摘要
为了分析盘形滚刀在轧制过程中的变形特点,以17英寸TBM盘形滚刀刀圈为研究对象,依据环件轧制工艺理论,对轧制模具主辊、芯辊和锥辊的运动参数进行了设计;基于DEFORM-3D建立了滚刀刀圈轧制成形的有限元分析模型,模拟分析了刀圈在轧制成形过程中温度场、等效应变场、几何形状和轧制力的变化规律;基于设计的工艺参数和模拟结果,开展了刀圈轧制成形试验研究,验证了研究刀圈轧制成形工艺采用数值模拟方法的可靠性。结果表明：刀圈轧制结束时,其整体温度分布由刀圈芯部到外表面梯度递增,最高温度为1200℃,最低温度为1040℃,等效应变最大值为14.4,最小值为0.178。刀圈稳定轧制阶段,径向轧制力在5×10~5N左右波动,轴向轧制力在1.5×10~5N左右波动。
In order to analyze the deformation characteristics of disc cutter in the rolling process,taking the 17 inch TBM disc cutter ring as the research object,the motion parameters of rolling die including the driving roll,the mandrel roll and the axial roll were designed according to the technology of ring rolling theory. Based on DEFORM-3D,a finite element analysis model for rolling forming of disc cutter ring was established,and the evolution rule of temperature field,effective strain field,geometry and rolling force during the ring forming process were simulated and analyzed. Based on the designed process parameters and simulation results,the research on the rolling forming test of the cutter ring was carried out,and the reliability of the numerical simulation method of the cutter ring forming process was verified. The results show that the overall distribution of temperature increases gradiently from the core to the outer surface of the ring when the rolling is finished,with the highest temperature of 1200 ℃ and the lowest temperature of 1040 ℃. The maximum value of the equivalent effect is 14. 4 and the minimum value is 0. 178. In the stable rolling stage,the radial rolling force fluctuates at 5 × 10~5 N,and the axial rolling force fluctuates at 1. 5 × 10~5 N.
作者
张小云
夏婧怡
仝磊
夏毅敏
ZHANG Xiao-yun;XIA Jing-yi;TONG Lei;XIA Yi-min(School of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China;School of Materials Science and Engineering,Central South University,Changsha 410083,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2018年第4期53-58,共6页
Journal of Plasticity Engineering
基金
国家高技术研究发展计划(2012AA041803)
湖南省战略新兴产业攻关项目(2015GK1029)
