Transactions of Materials and Heat Treatment

Title：Precision extrusion process for projectile body based on DEFORM-3D

Authors： Zhang Bincheng1 Yang Yong1 Gao Yuan1 Hao Yuan1 Hou Huimin1 Zhang Nan1 Yan Hongyan1 Shi Yiqing1 2 Li Haitao1

Unit： 1.Beijing Research Institute of Mechanical & Electrical Technology Co. Ltd.CAM 2.Jinan Precision Forming Engineering Technology Co. Ltd.

KeyWords： projectile body hot extrusion process molds forming load wall thickness

ClassificationCode：TG376.2

year,vol(issue):pagenumber：2023,48(12):151-156

Abstract：

The precision extrusion forming process of a Φ215 mm caliber projectile body was studied by finite element simulation software DEFORM-3D. Then, the process difficulties of large aspect ratio and variable cross-section during the projectile body forming process were analyzed, and the cross-sectional shrinkage rate of projectile body was calculated. It was clear that the projectile body could be formed by the precision extrusion process. Furthermore, the precision extrusion forming process mold was designed, and the dimensions of punch and die were optimized and analyzed to reduce the forming load. By setting three sets of experiments with the wall thicknesses of 6, 7 and 8 mm for projectile body, respectively, the distribution characteristics of flow velocity field and temperature field and equivalent strain field, and the changing rules of forming load for metal billets with different wall thicknesses were obtained. The results show that the forming load decreases with the increasing of wall thickness, and the temperature distribution and metal deformation during the forming process of the metal billet with the wall thickness of 7 mm are relatively uniform, which is the optimal wall thickness. The forming load of the metal billet with the wall thickness of 7 mm is 84.0 MN, and the equipment with the nominal pressure of 90.0 MN should be selected for the trial production.

Funds：

作者简介：张彬成（1999-），男，硕士研究生 E-mail：841197235@qq.com 通信作者：杨勇（1982-），男，博士，硕士生导师 E-mail：yy19821110@163.com

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