汽轮机转子中心孔超声检测工作越来越受到电力工业运行部门的重视,因为用于制造转子的大锻件的中心部位常含较多缺陷,开中心孔后,靠近中心孔壁处常残留一些缺陷。有的转子甚至在离中心孔较远处也有较多缺陷。为此研制了ZZC-1型转子中心孔超声检测装置。本文叙述了该装置的设计原理、主要技术性能及现场应用情况。 Ultrasonic testing of steam turbine rotor center hole is more and more concerned by the power industry operation department, because the center of the large forging used to manufacture the rotor often contains many defects. After opening the center hole, some defects often remain near the center hole wall. Some rotors have more defects even further away from the center hole. For this reason, developed a ZZC-1-type rotor center hole ultrasonic testing device. This article describes the design principles of the device, the main technical performance and field applications.