聚脂设备制造中的一个关键部件是内部叶轮中心轴。设备运转时 ,中心轴会受强大的扭矩作用及切应力而损坏 ,造成整个设备系统停止运转 ,故该轴的内在质量的检查相当重要。轴类工件的常规检测方法是超声波探伤 ,通过对轴体进行径向、周向及轴向等方法的扫查 ,可以检测出轴内部存 A key component in the manufacture of polyester equipment is the internal impeller center axis. Equipment operation, the central axis will be strong torque and shear stress damage, causing the entire equipment system to stop running, so the internal quality inspection of the shaft is very important. The common detection method of the shaft type workpiece is ultrasonic flaw detection. By scanning the shaft body in radial, circumferential and axial directions, the internal stock of the shaft can be detected