Electromagnetic stirrer for stokehole modification of molten steel

Abstract

The invention discloses an electromagnetic stirrer for the stokehole modification of molten steel. The electromagnetic stirrer comprises a first shell, wherein a sealing top cover is arranged above the first shell, a fixed handle is fixedly welded to the upper surface of the sealing top cover, two second shells are fixedly mounted on the periphery surface of the first shell, and clamping bases arearranged on the inner sides of the second shell. A magnetic core and a coil are clamped by virtue of a clamping rod, a clamping top rod and a clamping base plate, are fixed and are safe and steady; and the churning degree of the molten steel in the stirrer can controlled by changing the placement positions of the magnetic core and the coil on the shell and changing the sizes of the magnetic coreand the coil, and a modifier is very effectively absorbed by the molten steel, so that the use amount of the modifier is reduced, the modification effect can be stabilized, the ''modification recession'' phenomenon is overcome, the electromagnetic stirrer is simple, flexible, convenient and rapid to operate, and the stabilization of a novel modifier for the industrial production is truly realized.

Description

technical field [0001] The invention relates to the technical field of electromagnetic stirrers, in particular to an electromagnetic stirrer for pre-furnace modification of molten steel. Background technique [0002] The essence of the electromagnetic stirrer is to strengthen the movement of the molten steel with the help of the electromagnetic force induced in the liquid phase cavity of the slab. Specifically, the alternating magnetic field excited by the stirrer penetrates into the molten steel of the slab, and induces a current in it. The induced current interacts with the local magnetic field to generate electromagnetic force, which is a body force and acts on the volume of molten steel. element, so as to promote the movement of molten steel. [0003] The molten steel needs to be modified. The modified treatment is to add some fine nucleating agents (also known as inoculants or modifiers) to the molten metal to form a large number of dispersed artificial non-spontaneous...

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to strengthen the research on the key issues of the modificator and how to improve the effective and uniform function of the modificator in the pre-furnace treatment process. This purpose can be easily and quickly achieved by using an electromagnetic strong stirrer. The internal magnetic core and coil of the electromagnetic stirrer adopt a single customized model, and the applicability is poor at the same time. The design of the electromagnetic stirrer is often complicated and bulky, which is not convenient for people to operate

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