Electromagnetic stirring and flow control device technology for multi-mode bar plate continuous casting crystallizer

Abstract

The invention relates to an electromagnetic stirring and flow control device technology for multi-mode bar plate continuous casting crystallizer, which includes respectively setting the inner arc induction apparatus and outer arc induction apparatus which are from electromagnetic stirring induction apparatus at two sides of the crystallizer copper plate, and molten steel passing through the induction apparatus and crystallizer copper plate. The inner arc induction apparatus and outer arc outer arc induction apparatus respectively set at least four magnetic field zone, and the magnetic field size and field direction of each magnetic field zone can be adjusted independently, and by changing the setup of magnetic field, single rotation stirring schema, electro-magnetism slowdown schema, electro-magnetism speedup schema, two zones rotation stirring schema and four zones rotation stirring schema can be combined into. The invention tentatively manufactures one set of multi-mode bar plate continuous casting crystallizer electromagnetic stirring and flow control device by employing slotless and magnetic shading technology, which well accounts for the difficulty of installation, greatly diminishes the alteration cost caused by increasing electromagnetic stirring, and also greatly increases the metallurgy effect of bar plate crystallizer electromagnetic stirring.

Description

technical field [0001] The invention relates to an electromagnetic stirrer, in particular to an electromagnetic stirrer and flow controller technology for a multi-mode slab continuous casting crystallizer. Background technique [0002] There are currently two types of electromagnetic induction technology for slab continuous casting molds: a. single-mode rotating magnetic field electromagnetic stirring technology, b. three-mode mold electromagnetic flow control with electromagnetic acceleration, electromagnetic deceleration and single rotating magnetic field electromagnetic stirring functions technology. The first technology is represented by Japan's Nippon Steel, and is mainly used for stirring steel types that require high quality on the surface and subsurface of the slab. Two pieces of electromagnetic stirring inductors are installed on the inner and outer arc sides of the slab crystallizer. When working, each generates a moving magnetic field of the same size but opposit...

AI Technical Summary

Problems solved by technology

Its shortcoming is still that the molten steel flow caused by electromagnetic rotary stirring cannot go deep into the center of the billet, and it cannot produce a rotary motion that penetrates into the center of the molten steel like the electromagnetic stirring of the square billet mold, so it cannot actively make the inclusions that have entered the interior of the molten steel and Bubbles gather and float up, and at the same time, there is no function to eliminate the superheat of molten steel, so the improvement of the internal quality of the slab is still limited

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