YU Keqiang*,ZHOU Kun,CHEN Yan.Experimental Study on Blisk by Ultrasonic Vibration Assisted MAF[J].Plating & Finishing,2020,(7):42-46.[doi:10.3969/j.issn.1001-3849.2020.07.0090]
超声波辅助磁力研磨整体叶盘试验研究
- Title:
- Experimental Study on Blisk by Ultrasonic Vibration Assisted MAF
- 文献标志码:
- A
- 摘要:
- 针对航空发动机整体叶盘结构复杂和材料难以加工的特性，在磁力研磨技术的基础上引入超声波作为辅助手段。磁性磨粒在磁场力和振动冲击产生的超声脉冲压力的复合作用下，加大了对叶盘表面纹理的去除。结果显示：加工前叶盘表面粗糙度值为Ra 1.38 μm，单纯磁力研磨后表面粗糙度值降至Ra 0.52 μm，超声波辅助磁力研磨后表面粗糙度值降至Ra 0.18 μm。通过电镜观测叶盘表面形貌，纹理基本去除，表面更加细密、均匀。
- Abstract:
- In view of the characteristics of aero engine blisk such as complicated structure and difficult to processing, the ultrasonic wave was introduced as an auxiliary method on the basis of magnetic abrasive finishing (MAF) technology. Under the combined action of the magnetic field force and the ultrasonic pulse pressure generated by the axial vibration impact on the magnetic abrasive, the removal amount of the surface texture of the blisk was increased. The results showed that surface roughness value was reduced from Ra 1.38 μm to Ra 0.52 μm by pure MAF and Ra 1.38 μm to Ra 0.18 μm by compound processing. By observing the surface topography of the blisk by electron microscope, the surface texture was completely removed and the surface became more fine and even.
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备注/Memo
收稿日期： 2019-11-21；修回日期： 2020-03-08
通信作者： 于克强，asykq@126.com
基金项目： 辽宁省教育厅项目（2016HZZD02）