锻压技术

外壁带凸台环件轧制成形规律

英文标题：Rolling law of ring with bosses on outer wall

关键词：环件轧制几何形状等效应变凸台高度轧制力

分类号：TG306

出版年,卷(期):页码：2023,48(1):144-149

摘要：

提出了一种外壁带凸台环件的新成形工艺方法, 该方法实现了环件的连续成形, 既能完成环件的扩径, 还能在环件的外壁上成形高质量的凸台。利用ABAQUS 有限元模拟软件, 建立了外壁带凸台环件轧制成形有限元模型, 并分析了轧制成形过程, 探究了轧制过程中几何形状、等效应变、凸台高度、轧制力的演变规律, 并通过试验验证了成形的可行性。结果表明:成形过程分为扩径阶段与凸台长大阶段, 扩径阶段的形变与环件轧制相似, 凸台长大阶段的形变与挤压相似; 凸台长大阶段所需的轧制力远远大于扩径阶段, 并且与进给量相关; 凸台截面积对凸台高度的影响较大, 而凸台形状对凸台高度几乎没有影响。

A new forming process method for ring with bosses on outer wall was proposed, and the continuous forming of ring was realized, which not only completed the diameter expansion of ring, but also formed a high-quality bosses on the outer wall of ring. Then, the rolling finite element model of ring with bosses on outer wall was established by finite element simulation software ABAQUS, and the rolling process was analyzed. Furthermore, the evolution laws of geometry, equivalent strain, boss height and rolling force during the rolling process was explored, and the feasibility of forming was verified by experiments. The results show that the forming process can be divided into two stages of diameter enlargement stage and boss growing stage. The deformation in diameter enlargement stage is similar to ring rolling, and the deformation in boss growing stage is similar to extrusion. The rolling force required in the boss growing stage is much larger than that in the diameter enlargement stage, and it is related to the feeding amount. However, the cross-sectional area of boss has great influence on the boss height, but the boss shap has little influence on the boss height.

基金项目：

国家自然科学基金资助项目(51975439)

作者简介: 兰　箭(1972-), 男, 博士, 教授 E-mail: jlan@ whut. edu. cn

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