Electromagnetic multi-cyclone stirring and casting device

Abstract

The invention discloses an electromagnetic multi-cyclone stirring and casting device and relates to the technical field of casting. The electromagnetic multi-cyclone stirring and casting device comprises a water tank; a crystallizer is installed inside the water tank; an electromagnetic device body is installed outside the crystallizer; the electromagnetic device body comprises fixed rods; and themultiple fixed rods are commonly provided and are divided into a plurality of groups. According to the electromagnetic multi-cyclone stirring and casting device, by changing the direction and the strength of a magnetic field, the stirring direction and the stirring strength of molten liquid can be effectively adjusted, the flowing form and the flowing speed of the molten liquid are controlled, the temperature distribution of the molten liquid in the crystallizer is uniform, the uneven thickness of an initial solidified blank shell is inhibited, the delayed solidification and blank shell deformation are reduced, the device has an obvious effect on improving the quality of a continuous casting blank, due to the facts that grains are refined, structures are uniformly distributed, the volumeshrinkage is reduced and the hot cracking tendency is reduced, the shrinkage porosity tendency is basically eliminated, and the mechanical properties of castings are greatly improved.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to an electromagnetic multi-swirl flow stirring casting device. Background technique [0002] With the development of continuous casting technology, people's requirements for casting quality have been continuously improved, and extremely harsh conditions have been put forward for the mechanical properties of slabs, the content of inclusions in slabs, and pores, especially for large-sized cast bars. Widely used in automotive panels, home appliances, ships, aerospace and other industries, not only requires uniform formability, but also puts forward higher requirements for surface quality. Electromagnetic stirring technology has become the current international technology to improve the performance of steel, aluminum and its alloys. One of the commonly used methods, electromagnetic stirring technology has attracted more and more attention, and has become a hot spot in electromagnetic ...

AI Technical Summary

Problems solved by technology

[0003] There are only two forms of existing electromagnetic stirring to stir the molten metal in the crystallizer: horizontal circulation and vertical oscillation of the molten metal (vertical linear). The horizontal circulation mainly exchanges the solution in the outer ring of the casting rod, which cannot achieve internal The temperature and composition of the surface are exchanged, and it is difficult to control the force. If it is too small, it will not be able to meet the temperature and composition exchange requirements. If it is too large, centrifugal action will cause the composition to segregate, and it will oscillate up and down. Because the direction of the magnetic field is an axial magnetic field, the radial direction of the magnetic field is limited. The penetration depth cannot be exchanged with the surrounding area, especially for large-sized cast rods, it cannot act on the core, so when using these two methods, the cast rods are prone to uneven composition and grains

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