爆破器材2025，Vol.54Issue(1)：21-27,7.DOI:10.3969/j.issn.1001-8352.2025.01.004
工艺参数对空心药柱压制成型后回弹的影响
Influence of Process Parameters on the Springback of Hollow Grain Formed by Pressing Molding
摘要
Abstract
The springback of grain formed by pressing molding from polymer bonded explosive(PBX)powder is too large,resulting in uneven density distribution of the grain and affecting the quality of the grain.Based on the pressing molding method of explosive powder in continuum mechanics,a hollow grain pressing model of JOB-9003 was established u-sing Shima-Oyane material model.And the influence of different process parameters on the springback of hollow grain formed by pressing molding was analyzed.The results show that Shima-Oyane material model can effectively analyze the springback of hollow grain formed by pressing molding.The springback of the grain is larger at both ends and smaller in the middle in the axial direction.In the radial direction,the springback fluctuations in the inner and outer circular areas are larger,while the changes in the middle layer areas are smaller.When the pressing force is 20 MPa,the holding time is 60 s,and the pressing speed is 2 mm/s,the springback of the grain is the lowest,at 0.271 mm.And the average relative density is the highest,at 0.974.The densification degree of the grain is high,and the molding guality is good.关键词
PBX/粉末压制/Shima-Oyane/工艺参数/药柱回弹Key words
PBX/powder pressing/Shima-Oyane/process parameter/grain rebound分类
化学工程引用本文复制引用
卢洋,李自胜,肖晓萍,赵海波..工艺参数对空心药柱压制成型后回弹的影响[J].爆破器材,2025,54(1):21-27,7.基金项目
四川省科技计划项目(2017GZ0350,2018GZ0083) （2017GZ0350,2018GZ0083）
