Design method of continuous casting billet solidification tail end traveling wave electromagnetic stirring

Abstract

The invention provides a design method of continuous casting billet solidification tail end traveling wave electromagnetic stirring, and relates to the technical field of metal casting. The method comprises the steps: employing a traveling wave electromagnetic stirrer at the solidification tail end of a continuous casting billet, employing finite element analysis software for establishing a three-dimensional mathematical model of the traveling wave electromagnetic stirrer, and performing material attribute distribution and model networking on the model; loading a current to a coil in the model; setting boundary conditions to solve an electromagnetic force generated by a coil loading current, and extracting and displaying the electromagnetic force; interpolating the extracted electromagnetic force, importing the electromagnetic force into fluid calculation software, simulating the flowing of molten steel in the model, extracting streamline distribution on the longitudinal section of thecontinuous casting billet, obtaining the solute redistribution situation of the molten steel in the continuous casting solidification process, and then judging the center segregation situation of thecasting billet; finally, adjusting the parameters of the traveling wave electromagnetic stirrer, repeating simulation calculation, integrating the center segregation conditions of the casting blank under different parameters, and obtaining the optimal parameters of the traveling wave electromagnetic stirrer.

Description

technical field [0001] The invention relates to the technical field of metal casting, in particular to a design method for traveling wave electromagnetic stirring at the solidification end of continuous casting slabs. Background technique [0002] With the rapid development of the economy and the increasingly fierce market competition, the demand for high-quality steel materials required by the market is increasing day by day. Continuous casting billet products are widely used in the manufacture of major equipment in the fields of transportation, machinery manufacturing, petrochemical industry, wind power generation, etc., and have important strategic significance and economic value. With the continuous development of equipment manufacturing in the direction of large-scale and high-end, continuous casting billet products are also advancing in the direction of large cross-section and high performance. However, the problem of segregation at the center of the slab still needs ...

AI Technical Summary

Problems solved by technology

[0003] Since the solute changes with the solid phase ratio of the molten steel, the solute elements are continuously discharged from the solid phase to the liquid phase during the solidification process of the slab. At the end of the solidification, a large amount of solute gathers in the center of the slab to form a Center segregation, especially with the improvement of quality requirements in the production and application of continuous casting slabs, the increase of C solute in the center of the slab at the end of solidification can easily endanger the quality of steel and reduce the product performance of steel products

[0004] In order to improve the final quality of casting slabs, major steel mills mainly use such as figure 1 The rotary electromagnetic stirring at the solidification end is shown to reduce the center segregation, but the rotary electromagnetic stirring promotes the horizontal rotation of the molten steel, resulting in a dead zone in the center of the slab in the horizontal direction, which cannot fully mix the molten steel in the upper and lower parts of the slab. Uniform, limited improvement in central segregation

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