Method for setting induction stirring parameter of round blank continuous casting crystallizer

Abstract

The invention relates to a method for formulating electromagnetic stirring parameters of a round billet continuous casting crystallizer. In order to overcome the problem that there are few studies on the determination of stirring parameters or the research conclusions are quite different, a combination of steel type, billet size, casting machine and electromagnetic stirring equipment is invented, and the electromagnetic stirring is determined through numerical simulation analysis and experimental verification. The formulation method of parameters such as current intensity and frequency. This method is based on the simulation results of the magnetic field distribution of electromagnetic stirring, and performs coupling calculations on the flow field, temperature field, and movement trajectory of the molten steel in the mold during the electromagnetic stirring process. The rationality of the electromagnetic stirring parameters is judged by investigating and judging the rationality of the electromagnetic stirring parameters, and then the calculation results are compared with the field sampling test to determine the electromagnetic stirring parameters. The method of the present invention can quickly, accurately and effectively determine the current intensity and frequency of electromagnetic stirring under different conditions, significantly reduce inclusions and air bubbles on the surface of the slab and under the skin, expand the equiaxed crystal ratio, improve the quality of the core, and increase the compactness of the structure and uniformity.

Description

technical field [0001] The invention relates to a production technology of electromagnetic stirring for a round billet continuous casting crystallizer, in particular to a method for determining the current intensity and frequency of the electromagnetic stirring for a continuous casting billet crystallizer. technical background [0002] With the development of society and the advancement of science and technology, higher requirements are put forward for the internal quality of the slab, especially for the refinement and homogenization of the solidification structure of the slab. Mold electromagnetic stirring technology is an effective means of controlling the solidification process of metals. It has a wide range of applications and a solid industrial foundation. It plays an important role in homogenizing and improving tissue compactness. The essence of electromagnetic stirring is to strengthen the movement of molten steel in the liquid phase cavity by means of the electromag...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome or make up for the problem that most enterprises or inventors have done more research on the equipment of electromagnetic stirring of the crystallizer, but the determination of the stirring parameters equally important as the equipment is less researched or the research conclusions are quite different, a combination of steel is invented. Species, slab cross-sectional size, casting machine and electromagnetic stirring equipment, through numerical simulation analysis and experimental verification, determine a reliable method for formulating parameters such as current intensity and frequency of electromagnetic stirring in the mold, in order to produce better quality continuous casting slabs

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