J307轮箍径-轴向轧制变形分析
Journal of Anhui University of Technology(Natural Science)（2023）
Abstract
提出基于环件外径实时变化的辊系运动自适应控制策略,以J307轮箍为研究对象,基于Marc/SuperForm有限元软件子程序开发,实现对轮箍轧制全过程的三维有限元模拟,分析轮箍轧制过程的尺寸变化、变形分布及轧辊受力等信息.结果表明:在既定工艺条件下,轧制第9～13圈时轮箍外径增量较大,最大达78 mm/圈;轧制过程轮箍断面心部变形最小,第9圈前心部变形主要发生在径向变形区,第9圈后轴向变形区也发生明显变形,轧制结束时断面心部累积变形应变达1.09;主辊和芯辊受力在轮缘孔型完全充满时均达最大、约1 400 kN,锥辊在外径达912 mm时受力最大、约900 kN.
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Key words
railway tyre,radial–axial rolling,metal forming,finite element analysis
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