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Simulation study on influence of exothermic riser on ingot solidification

K. F. Ji ; College of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan City, China
M. G. Shen ; College of Materials and Metallurgy, University of Science and Technology Liaoning, China
R. T. Li ; Liaoyang vocational college of Technology, Liaoyang City, China
X. L. Zhu ; State Key Laboratory of Metal Materials for Marine Equipment and Application of Iron & Steel Research Institutes of Ansteel Group Corporation, Anshan city, Liaoning, China
Z. S. Zhang ; Applied Technology College, University of Science and Technology of Liaoning, Anshan City, China

Sažetak

In this paper, the effect of exothermic riser on ingot solidification is studied by numerical simulation. Through the study, it is concluded that the combustion of exothermic risers delayed the solidification of steel in riser, and the solidification time increased significantly, extending about 8 143 / s. In the later stage of solidification, the temperature isotherm of the ingot is smoother than that of the ordinary ingot, making the angle of the solidification front larger, which is conducive to feed. The shrinkage of the ingot with heat riser is better than that of the common ingot. The shrinkage above 10 % of the ingot is almost not found in the ingot with exothermic riser, and the shrinkage of the ingot is mainly concentrated above the riser line. And it obviously improves the internal quality of the ingot.

Ključne riječi

Steel; ingot solidification; exothermic riser; feeding; numerical simulation

Hrčak ID:

206472

URI

https://hrcak.srce.hr/206472

Datum izdavanja:

1.1.2019.

Posjeta: 1.548 *