锻压技术

辊轮数量对辊挤成形筒体件质量的影响

英文标题：Influence of roller number on quality of cylinder parts in roll extrusion forming

作者：孙豪张宝红李旭斌张治民段志勇

单位：1.中北大学材料科学与工程学院精密成形中心山西太原 030000 2.新乡市特美特热控技术股份有限公司河南新乡453000

分类号：TG335；TG376.2

出版年,卷(期):页码：2019,44(5):73-81

摘要：

为研究辊轮数量对曲线回转外形筒体件辊挤成形表面质量的影响，利用Deform3D软件，对二辊、三辊和四辊辊挤成形进行了数值模拟。模拟结果表明，随辊轮数量增加，在同一平面内，辊边距型槽圆弧中心距离变短，辊边与型槽圆弧中心线速度更接近，金属变形更同步，变形更均匀。第1道次辊挤成形后，二辊辊挤工件口部极不平整，金属充满飞边槽后流入辊缝形成薄飞边，整形时出现折叠;三辊和四辊辊挤件口部较为平整，金属没有充满型槽，也没有流入辊缝。第2道次辊挤整形后，三辊、四辊辊挤工件未出现折叠、裂纹等缺陷。三辊辊挤时，金属流入飞边槽体积最少，故辊挤后工件长度最长。随着辊轮数量的增加，辊轮所受径向力呈减小的趋势，四辊受力最小。

In order to study the influence of roller number on the surface quality of cylinder parts with rotary curved shape, the roll extrusion forming processes with two rollers, three rollers and four rollers were simulated by software Deform3D. The results show that with the increasing of roller number, in the same plane, the distance between roller edge and circular arc center of groove becomes shorter, the speed of roller edge is closer to the speed of circular arc center of groove, the metal deformation is more synchronous, and the deformation is more uniform. After the first roll extrusion with two rollers, the mouth of workpiece is extremely uneven, and the metal fills the flash groove and then flows into the roll gap to form a thin flash edge, which is folded during shaping. However, the roll extrusion with three rollers and four rollers are relatively flat, the metal does not fill the groove and does not flow into the roll gap. After the second roll extrusion with three rollers and four rollers, folding and cracking do not appear. During the roll extrusion with three rollers, the metal flows into the flash groove with the least volume, 〖JP3〗so the length of workpiece is the longest after roll extrusion. With the increasing of roller number, the radial force acting on rollers tends to decrease, and the force acting on four rollers is the smallest.

基金项目：

国家自然科学基金资助项目 (51775519)；中北大学科研创新团队支持计划资助（201601）

作者简介：孙豪（1991-），男，硕士研究生 Email：sunhaoyuni@163.com 通讯作者：张宝红（1971-），男，博士，教授 Email：zhangbh@nuc.edu.cn

参考文献：

［1］张浩, 闻泉, 王雨时, 等. 空心弹空气阻力特性计算与数值仿真
［J］. 兵器装备工程学报, 2016, 37(7): 5-11.

Zhang H，Wen Q，Wang Y S, et al. Theoretical calculations and numerical simulation on air resistance characteristics of hollow projectile
［J］.Journal of Ordnance Equipment Engineering，2016，37(7): 5-11.[ZK)]

［2］李良琦, 李晓红, 高彬彬.国外高效毁伤战斗部弹体关键制造技术综述
［J］. 国防制造技术, 2013, (4): 22-27.

Li L Q, Li X H, Gao B B. A summary of key manufacturing technologies for efficient damage warheads in foreign countries
［J］. Defense Manufacturing Technology, 2013, (4): 22-27.[ZK)]

［3］张志明, 黄少东, 庞丹,等. 弹体热冲拔成形工艺数据库研究与开发
［J］.精密成形工程，2013, 5(6): 36-41.

Zhang Z M, Huang S D, Pang D, et al. Research and development of database for hot drawing process of projectile
［J］.

Journal of Netshape forming Engineering, 2013, 5(6): 36-41.[ZK)]

［4］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. Research on forming process of thermal blanks of projectile blanks
［J］. Journal of Netshape forming Engineering, 2016, 8(1): 101-105.[ZK)]

［5］王宏伟, 张宝红, 张治民. 曲线回转外形筒体零件无飞边辊轮引伸新技术
［J］. 塑性工程学报, 2014,21(3):31-35.

Wang H W, Zhang B H, Zhang Z M. Research on the new technology of the noflash rolldie drawing of cylinder parts with curvilinear rotating shape
［J］. Journal of Plasticity Engineering, 2014,21(3): 31-35.[ZK)]

［6］王宏伟, 张宝红, 李泽勇，等. 变壁厚筒形件辊挤成形数值模拟分析
［J］. 热加工工艺，2014，43(9): 102-105.

Wang H W, Zhang B H, Li Z Y, et al. Numerical simulation of roll extruding forming of cylinders with variational wall thickness
［J］. Hot working Technology, 2014,43(9): 102-105.[ZK)]

［7］赵熹, 张治民, 薛勇. 变壁厚回转体构件辊挤-引伸成形模具优化设计
［J］. 兵器材料科学与工程, 2016,39(3):34-39.

Zhao X, Zhang Z M, Xue Y. Optimum design on forming mould of rolling extrusion for revolving body components with changeable wall thickness
［J］. Ordnance Material Science and Engineering，2016,39(3):34-39.[ZK)]

［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 the Large Caliber Projectiles
［D］. Taiyuan:North University of China,2014.[ZK)]

［9］赵熹, 张治民, 张宝红. 变壁厚筒形构件辊挤成形过程数值模拟
［J］. 兵器材料科学与工程, 2014,37(1):22-26.

Zhao X, Zhang Z M, Zhang B H. Numerical simulation of roll forming process of variable wall thickness tubes
［J］. Ordnance Material Science and Engineering,2014,37(1):22-26.[ZK)]

［10］吴晶莹, 赵熹, 焦大勇,等. 变壁厚筒体构件引伸-辊挤复合成形技术及装置研究
［J］. 兵器材料科学与工程,

2015,38(2):31-35.

Wu J Y, Zhao X, Jiao D Y, et al. Research on extensionroller composite forming technology and device for variable wall thickness tubular members
［J］. Ordnance Material Science and Engineering,2015,38(2): 31-35.[ZK)]

［11］刘健, 张治民, 张宝红. 非直壁外形筒体零件辊挤成形工艺设备研究
［J］. 精密成形工程, 2010, 2(2):76-79.

Liu J, Zhang Z M, Zhang B H. Research on roll extrusion process equipment for nonstraight wall shaped cylinder parts
［J］. Journal of Netshape Forming Engineering, 2010, 2(2): 76-79.[ZK)]

［12］刘健,张治民,张宝红.曲线回转外形零件辊挤成形过程的数值模拟研究
［J］.热加工工艺,2010,39(5):78-81.

Liu J,Zhang Z M, Zhang B H. Numerical simulation study on roll forming process of curved rotary parts
［J］.Hot Working Technology,2010,39(5):78-81.

服务与反馈：

【文章下载】【加入收藏】