外壁带凸台锥形截面环件轧制成形规律  

Rolling forming law of ring with convex cone section on outer wall

作　　者：万斯哲 兰箭[1,2] Wan Sizhe;Lan Jian(School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;Hubei Key Laboratory of Modern Auto Parts Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学材料科学与工程学院,湖北武汉430070 [2]现代汽车零部件技术湖北省重点实验室,湖北武汉430070

出　　处：《锻压技术》2023年第10期134-138,共5页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(51975439);国家重点研发计划(2022YFB3705500)。

摘　　要：介绍了一种外壁带凸台锥形截面环件的一体成形轧制工艺,该工艺降低了外壁带凸台锥形截面环件的材料消耗,提高了环件的整体质量。通过ABAQUS软件建立了该环件轧制成形的有限元模型,并对轧制成形工艺进行了分析,研究了轧制过程中Mises应力、内壁位移和等效应变的变化规律。结果表明:在环轧开始阶段,由于应力分布不均匀,应力呈周期性变化,在4.5 s后,环件的应力分布逐渐均匀;在材料填充凸台过程中,远离凸台孔处的材料堆积并高于凸台孔;凸台两侧的应变存在差异,且当进给量为4.5 mm时更加明显。实验结果与模拟结果相近,验证了该成形工艺的可行性。An integral forming rolling process of the ring with convex cone section on outer wall was introduces,which reduced the materi-al consumption of the ring with convex cone section on outer wall and improved the overall quality of the ring.Then,the finite element model of the ring rolling forming was established by software ABAQUS,the rolling forming process were analyzed,and change laws of the Mises stress,inner wall displacement and equivalent strain during rolling process were studied.The results show that at the beginning of ring rolling,due to the uneven stress distribution,the stress changes periodically.After the ring is rolled for 5 s,the stress distribution gradually becomes uniform.During the process of filling the boss with material,the material far away from the boss hole accumulates and becomes higher than the boss hole.There is a difference in strain on both sides of the boss,and it becomes more obvious when the feeding amount is 4.5 mm.The experimental results are close to the simulation results,which verifies the feasibility of the forming process.

关 键 词：锥形截面 环件轧制 凸台成形 Mises应力 内壁位移 等效应变 

分 类 号：TG306[金属学及工艺—金属压力加工]