基于Deform的热轧3003铝板带温度场的三维有限元模拟

3-D Finite Element Simulation of Temperature Field of Hot Rolled 3003 Aluminum Strip Based on Deform

采用三维有限元模拟方法研究了轧制速度、轧制界面热交换系数、轧件初始温度和压下率对热轧3003铝合金板带温度场的影响。结果表明:随着轧制速度增加,轧件温度升高,轧件的表面温差加大。因此,增加轧制速度需要加大乳化液喷射量。随着界面换热系数的变大,轧件的温度逐渐降低,轧件的表面温差减小。同时,大的界面换热系数可以减小乳化液喷射量。随着轧件初始温度的增加,轧件的表面温差减小。为了使得轧件温度分布更均匀,如果条件允许,可适度提高轧件的初始温度。随着压下率的增加,轧件在轧制区的平均温度随之升高,轧件的表面温度变化幅度加剧。因此,随着压下率的加大,需要增加乳化液的喷射量。

Effects of rolling speed, rolling interface heat exchange coefficient, initial temperature of rolled piece and reduction rate on temperature field of hot rolled 3003 aluminum alloy plate were studied by a three-dimensional finite element simulation method. The results show that with roiling speed increasing, the temperature of rolled piece increases, and the surface temperature difference also increases. Therefore, increasing rolling speed needs to increase the amount of emulsion injection. With the interface heat transfer coefficient becoming larger, temperature of rolled piece decreases gradually,and temperature difference of rolled piece surface reduces. Meanwhile, larger interface heat transfer coefficient can reduce the amount of emulsion injection. With the increase of the initial temperature of rolled piece, the temperature difference of rolled piece surface decreases. In order to make the rolled piece temperature distribution more uniform, the initial temperature of rolled piece can be moderately increased if conditions permit. With the increase of reduction ratio, the average temperature of the rolled piece in rolling zone increases. The variation amplitude of surface temperature of rolled piece is also enhanced. Therefore, with the increase of the reduction ratio, the amount of emulsion injection needs to be increased.