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Journal of Projectiles, Rockets, Missiles and Guidance >

2025 , Vol. 45 >Issue 1: 115 - 121

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2025.01.016

Study on Isostatic Pressing Method for Metal and Non-metal Mixed Powders Oriented to Energetic Materials

  • ZHANG Ke , 1 ,
  • HAN Mengwei 2 ,
  • GE Zaizheng 2 ,
  • WANG Guangyu 1 ,
  • WU Feng 1 ,
  • LIU Aijun 3 ,
  • ZHENG Changjun , 2
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  • 1 Technology Research Institute, Jiangnan Industries Group Co., Ltd., Xiangtan 411207, Hunan, China
  • 2 School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, Anhui, China
  • 3 School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, Anhui, China

Received date: 2024-11-27

  Online published: 2025-03-12

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Abstract

The quality of explosive charge is a key factor affecting the performance of artillery weapons, and the explosive charge is often a mixture of powders. To improve the quality of cylinders made by a mixture of metal and non-metal powders, the mechanical behavior of the cylinders was described using continuum plasticity theory, the Shima-Oyane model and the Ogden model were employed as the material constitutive models for the cylinders and the rubber sleeve, respectively. And a simulation model for the isostatic pressing of cylinders was developed utilizing the nonlinear finite element software MSC.Marc. Based on the simulation model, the forming mechanism of cylinders was explored, and a comparative study was conducted on the influence of isostatic pressing process parameters on the forming quality of the cylinders. The results indicated that the simulation model could effectively reflect the forming characteristics of the cylinders. The maximum pressure and it’s holding time of isostatic pressing were the key factors that influenced the quality of the cylinders. When the pressure was set at 240 MPa and the holding time exceeded 400 s, the overall relative density of the cylinders reached above 97%, with the density distribution difference was below 0.5%. The results of the isostatic pressing experiment verified the accuracy of the simulation analysis results. The cylinders with approximate length-to-diameter ratios of 5∶1 achieved a higher process standard and satisfied the process requirements.

Key words： isostatic pressing of explosive charge; finite element analysis; mixed powders; charge density

Cite this article

ZHANG Ke , HAN Mengwei , GE Zaizheng , WANG Guangyu , WU Feng , LIU Aijun , ZHENG Changjun . Study on Isostatic Pressing Method for Metal and Non-metal Mixed Powders Oriented to Energetic Materials[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2025 , 45(1) : 115 -121 . DOI: 10.15892/j.cnki.djzdxb.2025.01.016

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