Using metal plasticity forming theory, by the technology calculation of sulfur hexafluoride breaker shell flanging, a technology calculation method was introduced about pre-punching flanging.

• 运用金属塑性成形原理,通过六氟化硫断路器壳体孔翻边的工艺计算,介绍了一种曲面孔翻边预冲孔的一种近似工艺计算方法。该方法适用于同类零件的工艺计算及模具设计。