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为得到多参数耦合下冷轧铝带工作辊分段冷却调节特性,建立了工作辊和轧件的一体化耦合传热模型.耦合传热建模过程包含工作辊和轧件导热微分方程的建立、轧件变形热和摩擦热的求解、换热边界条件的确立、工作辊热辊形的计算及采用二维交替差分对微分方程进行求解.仿真结果表明,同一轧制参数下工作辊分段冷却正负方向调节能力近似相等,但单向调节幅度受轧制参数影响较大,轧制长度、喷射梁工作压力和摩擦系数的增加对分段冷却调控能力具有促进作用,轧制速度的作用则相反.
In order to obtain the multi-parameter coupled cold-rolled aluminum strip work roll segmental cooling regulation characteristics, an integrated coupled heat transfer model was established for the work roll and the rolling stock. The coupled heat transfer modeling process included the establishment of differential equations of work rolls and rolling heat conduction , The solution heat and friction heat of the rolling stock, the establishment of the heat transfer boundary conditions, the calculation of the hot roll shape of the work roll and the differential equation using two-dimensional alternating difference are solved.The simulation results show that the working roll section The cooling ability in the positive and negative directions is approximately equal, but the unidirectional adjustment amplitude is greatly affected by the rolling parameters. The rolling length, the working pressure and the friction coefficient of the injection beam increase the cooling capacity of the sub-cooling, and the effect of the rolling speed The opposite.