汽轮机的末级叶片,在长期运行过程中,由于种种原因,常常会产生裂缝、断裂,导致停机停电,影响工农业生产,给国家带来很大的损失。过去,对叶片断裂的处理方法通常是进行更换(对于小裂缝则是采取局部清除),这样,就需要叶片备品,同时由于叶片的拆装工艺较复杂,往往因而延长检修时间。近几年来,我们采用焊接的方法对断裂叶片进行修复,已经在运行的实践中获得一定的效果。采用这种焊接方法,工艺简便,大大缩短工期,提高工效,是一种多快好省的途径,已经引起了各方面的重视和应用。在电厂中,开始是对个别 Turbine last stage blades, in the long run, due to various reasons, often cracks, fractures, resulting in downtime, affecting industrial and agricultural production, to the country a great loss. In the past, blade rupture was usually handled by replacement (for small cracks, it was partially removed). In this case, blade spares were required. At the same time, due to the complicated dismounting process of blades, maintenance time was often extended. In recent years, we have used the welding method to repair the rupture blades and have obtained certain effect in the operation practice. Adopting this welding method, the process is simple, the construction period is greatly shortened, and the work efficiency is improved, which is a way of more speed and better performance and has attracted the attention and application of all aspects. In the power plant, the beginning is individual