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采用刚塑性有限元法,以大型有限元软件DEFORM-3D为分析工具,考虑界面接触传热,对铜包铝复合电力扁排热轧成形过程进行了三维温度场模拟。结果表明:在轧件开始咬入与轧辊接触后,纯铜表面中部的温度先降低后升高,由于纯铜与轧辊的接触传热,轧辊与纯铜的接触部分温度低于铜包铝扁排侧部金属的温度;由于接触摩擦与塑性变形功转化为热量,开始轧制后轧件表面温度有所升高;轧制后铜包铝排铜层表面和铝芯的边部温度高于中部温度,由表及里温度升高;随着压下率的增大,在变形区轧件温度升高幅度增大;随着轧制速度的提高,在变形区铜层和铝芯温度变化更为剧烈,轧制后温降速率减小。
The rigid-plastic finite element method was used to simulate the three-dimensional temperature field of the flat-clad hot-rolled copper clad aluminum clad laminate with DEFORM-3D as the analysis tool and the contact heat transfer. The results show that the temperature in the middle of the pure copper surface first decreases and then increases after the rolling starts to bite into contact with the roll. The contact temperature between the pure copper and the roll is lower than that of the copper clad aluminum flat Row side of the metal temperature; due to contact friction and plastic deformation work into heat, rolling began rolling surface temperature has increased; after the copper-clad aluminum copper surface layer and the aluminum core edge temperature is higher than In the middle part, the temperature in the middle and the middle part increased. With the increase of the reduction rate, the temperature increase of the rolling part increased in the deformation zone. With the increase of the rolling speed, More intense, the temperature drop rate after rolling decreases.