摘要
对越野车外星轮成形进行了应变、热、磨损等多因素耦合下的模拟,分析了预、终成形过程的金属流动特性及模具和坯料的温度场分布,对局部温度的升降进行了解析,并针对工位间的热量散失进行了有效的预测。应用Archard模型分析了终锻成形模具在复杂多因素耦合情况下的磨损情况,预测了单次磨损深度分布,为间接预测模具寿命提供依据。依据模拟设计的工艺方案得到了很好的实验验证。
The multifactor coupling of forming process of besides-star wheel was simulated. The metal flowing and temperature field of dies and billet were analyzed during preforming and final-forming process. The temperature varying and heat loss were forecast. Based on Archard wear model the single-step wear depth in multifactor coupling conditions was evaluated, which helped to evaluating die life. The process scheme according to simulation results got good test verifying.
出处
《热加工工艺》
CSCD
北大核心
2008年第11期37-39,共3页
Hot Working Technology
基金
科技部技术创新项目(07C26215110824)
关键词
外星轮
挤压
磨损
耦合
besides-star wheel
extrusion
wear
coupling
