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<\/p>\nThe principle of the online degassing system for metal is that the solubility of hydrogen in aluminum is determined by the partial pressure of hydrogen in the gas phase in contact with the aluminum melt. When the hydrogen partial pressure corresponding to the hydrogen content in the aluminum melt is greater than the hydrogen partial pressure in the actual gas in contact with the aluminum melt, the hydrogen in the aluminum melt will diffuse into the gas phase to achieve hydrogen removal.<\/p>\n
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Therefore, in order to remove as much hydrogen in the aluminum melt with as little inert gas as possible, the online inert gas removal of hydrogen should follow the following principles:<\/p>\n
The lower the content of hydrogen and oxygen in the inert gas, the better;
\nThe more bubbles formed by the inert gas blown into the melt, the smaller, and the more dispersed the better;
\nSemakin lama gelembung-gelembung itu bertahan di dalam lelehan aluminium, semakin baik.
\nBecause aluminum alloy wires have incomparable performance with ordinary steel core aluminum stranded wires, aluminum alloy wires have been widely used in the world at present, and their consumption has reached 20% of the total amount of wires. The wire is brittle and broken locally and has poor bending performance. The main reason is that the magnesium in the aluminum alloy liquid changes the dissolution rate of hydrogen in the liquid aluminum and improves the solubility of hydrogen, making the aluminum alloy liquid more hydrogen than ordinary aluminum liquid Much higher. If the hydrogen and impurities in the aluminum alloy liquid are not removed, the mechanical properties such as bending and torsion of the aluminum alloy wire will hardly meet the quality requirements.<\/p>\n