melt from rolling and slagging.<\/li>\n<li>The integrated design of the <a href=\"http:\/\/www.alalloycasting.com\/fr\/cff-filtration\/\">Filtration CFF<\/a> et <a href=\"http:\/\/www.alalloycasting.com\/fr\/degassing-system\/\">syst\u00e8me de d\u00e9gazage<\/a> optimise le processus de transfert et r\u00e9duit autant que possible la longueur du canal d'\u00e9coulement.<\/li>\n<li>The filter plate of the secondary filtration is directly placed on the crystallizer to ensure that the aluminum liquid is filtered directly into the casting, reducing the incidence of secondary pollution. When refining in the furnace, the amount of refining agent is sufficient to ensure the refining time and avoid refining dead ends. Strictly implement the baking system of the casting system. These measures will have a positive impact on purity control.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6377\" src=\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/11\/Online-Purification.jpg\" alt=\"Online Purification\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/11\/Online-Purification.jpg 500w, https:\/\/www.alalloycasting.com\/wp-content\/uploads\/2020\/11\/Online-Purification-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>In order to make aluminum rods with higher purity, there are several points to note:<\/p>\n<ul>\n<li>Lorsqu'on change de nuance d'alliage, vidanger l'aluminium en fusion pr\u00e9sent dans le dispositif de purification et le nettoyer.<\/li>\n<li>Le plateau \u00e0 coulisses doit \u00eatre cuit \u00e0 fond.<\/li>\n<li>When smelting in the furnace, use a covering agent to prevent air inhalation.<\/li>\n<li>Le plateau \u00e0 galettes doit \u00eatre install\u00e9 lors de la garde pr\u00e9c\u00e9dente et avoir \u00e9t\u00e9 enti\u00e8rement cuit.<\/li>\n<li>The production and maintenance of the runner mold plate adopts light-weight refractory insulation material, which has good air permeability, which is conducive to thorough drying and can also prevent air inhalation.<\/li>\n<li>Soufflez pour \u00e9liminer les impuret\u00e9s \u00e0 la surface du filtre avant de le charger, puis v\u00e9rifiez sa porosit\u00e9 aveugle.<\/li>\n<\/ul>\n<p>It is worth noting that this set of online purification equipment was put into use in an aluminum material factory in March and has been running steadily, with ideal degassing and slag removal effects. But after the rainy season, the purification effect is greatly affected. It can be seen that environmental factors are an important factor affecting the purity of the melt. Melt purification is not a problem that can be solved by advanced equipment alone. It requires comprehensive consideration and overall planning from production management, equipment maintenance, process specifications and other aspects to achieve a more ideal effect.<\/p>","protected":false},"excerpt":{"rendered":"<p>By improving the design of online purification equipment, the degree of contamination of the melt after purification is reduced. In addition, through the improvement of&hellip;<\/p>","protected":false},"author":1,"featured_media":6378,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-6376","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Online Purification with CFF Filtration and Degassing System<\/title>\n<meta name=\"description\" content=\"By improving the design of online purification equipment, the degree of contamination of the melt after purification is reduced.\" \/>\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\/online-purification\/\" \/>\n<meta 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