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发明公开
CN101363075A 对叶片的榫齿进行集中喷丸的加工方法 无效 - 驳回

对叶片的榫齿进行集中喷丸的加工方法
摘要：
本发明为对叶片的榫齿进行集中喷丸的加工方法。其能够精确控制叶片榫齿各部位的应力，提高叶片榫齿部位的疲劳性能，从而使汽轮机的末级、次末级叶片的使用寿命得以延长。其特征在于：采用数控喷丸机对叶片的榫齿进行集中喷丸，喷丸的工艺参数为压缩空气压力：0.1MPa～0.6MPa、喷枪喷嘴直径：Φ5mm～Φ15mm、喷枪离喷丸表面距离：50mm～300mm、喷枪移动速度：10mm/min～500mm/min、喷枪与喷丸表面夹角：5°～90°、压应力深度控制：0mm～0.5mm、压应力控制：0MPa～800MPa。
摘要（英）：

The invention relates to a centralized shot blasting processing method of a tenon tooth of a blade, which can precisely control stress of various parts of the tenon tooth of the blade and can improve the fatigue property of the tenon tooth parts of the blade, thus prolonging the service life of the last-stage blade and the second last-stage blade of a steam turbine. The processing method is characterized in that: the centralized shot blasting of the tenon tooth of the blade is carried out by adopting a numerical control shot blasting machine. The process parameters of the shot blasting are as follows: the pressure of compressed air is 0.1MPa-0.6MPa, the nozzle diameter of a spray gun is phi 5mm-15mm, the distance between the spray gun and the shot blasting surface is 50mm-300mm, the travel speed of the spray gun is 10mm/min-500mm/min, the included angle between the spray gun and the shot blasting surface is 5-90 degrees, the comprehensive stress depth is controlled within the range of 0mm-0.5mm, and the compressive stress is controlled within the range of 0MPa-800MPa.

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