喷丸强化处理对核电汽轮机低压叶片表面残余应力的影响

摘要

Surface treatment of LP blade of nuclear steam turbine was carried out by shot peening. The surface residual stress af-fected by shot peening was studied. The result showed that shot peening could improve and homogenize the surface residual com-pressive stress obviously and there was no microcrack.%文章采用喷丸强化处理的方法对核电汽轮机低压叶片进行了表面处理，研究了喷丸强化处理对叶片表面残余应力的影响。实验结果表明：喷丸强化处理能够显著提高叶片表面的残余压应力并使残余压应力分布较均匀且不会在叶片表面形成微裂纹等有害缺陷。