合山发电厂#~4、#~5机转子发生严重裂纹,在国内是第一次,在国外也属罕见。这对汽轮机制造厂和火力发电厂都是一个值得关注的重要问题.本文仅对该转子的裂纹情况、原因及处理的办法作一简单介绍,以饬读者. Heshan Power Plant # ~ 4, # ~ 5 machine rotors serious cracks, is the first time in China, is also rare in foreign countries. This is an important issue that should be paid attention to for steam turbine factory and thermal power plant.This article only gives a brief introduction of the crack condition, the reason and the solution of the rotor in order to readers.