![\"Liquid](\"http:\/\/alalloycasting.com\/wp-content\/uploads\/2020\/07\/Liquid-Aluminum-Purification-1.jpg\")
<\/p>\nLiquid Aluminum Purification becomes one important step for casting aluminum alloy. With the development of modern science and technology and the demand of modern industry, materials science, as the three pillar industries in the 21st century, is developing in the direction of high specific strength, high strength and toughness. For a long time, cast aluminum alloy has been widely used in industry because of its low price, lightweight and reliable performance.<\/p>\n
However, due to the solidification shrinkage of cast aluminum alloys and easily soluble hydrogen, it inevitably contains a certain number of defects, such as voids, oxides, and non-metallic inclusions. These defects have a great influence on the mechanical properties of the components. For example, avoid with a volume fraction of 1% will cause 50% fatigue.<\/p>\n
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After the liquid aluminum is discharged from the furnace, it is degassed on-line, filtered, and then enters the mold to start continuous casting. Online degassing is performed using a rotary degassing device. The purification process is based on the principle of adsorption purification. Refining gas is blown out through the rotor. With the help of the rotating nozzle, small bubbles are evenly distributed and fully contact with the melt in the reaction chamber to purify the melt. The refining gas can be nitrogen or a mixture of nitrogen and chlorine.<\/p>\n