基于有限元的400MN大型模锻压力机温度场分析

发布时间：2018-03-31 22:31

  本文选题：有限元法　切入点：钢丝缠绕　出处：《机械工程学报》2015年02期

【摘要】：模锻件热传导和辐射会造成钢丝缠绕模锻压机机架和动梁温度升高,使钢丝层蠕变加剧、预应力损失,液压介质性能下降,温度场分析至关重要。运用ABAQUS对400 MN模锻压力机进行稳态和瞬态温度场有限元分析,研究顶出缸、动梁钢丝层、机架钢丝层等部位温度场分布特征。结果表明,模具工作温度300℃时,48 h钢丝层温度不大于75℃,满足设计要求,8.4 h顶出缸油温大于70℃,超出设计允许值。鉴于改善散热条件无法有效降低油温,提出缸底、端部加隔热垫片(A)和模具、上模座间加隔热垫片(B)两种结构改进方案,经模拟验证,方案B效果佳,48 h顶出缸油温低于70℃,满足设计要求。有限元分析结果与温度场测量结果基本吻合验证了模型的合理性,温度场分析为压力机结构设计及锻造工艺制定提供有益参考。
[Abstract]:The heat conduction and radiation of die forging parts will cause the temperature of the frame and moving beam of steel wire winding die forging press to increase, the creep of steel wire layer is aggravated, the prestress loss, the performance of hydraulic medium is decreased, and the analysis of temperature field is very important.The steady and transient temperature field of 400mn die forging press was analyzed by using ABAQUS, and the temperature distribution characteristics of ejection cylinder, moving beam steel wire layer and frame steel wire layer were studied.The results show that when the working temperature of die is 300 鈩，

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