ABSTRACT

This paper addresses the problem of temperature difference between the different strands in a 7-outlets tundish of a steel plant by using physical modelling and numerical simulation methods. The problem of large temperature difference between different strands was solved and stability was achieved in the field production process. The parameters such as stagnation time and peak time by each stream were calculated by physical modelling and the optimized parameters based on temperature difference were implemented in the actual production process, which could predict an accurate temperature difference between strands in multi-flow tundish. The average temperature difference between side flow and intermediate flow of tundish was reduced from 15°C to 5°C by reasonable adjustment of flow control device between different strands, which provides basic support for improved billet quality, prevents breakout accident during continuous casting operation, reduces the pouring temperature and ensures the low-temperature rapid casting.

摘要

本文采用物理建模和数值模拟的方法解决了钢厂七出口中间包中不同铸流之间的温差问题。解决了不同绞线温差大的问题，实现了现场生产过程的稳定。通过物理建模计算各流道的停滞时间、峰值时间等参数，并在实际生产过程中实施基于温差的优化参数，可以准确预测多流道中间包流股之间的温差。通过合理调整不同流间的流量控制装置，使中间包侧流和中间流的平均温差由15℃降低到5℃，