一、前言汽轮机隔板围带过去采用冲制、冲制方法对围带厚度有限制,一般冲4毫米厚、而且围带节距不易保证。在某型号汽轮机中、为了考虑焊接变形问题、隔板采用24毫米厚。这样厚度围带、采用冲孔则根本没有办法。为了解决这一关键问题,大胆地采用了电介加工这一方案。虽然摆在我们面前困难很多、又缺乏电介加工異形 I. INTRODUCTION In the past, the shroud and punching methods of steam turbine partitions were used to limit the thickness of the shroud. Generally, the punch was 4 mm thick and the shroud pitch was not easy to guarantee. In a certain type of steam turbine, in order to consider the problem of welding deformation, the partition is 24 mm thick. This thickness shroud, using punching there is no way. In order to solve this key problem, boldly adopted the dielectric processing program. Although there are many difficulties before us, there is a lack of dielectric processing