基于接触摩擦量化作用的镁合金轧制力预报研究（英文）

Prediction for Magnesium Alloy Rolling Force Based on Quantitative Study of Contact Friction

针对镁合金热轧制工艺,通过协调有限元分析结果及物理试验数据,提出一种关于热轧制接触摩擦因子的确定方法,耦合多轧制工艺参数进一步拟合出其求解关系式,工艺参数包括:轧制温度,轧制速度以及压下率。在之前对AZ31B镁合金板材轧制过程轧制力预报模型及温度场数学模型建立研究的基础上,综合考虑接触单位压力及摩擦应力两方面因素的作用,对前期轧制力预报模型进行了优化重构,经确定接触摩擦作用到轧辊的压力约占整体轧制力的4.36%。

The magnesium alloy hot rolling process was investigated. A method was proposed to determine the friction factor in the process through the comparative analysis of finite element analysis result and experimental data. Mathematical model for solving the friction factor was established, combining with multi-parameters of the rolling process： rolling temperature, rolling speed and reduction rate. Based on calculation model of rolling force and temperature distribution along the contact region in hot rolling of AZ31B magnesium alloy in previous researches, to the rolling force prediction model was optimized and reconstructed considering the normal pressure and friction stress comprehensively. The contact friction stress and its influence on rolling force with an approximate percentage of 4.36% was defined.