锻压技术

42CrMo环件轧制成形的数值模拟与分析

英文标题：Numerical simulation and analysis of rolling forming of 42CrMo rings

作者：王光艳梅益陈浪汪希奎

单位：贵州大学

分类号：TG335.19

出版年,卷(期):页码：2014,39(5):82-86

摘要：

在Deform-3D平台下建立环件径-轴向轧制的三维有限元模型，结合理论研究和实际试验对42CrMo环件的轧制成形过程进行数值模拟与分析，并研究其轧制过程中的变形规律及成形情况，为轧制生产合格环件提供合理工艺。结果显示：42CrMo环件轧制成形的模拟结果和理论研究吻合，大变形区为环件外圈，内径扩大速度大于外径；等效应变值外圈大于内圈，中心最小，最大等效应变处于轴向端面的棱角处；环件温度外圈高于内圈，中心最高，端面棱角处最低；材料损伤最严重的部位为轴向端面，最大损伤值为0.645。对模拟结果进行理论验证和实际试验验证，环件尺寸的模拟值和理论值误差在5%以内，试验结果和模拟结果接近。

The three-dimensional finite element model of radial-axial ring rolling was established based on Deform-3D platform. The ring rolling process of 42CrMo rings was numerical simulated and analyzed with the combined theoretical study and actual test, and the deformation rule and forming of 42CrMo rings were researched, which provided reasonable process for the rolling production of qualified rings. The results show that the simulation results coincide with theoretical study. The large deformation region is the outer ring, and the expanding speed of inner diameter is faster than that of outer diameter. The equivalent strain of outer ring is greater than that of inner ring, and the minimum and maximum equivalent strain respectively appear in the middle of ring and at the edge angle of axial end face. The temperature of outer ring is higher than that of inner ring, and the highest and lowest temperature respectively occur in the middle of ring and at the edge angle of end face. The maximum damage of material appearing at the axial end face is 0.645. The simulation results were verified by theoretical study and actual test, and the deviation of simulation and theoretical values of ring dimension is less than 5%,which indicates that the test results are close to simulation results.

基金项目：

贵州大学研究生创新基金(2012047)

王光艳（1988-），女，硕士研究生

参考文献：

［1］龚小涛，杨帆.驱动辊转速对环件轧制工艺影响规律研究[J].轻合金加工技术，2012，40（5）：47-52.Gong Xiaotao, Yang Fan. Effect of driving roll rotation speed on rolling process of rings[J].Light Alloy Fabrication Technology，2012，40（5）：47-52.
［2］Zhou Jie, Gong Xiaotao, Yang Xiaobing, et al. Effect of drive roll rotation speed on ring rolling process[J]. Advanced Materials Reseach，2011，189-193：2586- 2592.
［3］华林，黄兴高，朱春东.环件轧制理论和技术[M].北京:机械工业出版社，2001.Hua Lin, Huang Xinggao, Zhu Chundong. Theory and Technology of Ring Rolling[M].Beijing: China Machine Press，2001.
［4］李姝,刘东,马义伟.环件径轴双向轧制过程中抱辊运动轨迹的计算方法[J].热加工工艺，2010,39（11）：48-52. Li Shu, Liu Dong, Ma Yiwei. Calculation method of guide roll locus in radial/axial ring rolling[J].Hot Working Technology,2010,39（11）：48-52.
［5］He Yang, Liang gangguo, Mei Zhan. Research on the influence of material properties on cold ring rolling processes by 3D-FE numerical simulation [J]. Journal of Materials Processing Technology,2006, 206(8): 634-638.
［6］Cockroft M G, Latham D J. Ductility and the workability of metals[J].J.Inst.Metale,1968，96: 33-39.
［7］刘革.42CrMo钢塑性成形中的损伤开裂研究[D].长沙：中南大学，2011. Liu Ge. Research on Cracking Damage of 42CrMo Steel Plastic Forming[D].Changsha:Central South University，2011.
［8］欧新哲，杨合，孙志超，等.环件热辗扩温度场和应变场分布的研究[J].机械工程材料，2006，30（10）：80-87.Ou Xinzhe, Yang He, Sun Zhichao, et al. Research on temperature and strain fields distribution of hot ring rolling process[J].Materials for Mechanical Engineering，2006，30（10）：80-87.

服务与反馈：

【文章下载】【加入收藏】