圆管在模具上受轴向压缩 ,翻转并非唯一的变形模式 ,还有如失稳、撕裂、扩口、卷曲等多种变形模式。本文应用能量观点分析了管材向外翻卷变形过程 ,提出了周向变形能增量控制管端翻卷变形的规律 ,并用实验加以验证 ,这为有效地控制翻管变形提供了理论依据 Pipe in the mold by the axial compression, flip is not the only deformation mode, as well as instability, tearing, flaring, curling and other deformation modes. In this paper, we analyze the process of turning the pipe outwards by using the energy point of view, and put forward the rule that the circumferential deformation can incrementally control the pipe-end rolling deformation and verify with the experiment, which provides a theoretical basis for effectively controlling the pipe-turning deformation