Aluminum melt vacuum treatment system and method

Abstract

The invention discloses an aluminum melt vacuum treatment system and method. The aluminum melt vacuum treatment system comprises an aluminum melting furnace, a vacuum circulation degassing device, a permanent magnet stirring device and a feeding device, the vacuum circulation degassing device is located above the aluminum melting furnace, the top of the vacuum circulation degassing device is connected with the feeding device in a sealed mode, the vacuum circulation degassing device comprises a vacuum chamber with the side wall provided with an extraction opening and comprises a first channel and a second channel which are located at the bottom of the vacuum chamber and communicate with each other, the first channel and the second channel are inserted into the aluminum smelting furnace, aninert gas inlet is formed in the outer side wall of one of the channels, the permanent magnet stirring device is located at the bottom of the aluminum smelting furnace and comprises an inductor and afrequency converter connected with the inductor, a feeding port is formed in the top of the feeding device, a discharging port is formed in the bottom of the feeding device, and the feeding port and the discharging port can be automatically opened and closed and form an interlocking relation. When the system is used for vacuum treatment of aluminum-based alloy or aluminum-based composite materialmelt, the vacuum degassing efficiency of the aluminum melt is greatly improved, and meanwhile, uniform stirring of alloy elements in the aluminum melt can be achieved.

Description

technical field [0001] The invention relates to the refining of aluminum melt, in particular to a vacuum processing system and method for aluminum melt. Background technique [0002] Aluminum-based alloys or aluminum-based composites require degassing and removal of impurities before casting. The corresponding raw materials (including alloying elements and reinforcing phase materials) need to be added to the aluminum melt. In order to make the distribution of alloying elements and / or reinforcing phases uniform and avoid segregation, it is necessary to stir while adding raw materials; among them, permanent magnetic stirring realizes non-segregation. Contact stirring to avoid secondary pollution to the aluminum melt, but the effect of permanent magnetic stirring is mainly concentrated in the lower half of the aluminum melting furnace, and the stirring effect on the upper half with a longer distance is weak. Contents of the invention [0003] In view of the above-mentioned d...

AI Technical Summary

Problems solved by technology

The corresponding raw materials (including alloying elements and reinforcing phase materials) need to be added to the aluminum melt. In order to make the distribution of alloying elements and / or reinforcing phases uniform and avoid segregation, it is necessary to stir while adding raw materials; among them, permanent magnetic stirring realizes non-segregation. Contact stirring to avoid secondary pollution to the aluminum melt, but the effect of permanent magnetic stirring is mainly concentrated in the lower half of the aluminum melting furnace, and the stirring effect on the upper half which is farther away is weak

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