上引连铸铜镁合金杆温度场模拟研究

Simulation Research on Temperature Field of Cu-Mg Alloy Rod by Upward Continuous Casting

建立了上引连铸铜镁合金杆温度场模型,对上引连铸铜镁合金杆的温度场进行了模拟,考察了浇注温度、上引速度以及顶杆温度对铜镁合金杆温度场的影响,确定了不同工艺参数下铜镁合金凝固过程的液穴深度。结果表明,在浇注温度为1 160℃,液穴深度随顶杆温度的增加而增加,且上引速度越快,影响越大。当浇注温度为1 185℃时,上引速度和浇注温度对液穴深度的影响相对减小。随着浇注温度的增加,液穴深度增加。实际生产中应尽量减少保温炉液面波动,以减少铜镁合金杆中缩孔的形成。

A temperature field model of the copper-magnesium alloy rod by upward continuous casting was established, and the temperature field of the copper-magnesium alloy rod was simulated. The effects of pouring temperature, updraft speed and top temperature on the temperature field of copper-magnesium alloy rod were investigated. The liquid depth of the solidification process of Cu-Mg alloy rod under different technological parameters was determined. The results show that when the pouting temperature is 1 160 ~C, the depth of liquid core increase with the-increase of temperature of plunger, and the updraft speed will be faster, and the impact will also be greater. When p0uriiig temperature is 1 185 ~C, the updraft speed and the influence of pouting temperature on the depth of liquid core will be relatively reduced. With the increase of pouting temperature, the depth of liquid core increases. In actual production, the fluctuation of the liquid level of the insulation furnace should be minimized to reduce the formation of shrinkage hole in the Cu-Mg alloy rod.