325MW空冷汽轮机低压缸末级动叶片Z型拉筋凸台及拉筋孔的加工

The Machining of the Z Type Lace Convex Table for the Final Blade of LP Casing used for 325MW Air-cooled Turbine as well as the Lacing Hole

论述了 3 2 5MW空冷汽轮机低压缸第 6级 (末级 )动叶片上结构新颖、型面构成复杂的Z型拉筋凸台及凸台拉筋孔的加工工艺 ,并结合工厂的实际情况 ,分别对叶片内、背弧拉筋凸台的型线、凸台端面以及拉筋孔的加工进行了详细的分析研究 ,提出了切实可行的加工工艺方案。

This article has described the machining process for the Z type lace convex table and the lacing hole of the final stage blade (level 6) of the LP casing used for 325MW air-cooled turbine,and based on the actual situation,the machining of the inner blade,the shape of the lacing convex table and its end section as well as the lacing hole has been analyzed in detail,the reliable machining process has been set forth.