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Abstract：
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The shortcomings of traditional hot extrusion process for grenade shell with large caliber in technological process, product quality, production efficiency, cost control and equipment security were analyzed, and the improvement scheme was put forward. The production process was divided into four stations, namely pressing, necking-backward extrusion, primary necking and second necking. For the Ф155 mm grenade shell, based on the finite element simulation software DEFORM-3D, its forming process was simulated by the improved technology, and the flow state of metal as well as the distribution characteristics of temperature field, strain rate field, effective strain field and the change rule of load in each station were obtained. Finally, the design schemes of the combined process equipment for pressing, necking-back extrusion and the combined process equipment for two-stage necking process were put forward. The new equipment design scheme can provide reference for the upgrading and updating of grenade shell forming equipment.
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Funds：
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中央高校基本科研业务经费资助项目（3142018012，3142019016，3142018006），廊坊市科学技术研究与发展计划自筹经费项目（2018011040）
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AuthorIntro：
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李攀（1987-），男，博士，讲师，E-mail：lipanvc@163.com；通讯作者：赵军伟（1983-），男，硕士，讲师，E-mail：shower@yeah.net
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Reference：
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[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]郝红元, 王瑞栋. 弹体热成形模具材料成分及性能研究[J]. 热加工工艺,2012,41(14):115-116,120.
Hao H Y, Wang R D. Chemical composition and property analysis of projectile body hot forming die material[J]. Hot Working Technology, 2012, 41(14):115-116,120.
[4]孙全兆,杨国来,王鹏,等.某大口径榴弹炮弹带挤进过程数值模拟研究[J].兵工学报,2015,36(2):206-213.
Sun Q Z, Yang G L, Wang P, et al. Numerical research on rotating band engraving process of a large-caliber howitzer[J]. Acta Armamentarii, 2015, 36(2):206-213.
[5]夏克祥,姜春茂,刘海艳,等.弹体毛坯热冲拔工艺[J].精密成形工程,2017,9(2):102-106.
Xia K X, Jiang C M, Liu H Y, et al. heat drawing process of bullet workblank[J]. Journal of Netshape Forming Engineering, 2017, 9(2): 102-106.
[6]许丁.炮弹弹体毛坯精化新工艺研究[D]. 洛阳：河南科技大学,2014.
Xu D. Studies on New Technology of Cannonball Body Semi-product Precision Forming[D]. Luoyang: Henan University of Science and Technology, 2014.
[7]姜春茂,刘海燕,付伟,等.弹体毛坯热收口成形工艺研究[J]. 精密成形工程,2016,8(1):101-105.
Jiang C M, Liu H Y, Fu W, et al. Forming process of hot shell nosing of cannonball body semiproduct[J]. Journal of Netshape Forming Engineering, 2016, 8(1):101-105.
[8]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 Rolling-extrusion and Drawing Technology of Large Caliber Projectile Blanks[D]. Taiyuan: North University of China, 2014.
[9]李攀,罗建国,刘航,等.整体式挂车支承桥主轴变温挤压成形工艺[J]. 锻压技术，2018,43(3)：75-82.
Li P, Luo J G, Liu H, et al. Extrusion forming process with variable temperature for integral main shaft of trailer support bridge[J]. Forging & Stamping Technology, 2018,43 (3)：75-82.
[10]李卓，丁宵月.锻造生产线生产过程的数字化概述[J]. 锻压技术，2018,43(1):30-32.
Li Z，Ding X Y. Digitization overview of production process for forging production line[J]. Forging & Stamping Technology，2018,43(1):30-32.
[11]李攀,罗建国,卜祥丽,等.大口径厚壁管道热挤压成形过程微观组织模拟及实验研究[J]. 塑性工程学报，2019,26（3）：169-178.
Li P, Luo J G, Bu X L, et al. Numerical simulation and experimental study on the microstructure of large diameter and thick wall pipes during hot extrusion forming process[J].Journal of Plasticity Engineering，2019, 26（3）：169-178.
[12]徐平凡,肖文勋,王哲,等.高精度联动辊轧生产线的设计与应用[J]. 锻压技术, 2019, 44(4):127-130.
Xu P F, Xiao W X, Wang Z, et al. Design and application of high precision linkage rolling production line[J]. Forging & Stamping Technology, 2019, 44(4)：127-130.
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