CAJ | 학술논문

为得到钢轨万能轧制过程轨头和轨底的精确宽展，以轨头和轨底宽展为待定参数，在坯料断面尺寸、设备参数、轧制工艺参数已知的基础上，基于上限原理推导得出包含轨头和轨底宽展系数的钢轨万能轧制过程总功率表达式，并应用MATLAB软件遗传算法工具箱编写M文件对钢轨万能轧制总功率进行单目标优化，得到轧制功率最小时的轨头和轨底宽展系数。为验证理论模型，对18 kg／m轻轨进行万能轧制实验，并用DEFORM 软件模拟其万能轧制过程，将优化后宽展系数与实验结果进行对比，两者误差小于2％。
위득도강궤만능알제과정궤두화궤저적정학관전，이궤두화궤저관전위대정삼수，재배료단면척촌、설비삼수、알제공예삼수이지적기출상，기우상한원리추도득출포함궤두화궤저관전계수적강궤만능알제과정총공솔표체식，병응용MATLAB연건유전산법공구상편사M문건대강궤만능알제총공솔진행단목표우화，득도알제공솔최소시적궤두화궤저관전계수。위험증이론모형，대18 kg／m경궤진행만능알제실험，병용DEFORM 연건모의기만능알제과정，장우화후관전계수여실험결과진행대비，량자오차소우2％。
For obtaining the spread of rail universal rolling exactly ,the spread of rail head and rail basewas set as two undeter‐mined parameters ,the size of beam blank ,the device parameters and the processing parameters were known in advance ,and based on the upper‐bound principle ,the equation of total rolling power was expressed by the spread coefficient of head of rail and base of rail .Moreover ,the M documents based on the MATLAB were programmed and the total rolling power was optimized ,then the corresponding spread coefficients can be obtained when the total rolling power is the minimum value .For verifying this theoretical model ,the experiments of 18kg/m light rail universal rolling were conducted ,and the rolling process was simulated by the rigid‐plastic FE software DEFORM .By comparing the simulation results with the optimized results ,the error between two results is no more than 2% .