核电乏燃料元件烧结用钼镧舟皿的热冲压工艺研究  

Study on hot stamping process of Mo-La alloy sheet used in spent fuel of nuclear power

作　　者：王海文 翟丕齐 韩晓兰[2] 赵升吨[2] 孟德安[2] 朱成成[2] 

机构地区：[1]陕西省机械研究院,陕西咸阳712000 [2]西安交通大学机械工程学院,陕西西安710049

出　　处：《锻压装备与制造技术》2016年第6期52-56,共5页China Metalforming Equipment & Manufacturing Technology

基　　金：国家自然科学基金重点项目(51335009);陕西省科技统筹创新工程计划资助项目(S2016TQGY0206)

摘　　要：为了研究核电乏燃料元件烧结用钼镧舟皿中波纹压型的成形工艺,降低生产试制成本,本文采用整体成形法和分步成形法两种方法对其成形工艺进行研究。基于DEFOEM-3D软件,对钼镧板材的两种热冲压工艺进行数值分析,获得的结论如下:通过整体成形法获得钼镧舟皿底部波纹压型的整体成形力为8760kN,侧面波纹压型整体成形力为3940kN。整体成形法可一次性实现钼镧舟皿底部和侧面波纹压型的成形,具有效率高的特点,但是底部波纹压型的成形力大于目前设备的能力。分步成形法与整体成形法相比,第一个波纹压型的成形力为958kN,其余波纹压型的成形力为672kN。该成形工艺具有成形力小的优点,可在6300kN的液压机上实现波纹压型的成形,由于其在成形过程中当板材温度低于终锻温度,需要对板材进行重新加热,且在成形过程中存在板材和上模具的相对运动,成形过程相比较为复杂。因此可通过整体成形法成形侧壁波纹压型,采用分步成形法实现底部波纹压型。In order to study the corrugated molding process of Mo-La alloy sheet used in the spent fuel of nuclear powerand reduce the cost of production, two methods including the whole forming method and frac- tional step forming method have been adopted in the text. The numerical analysis has been conducted to two kinds of hot stamping process on the basis of DEFOEM-3D software. It is concluded that the forming force of the corrugated molding in the bottom and lateral wall are separately 8760 kN and 3940 kN in the whole forming process. The bottom and lateral forming can be completed in one time with high efficiency by use of whole forming process, but by which the bottom forming force is higher than the capacity of the current e- quipment.Comparing with the whole forming method, the fractional step forming method has the advantage of smaller forming force. The forming force of the first corrugated molding is 958 kN and the forming force of the others corrugated molding is 672 kN. The corrugated molding can be conducted in the 6300 kN hy- draulic press. The Mo-La alloy sheet has been requested to be heated when the temperature is lower than the final forging temperature during forming process. Besides, the relative movement between sheet and top tool also makes the forming process more complex. Therefore, the corrugated molding in the side wall could be formed by use of the whole forming process while the corrugated molding in the bottom could be realized by the fractional step forming method.

关 键 词：钼镧合金 热冲压 成形力 温度场 有限元分析 

分 类 号：TG386[金属学及工艺—金属压力加工]