通道式感应加热中间包的数值模拟

炼钢

通道式感应加热中间包的数值模拟

(1.东北大学材料电磁过程研究教育部重点实验室，辽宁沈阳 110004；2.东北大学材料与冶金学院，辽宁沈阳 110004)

接受日期:1900-01-01 出版日期:2015-08-05

Mathematical simulation for tundish with the channel type induction heating

Accepted:1900-01-01 Online:2015-08-05

摘要/Abstract

摘要： 通道式感应加热中间包为精确控制结晶器内钢液的过热度提供了可能，有必要使用ANSYS和CFX软件计算通道式感应加热中间包电磁场、流场及温度场分布来揭示中间包内电磁冶金过程。计算结果表明：通道内的感生电流密度大于注入室和分配室内的感生电流密度；在中间包通道内磁场和电磁力的不均匀分布促使钢液旋转流动，且在通道内钢液出现双漩涡现象；但是感应加热中间包内钢液温度均匀，其中间包水口截面最高温度与最低温度仅差1 K；无感应加热装中间包进出口温降可达到7 K，采用感应加热技术能够使中间包温降得到补偿。

关键词: 中间包, 通道式感应加热, 电磁力, 焦耳热, 温度场, 流场

Abstract: Tundish with the channel type induction heating is a powerful tool to control the superheat degree of molten steel in the mold precisely, so commercial software ANSYS and CFX were applied to analyze the electromagnetic field, velocity field and temperature field of molten steel in order to describe the process of electromagnetic metallurgy in the tundish. Numerical results indicated that, the induced current density in the channel was greater than that in the receiving chamber and the distributing chamber. In the channel, the nonuniform spatial distribution of magnetic field and electromagnetic force causes the molten steel to rotate, and there were two vortices at the cross section of the channel. But in the tundish with the channel type induction heating, the temperature of the molten steel was uniform, and the maximum temperature difference was only 1 K at the cross section of outlet. Without induction heating, the temperature drop between the inlet and the outlets was 7 K. With channel induction heater, the temperature drop could be made up.

Key words: tundish, channel induction heating, electromagnetic force, joule heating, temperature field, flow field

代传民1，雷洪1，毕乾1，耿佃桥1，陈洪民1，赵岩2. 通道式感应加热中间包的数值模拟[J]. 炼钢.

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