40Cr凸轮轧槽不变轧制工艺的研究
发布时间：2018-07-17 21:10
【摘要】：针对凸轮常见生产方法存在的材料利用率过低、产量低、生产周期长等问题,尝试了轧制成形工艺。基于DEFORM刚塑性有限元法建立了凸轮轧槽不变,只改变辊缝的多道次轧制过程的三维有限元模型。模拟分析总延伸系数不同时轧件的孔型充满度,确定出最佳轧制道次为2;分析坯料直径不同时轧件的孔型充满度及变形均匀性,确定出最佳坯料直径为Φ72 mm。在Ф160 mm×200 mm两辊轧机上验证了在最佳轧制道次和坯料直径下,40Cr凸轮的轧槽不变轧制成形工艺。实验得到轧件横截面组织分布与模拟应变分布规律一致,证明了模拟结果的准确性。
[Abstract]:Aiming at the problems of low material utilization rate, low production rate and long production cycle, the rolling forming process was tried. Based on deform rigid-plastic finite element method, a three-dimensional finite element model of multi-pass rolling process with constant cam groove and only changing roll gap is established. By simulating and analyzing the pass filling degree of the workpiece with different total extension coefficient, the optimum pass number is determined to be 2, and the pass filling degree and deformation uniformity of the workpiece with different blank diameters are analyzed, and the optimum blank diameter is determined to be 桅 72 mm. The forming process of 40Cr cam under the optimum rolling pass and blank diameter is verified on the 160mm 脳 200mm two-high rolling mill. The experimental results show that the microstructure distribution of the cross section is consistent with the simulated strain distribution, which proves the accuracy of the simulation results.
【作者单位】： 西安建筑科技大学冶金学院;陕西省冶金工程技术研究中心;西北工业大学材料学院;
【分类号】：TG335.4;TH132.47
本文编号：2130945
[Abstract]:Aiming at the problems of low material utilization rate, low production rate and long production cycle, the rolling forming process was tried. Based on deform rigid-plastic finite element method, a three-dimensional finite element model of multi-pass rolling process with constant cam groove and only changing roll gap is established. By simulating and analyzing the pass filling degree of the workpiece with different total extension coefficient, the optimum pass number is determined to be 2, and the pass filling degree and deformation uniformity of the workpiece with different blank diameters are analyzed, and the optimum blank diameter is determined to be 桅 72 mm. The forming process of 40Cr cam under the optimum rolling pass and blank diameter is verified on the 160mm 脳 200mm two-high rolling mill. The experimental results show that the microstructure distribution of the cross section is consistent with the simulated strain distribution, which proves the accuracy of the simulation results.
【作者单位】： 西安建筑科技大学冶金学院;陕西省冶金工程技术研究中心;西北工业大学材料学院;
【分类号】：TG335.4;TH132.47
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