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以两种高径比棒坯为研究对象,针对一次热锻成锥齿轮毛坯的工艺,建立了应变、热磨损等多因素耦合下的刚粘塑性有限元模型,模拟分析了成形过程的金属流动特性,预测并解析了模具和坯料的温度场分布及演变,基于Archard模型分析了模具在该热锻过程中的磨损分布及深度,为间接预测模具寿命提供了依据。通过多种指标的评定获得了高径比合理的棒坯,对实际生产具有指导意义。
In this paper, two types of bars with high aspect ratio were selected as the research objects. According to the process of hot forging a bevel gear blank, a rigid visco-plastic finite element model was established by multi-factors such as strain and thermal wear. The metal flow The temperature field distribution and evolution of mold and billet were predicted and analyzed. The wear distribution and depth of mold during the hot forging process were analyzed based on Archard model, which provided a basis for indirect prediction of mold life. Obtained by a variety of indicators of the rationale for the high aspect ratio of the billet, the actual production of a guide.