球头销辊式楔横轧球头成形规律研究  

Study on Forming Law of Ball Head in Roll Cross Wedge Rolling of Ball Pin

作　　者：闫华军 张超 张双杰 张军改 戎江 张招 石小猛 YAN Huajun;ZHANG Chao;ZHANG Shuangjie;ZHANG Jungai;RONG Jiang;ZHANG Zhao;SHI Xiaomeng(Hebei Key Laboratory of Material Near-net Forming Technology,School of Materials Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China;Hebei Technology Innovation Center of Cross Wedge Rolling,Shijiazhuang 050031,China;Hebei Dongan Precision Industry Co.,Ltd.,Shijiazhuang 050031,China)

机构地区：[1]河北科技大学材料科学与工程学院,河北省材料近净成形技术重点实验室,河北石家庄050018 [2]河北省楔横轧技术创新中心,河北石家庄050031 [3]河北东安精工股份有限公司,河北石家庄050031

出　　处：《热加工工艺》2023年第5期91-95,101,共6页Hot Working Technology

基　　金：河北省自然科学基金资助项目(E2020208044);石家庄市科学技术研究与发展计划项目(191080071A)。

摘　　要：为了研究球头销辊式楔横轧球头的成形规律,利用Deform-3D有限元模拟和点追踪分析得到了球头金属流动和分配规律以及应力、应变曲线。结果表明,通过金属体积分配确定了球头在原始坯料的成形位置,得到了球头金属流动轨迹,其呈周期螺旋线式运动。球头轴向等效应力值先增大后减小最后趋于稳定。当金属在靠近球头成形时,应力值仍然会增加,而到最大值的时间也会延长。球头轴向等效应变值逐渐增大,直到轧制完成,等效应变值达到最大;靠近料头的金属应变速率激增,应变值增大。In order to study the forming law of ball head in roll cross wedge rolling of ball pin,Deform-3D finite element simulation and point tracking analysis were used to obtain the metal flow and distribution law of ball head and the stress strain curves.The results show that the forming position of the ball head in the original blank is determined by metal volume distribution,and the metal flow track of the ball head is obtained,which is in the form of periodic spiral line motion.The axial equivalent stress of the ball head increases first,then decreases,and finally tends to stabilize.When the metal is formed near the ball head,the stress still increases,and the time to the maximum value is prolonged.The axial equivalent strain value of the ball head increases gradually until the rolling is completed and the equivalent strain value reaches the maximum,The strain rate of the metal near material head increases rapidly and the strain value increases.

关 键 词：球头销 楔横轧成形 有限元模拟 金属流动 

分 类 号：TG335.11[金属学及工艺—金属压力加工]