环模模孔锥角及进料腔长度对模孔强度影响研究

Study on the effect of ring die hole cone angle and feed chamber length on the die hole strength

环模的失效主要是由于环模模孔的磨损和疲劳破坏,模孔的结构参数直接影响模孔的失效快慢。研究环模模孔的结构,并对其进行优化,将对环模的寿命和生产率的提高起到决定性作用。本研究应用ABAQUS软件对改变模孔锥角的大小和进料腔长度的模型进行有限元分析,得到不同进料腔长度和锥角的模孔的应力分布图。找到锥角和进料腔长度对环模孔应力的影响关系。通过研究比较得到当锥角为60°,进料腔长度为6 mm时,环模模孔所受的应力较小。从而为环模孔的结构改进提供了依据。

Ring die failure is mainly due to the ring die hole wear and fatigue damage, the structure of the die hole parameters directly affect how the failure of die hole. The die hole structure, and carries on the optimization, ring die life and productivity will play a decisive role. The research application of ABAQUS software to change the cone angle and the feed chamber length of the ring die, finite ele- ment analysis for different feed chamber length and the cone angle of the cone distribution of stress of die hole. Find the cone angle and feed chamber length and the die hole stress influence relations. By the research when the cone angle is 60°, feed cavity length is 6 mm, the die hole stress is minimal.It has provided the basis for the structure improvement of ring die hole.