\u0625\u0632\u0627\u0644\u0629 \u0627\u0644\u063a\u0627\u0632\u0627\u062a \u0648\u0627\u0644\u062a\u0643\u0631\u064a\u0631<\/a> of aluminum should be less than 0.2mL\/100g aluminum. The maximum temperature of the melt during smelting is 800\u2103, preferably not more than 780\u2103.<\/p>\nAfter reaching a certain temperature, the aluminum melt is transferred to the ladle for modification and purification treatment, Al-Sr modifier is added for modification treatment, and a grain refiner is added to refine the grain. Degassing with Ar\u00a0gas and N2 gas, the principle is that gas and N2 gas pass through the rotating graphite tube and porous graphite rotor to form many small bubbles. The gas in the melt enters the bubbles (balance principle) and floats up together with insoluble impurities, and makes the deterioration uniform. Perform chemical analysis and gas content analysis on the degassed aluminum melt.<\/p>","protected":false},"excerpt":{"rendered":"
During casting, the molten metal contains a large amount of gas and solidifies, forming round holes with smooth inner surfaces, that is, pores in the ingot. The main reasons are: the raw materials used are damp, and the stove and tools are not completely dried. The smelting temperature is high, the coverage is poor, the […]<\/p>\n","protected":false},"author":1,"featured_media":3504,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[7639,7641,7637,7638,7632,7640,7642,7613,7618,7625,7629,7626,7630,7628,7627,7631,7620,7621,7622,7619,7624,7623,7633,7635,7643,7644,7634,7614,7616,7636,7615,7617],"class_list":["post-3502","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-degassing-refining-of-alumina-partners-of-jamaica","tag-degassing-refining-of-aluminium-companies-in-jamaica","tag-degassing-refining-of-aluminium-doors-jamaica","tag-degassing-refining-of-aluminium-extrusion-jamaica","tag-degassing-refining-of-aluminium-paraguay","tag-degassing-refining-of-aluminium-roofing-jamaica","tag-degassing-refining-of-aluminium-windows-for-sale-jamaica","tag-degassing-refining-of-aluminum-companies-in-guyana","tag-degassing-refining-of-francis-aluminum-guyana","tag-degassing-refining-of-guyana-aluminium","tag-degassing-refining-of-guyana-aluminium-industry","tag-degassing-refining-of-guyana-aluminium-prodcuts-limited","tag-degassing-refining-of-guyana-aluminium-products-ltd","tag-degassing-refining-of-guyana-aluminium-roofing-sheets","tag-degassing-refining-of-guyana-aluminium-smelter","tag-degassing-refining-of-guyana-aluminium-windows","tag-degassing-refining-of-guyana-aluminum","tag-degassing-refining-of-guyana-aluminum-industry","tag-degassing-refining-of-guyana-aluminum-limited","tag-degassing-refining-of-guyana-aluminum-plant","tag-degassing-refining-of-guyana-aluminum-products-limited","tag-degassing-refining-of-guyana-aluminum-smelter","tag-degassing-refining-of-jamaica-aluminium","tag-degassing-refining-of-jamaica-aluminium-industry","tag-degassing-refining-of-jamaica-aluminum","tag-degassing-refining-of-jamaica-aluminum-company","tag-degassing-refining-of-jamaica-bar-stool-aluminium","tag-degassing-refining-of-kaiser-aluminum-guyana","tag-degassing-refining-of-lion-aluminum-guyana","tag-degassing-refining-of-new-day-jamaica-aluminium","tag-degassing-refining-of-royal-aluminum-guyana","tag-degassing-refining-of-valco-aluminum-guyana"],"yoast_head":"\n
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