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介绍一种新的钢管剪切方法──圆周剪切法。其原理是让剪切刀刃绕某一中心点旋转沿钢管圆周逐步切入，以实现钢管切断。通过运动分析阐述了剪切金属的变形过程；实验研究证明了方法的合理性；并对切口断面的质量进行了分析。
Introducing a new method of steel pipe shearing-circumferential shearing method. The principle is to make the cutting edge rotate around a certain center of the pipe along the circumference of a gradual cut, in order to achieve steel cut off. The deformation process of shearing metal is expatiated through the motion analysis. The experimental research proves the rationality of the method. The quality of the shearing section is also analyzed.