Molten metal stirring method

Abstract

This invention discloses a molten metal stirring method which comprises the following steps that: a molten metal is introduced into a furnace body in an eddy flow mode, the molten metal entering the furnace body forms a molten metal bath, and the molten metal on the surface of the molten metal bath forms an eddy flow; a periodically-changed magnetic field is formed at the periphery of the furnace body, an electromagnetic effect is generated among the magnetic field, the eddy flow and the molten metal bath, and a volute electromagnetic force generated in the molten metal bath promotes the molten metal in the molten metal bath to continue to move; and a scheduled time later, the molten metal is led out of the bottom of the furnace body. According to the molten metal stirring method disclosed by the invention, an eddy flow is manufactured by using the gravity of the molten metal, so that when entering the furnace body, the molten metal has a certain speed and can be formed into an eddy flow. The invention also provides a rotatablely-changed magnetic field, an induced current is generated in the eddy flow of the molten metal by using an electromagnetic principle, and then an electromagnetic force is formed by using the induced current, so that the eddy flow of the molten metal can be sustained. The stirring of the molten metal is realized through the eddy flow.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for stirring molten metal by utilizing its own gravity and electromagnetic principle. Background technique [0002] In the field of metallurgy, melting metals is a very common and important process. The molten metal can be used to cast metal parts of various shapes. In the process of metal melting and casting, the uniformity of the molten metal will determine the product quality of the subsequent process. Due to the high melting point and high density of metal, it is difficult to achieve uniformity during melting and transportation, which will lead to insufficient melting of some raw materials or condensation during transportation. In order to solve this problem, the molten metal needs to be stirred to improve the uniformity of the molten metal. [0003] The stirring equipment in the prior art usually uses mechanical stirring, that is, a mechanical device is insert...

AI Technical Summary

Problems solved by technology

Mechanical stirring is easy to affect the purity of the molten metal due to the need to extend the mechanical device into the molten metal

Another stirring method is vacuum stirring. Although it has little influence on the purity of the molten metal, the cost of vacuum stirring is high and the stirring force generated is not enough.

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