锻压技术

基于DEFORM-3D的弹体精密挤压工艺

英文标题：Precision extrusion process for projectile body based on DEFORM-3D

作者：张彬成1 杨勇1 高远1 郝媛1 侯惠敏1 张南1 闫红艳1 石一罄1 2 李海涛1

单位：1.中国机械总院集团北京机电研究所有限公司 2.中机真空科技(济南)有限公司

关键词：弹体热挤压工艺模具成形载荷壁厚

分类号：TG376.2

出版年,卷(期):页码：2023,48(12):151-156

摘要：

利用有限元模拟软件DEFORM-3D对某Φ215 mm口径弹体的精密挤压成形工艺进行研究。分析了弹体成形过程中大长径比、变截面等工艺难点，计算了弹体断面收缩率，明确了可采用精密挤压工艺成形该弹体；设计了精密挤压成形的工艺模具，并且为降低成形载荷，对凸模和凹模的尺寸进行了优化分析；通过设置弹体壁厚为6、7和8 mm共3组实验，获得了不同壁厚金属坯料的流动速度场、温度场和等效应变场的分布特征以及成形载荷的变化规律。结果显示，成形载荷随着壁厚的增大而减小，其中壁厚为7 mm的金属坯料成形过程中的温度分布和金属变形均较为均匀，其为最优壁厚。壁厚为7 mm的金属坯料的成形载荷为84.0 MN，应选择公称压力为90.0 MN的设备进行试制。

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.

基金项目：

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

参考文献：

[1]程林,霸书红,蒋大千,等.大口径火炮内弹道参数的计算及仿真[J].兵器装备工程学报,2017,38(11):69- 72.

Cheng L, Ba S H, Jiang D Q, et al. Interior ballistic parameters calculation and simulation of large caliber gun [J].Journal of Ordnance Equipment Engineering，2017,38(11) : 69-72.

[2]孙全兆.大口径榴弹炮弹带挤进动力学研究[D].南京：南京理工大学,2016.

Sun Q Z. Study on Dynamics of Rotating Band Engraving for Large Caliber Howitzers [D]. Nanjing: Nanjing University of Science and Technology，2016.

[3]赵熹. 大口径弹体辊挤—引伸成形技术研究[D].太原：中北大学,2014.

Zhao X. Research on Roll Extrusion Extension Forming Technology for Large Caliber Bullet Bodies [D].Taiyuan: Central North University, 2014.

[4]陈小伟.动能深侵彻弹的力学设计(I):侵彻/穿甲理论和弹体壁厚分析[J].爆炸与冲击,2005,(6): 499-505.

图8薄壁筒形件热挤压工艺实验

（a）坯料加热（b）模具预热（c）模具润滑（d）挤压（e）卸料（f）成形件

Fig.8Hot extrusion process test for thin-walled cylindrical parts

(a) Blank heating(b) Mold pre-heating(c) Mold lubrication(d) Extrusion(e) Unloading(f) Formed part

Chen X W. Mechanical design of kinetic energy deep penetration projectiles (I): Penetration/armor piercing theory and analysis of body wall thickness [J]. Explosion and Shock Waves, 2005, (6): 499-505.

[5]张满慧,姚忠,曹中臣,等.大口径舰炮研制技术风险评估及后果仿真[J].火炮发射与控制学报,2021,42(3):93-99.

Zhang M H, Yao Z, Cao Z C, et al. Risk assessment and consequence simulation of large caliber naval gun development technology [J]. Journal of Gun Launch & Control, 2021,42 (3): 93-99.

[6]赵彦森,周云华,邱群先.美欧155毫米舰炮的研制与启示[J].舰船科学技术,2013,35(5):138-141.

Zhao Y S, Zhou Y H, Qiu Q X. Development and inspiration of 155 mm naval gun in the United States and Europe [J]. Ship Science and Technology, 2013,35 (5): 138-141

[7]梁培培. 铝合金弹体铸造工艺设计与优化[D].合肥: 合肥工业大学,2023.

Liang P P.Design and Optimization of Aluminum Alloy Bullet Body Casting Process [D]. Hefei : Hefei University of Technology, 2023

[8]王兴雷. 某H70弹壳体成形工艺数值模拟及实验研究[D].太原：中北大学,2023.

Wang X L. Numerical Simulation and Experimental Research on the Forming Process of a H70 Cartridge Case [D]. Taiyuan: Central North University, 2023.

[9]李硕. 特种材料筒形件精密热挤压关键技术及实验研究[D].北京：中国机械科学研究总院集团,2021.

Li S. Key Technologies and Experimental Research on Precision Hot Extrusion of Special Material Cylindrical Parts [D]. Beijing: China Academy of Machinery Science and Technology Group, 2021.

[10]高景龙. 基于人工智能的榴弹设计专家系统的研究[D].成都：电子科技大学,2014.

Gao J L. Research on the Expert System for Grenade Design Based on Artificial Intelligence [D]. Chengdu: University of Electronic Science and Technology, 2014.

[11]李尧.金属塑性成形原理[M].北京：机械工业出版社，2004.

Li Y. Principles of Metal Plastic Forming [M]. Beijing: Mechanical Industry Press, 2004.

[12]许丁. 炮弹弹体毛坯精化新工艺研究[D].洛阳：河南科技大学,2015.

Xu D. Research on New Technology for Refinement of Shell Body Blank [D]. Luoyang: Henan University of Science and Technology, 2015.

[13]李春天,王昶,胡亚民,等.镁合金电动螺丝刀刀把等温挤压成形研究[J].热加工工艺,2010,39(3):105-108,111.

Li C T, Wang C, Hu Y M, et al. Study on isothermal extrusion forming of magnesium alloy electric screwdriver handle [J]. Hot Working Technology, 2010,39 (3): 105-108,111.

[14]谢志平,万博维,张治民,等.大型深孔圆锥形构件省力挤压成形工艺研究[J].锻压技术,2015,40(2):87-92.

Xie Z P,Wan B W, Zhang Z M, et al. Research on labor-saving extrusion forming process of largedeep hole conical workpiece[J]. Forging & Stamping Technology,2015,40(2):87-92.

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