Aluminum alloy smelting degassing equipment and degassing method thereof

Abstract

The invention provides aluminum alloy smelting degassing equipment and a degassing method thereof, and relates to the field of alloy refining, the aluminum alloy smelting degassing equipment comprises an L-shaped frame and a track, the track is arranged on the side wall of the L-shaped frame, a cross beam is arranged on the outer side of the track, and a sliding block at the cross beam is inserted into the track; a driving unit is fixed at the top end of the cross beam; a transmission shaft at the driving unit extends outwards relative to the bottom end of the cross beam; a gas treatment device is arranged below the cross beam and comprises a vibration assembly, the vibration assembly is arranged below the transmission shaft, an inlet pipe is vertically fixed to the top end of the vibration assembly, and the inlet pipe is connected with the transmission shaft through a coupler; the annular shell is arranged on the inner side of the vibration assembly, tiny bubbles are formed in molten aluminum, inert gas is evenly filled into the molten aluminum during slow rotation of the graphite rotor, and then wide-range fine treatment is conducted on hydrogen and oxygen.

Description

technical field [0001] The invention relates to the field of alloy refining, in particular to aluminum alloy smelting and degassing equipment and a degassing method thereof. Background technique [0002] The alloy liquid in the production process of die-casting parts needs to be refined. The adsorption refining method of die-casting aluminum alloy liquid mainly includes the methods of introducing nitrogen, argon, chlorine, mixed gas refining and using chloride salt refining. Blow in gas or react with the alloy liquid by adding a solvent to the die-casting aluminum alloy liquid to obtain hydrogen-free bubbles, and then use these small bubbles to adsorb hydrogen and oxidized inclusions during the floating process, and entrain them to the die-casting alloy liquid level to achieve removal. Gas and slag. [0003] In the process of aluminum alloy casting, it is necessary to use degassing equipment to discharge the hydrogen and oxygen in the aluminum liquid from the aluminum liqui...

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Problems solved by technology

[0003] During the aluminum alloy casting process, it is necessary to use degassing equipment to discharge the hydrogen and oxygen in the aluminum liquid from the aluminum liquid, so as to avoid the hydrogen and oxygen placed in the aluminum liquid, resulting in aluminum alloy casting, the texture contains For quality problems such as trachoma and pores, for this problem, at present, the degassing operation is mostly carried out based on the gas degassing method. This operation is mainly to blow inert gas into the melt, and then use the principle of partial pressure inside and outside the bubble to degas. In fact, it is When the hydrogen partial pressure inside the bubble is zero, the hydrogen will automatically diffuse to the bubble. The principle is to remove hydrogen first, and then use the principle of oxidation to remove oxygen. At present, when injecting gas, it is difficult to evenly distribute and integrate the bubbles into the melt only by stirring. Therefore, based on the above-mentioned problems, there is an urgent need for a method to control the size of the bubbles and evenly distribute the bubbles. Degassing equipment to solve the current problem of degassing

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