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以某钩尾框精密辊锻工艺为研究对象,首次应用响应面法(RSM)和有限元数值模拟法(FEM)对精密辊锻件的长度控制问题进行了研究.首先以满足辊锻件长度和降低轧辊最大扭矩为目标,采用FORGE3有限元软件建立了RSM与FEM相结合的二阶分析模型,研究了轧辊间隙、摩擦因子、轧辊转速和坯料温度对辊锻件的长度和轧辊最大扭矩的显著性和影响规律;其次采用优化后的工艺参数对该辊锻工艺进行了再模拟,提出了辊锻件长度的调试原则,利用该原则和点的反追踪技术对辊锻模具进行了再设计,同时分析了设计、模拟和生产辊锻件的长度和辊锻过程的功率耗散和分布.研究结果表明:应用RSM和FEM可准确有效地掌握精密辊锻件的长度控制技术.
Taking the precision roll forging process of a yoke frame as the research object, the length control of the precision roll forging was studied for the first time by using response surface method (RSM) and finite element numerical simulation (FEM) .Firstly, to meet the requirements of roll forging length and reduction The maximum torque of the roller was taken as the goal. The second-order analysis model combining RSM and FEM was established by FORGE3 finite element software. The significance of the roll gap, friction factor, roll speed and billet temperature on the roll forging length and roll maximum torque and The rules of the roll forging are re-simulated by using the optimized process parameters, the principle of debugging for the length of roll forging is proposed, the roll forging die is redesigned by using the principle and point tracking technology, The length of roll forging and the power dissipation and distribution of the roll forging are designed, simulated and produced.The results show that RSM and FEM can accurately and effectively master the length control technology of precision roll forging.