张鹏,孙玉利,王燎原,陈法宇,盛一.SLM成形打印件振动辅助磁力研磨试验[J].表面技术,2022,51(7):245-252, 273.
ZHANG Peng,SUN Yu-li,WANG Liao-yuan,CHEN Fa-yu,SHENG Yi.Experimental on Vibration-assisted Magnetic Abrasive Finishing of Printed Workpiece Formed by SLM[J].Surface Technology,2022,51(7):245-252, 273 |
| SLM成形打印件振动辅助磁力研磨试验 |
| Experimental on Vibration-assisted Magnetic Abrasive Finishing of Printed Workpiece Formed by SLM |
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| DOI：10.16490/j.cnki.issn.1001-3660.2022.07.024 |
| 中文关键词: 选区激光熔化 未熔融粉末 振动辅助 磁力研磨 表面粗糙度降低率 表面形貌 |
| 英文关键词:selective laser melting unfused powder vibration-assisted magnetic abrasive finishing surface roughness reduction rate surface morphology |
| 基金项目:南京市科技计划–国际联合研发项目(202002047) |
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| Author | Institution |
| ZHANG Peng | College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| SUN Yu-li | College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| WANG Liao-yuan | College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| CHEN Fa-yu | College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| SHENG Yi | Nanjing Xinghe Precision Intelligent Manufacturing Research Institute, Nanjing 211106, China |
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| 中文摘要: |
| 目的 研究使用振动辅助磁力研磨去除选区激光熔化(SLM)成形打印件表面的未熔融粉末时，各加工参数对试样表面粗糙度降低率和表面形貌的影响。方法 结合波导管工件，采用SLM成形打印AlSi10Mg试样，并利用自行研制的振动辅助磁力研磨装置进行加工间隙、磁极转速、振动频率、加工时间等4个因素各5个水平的单因素试验，以表面粗糙度降低率为评价指标，探究各加工因素对试样表面粗糙度降低率和表面形貌的影响规律。结果 对于采用选区激光熔化成形的试样来说，当加工间隙从3 mm增大到7 mm时，试样的表面粗糙度降低率显著降低，最大降低率为84.7%，最小降低率为6%。当加工间隙为3 mm时，试样表面的未熔融粉末基本去除，表面较平整。当磁极转速从200 r/min增大到1 000 r/min时，表面粗糙度降低率先增大后趋于稳定，在转速为200 r/min时表面粗糙度降低率最小(24.3%)。当转速达到400 r/min甚至更高时，表面粗糙度降低率趋于稳定，表面粗糙度降低率保持在80%左右。表面粗糙度降低率随着振动频率增大的变化情况较为复杂，但是总体呈现先增大后减小的趋势，并且在振动频率为15 Hz时，表面粗糙度降低率最大(84.7%)。当加工时间从10 min增大到50 min时，表面粗糙度降低率呈现先增大后减小的变化趋势，在加工时间为40 min时，表面粗糙度降低率最大(81.7%)。结论 加工间隙、磁极转速、振动频率和加工时间对表面粗糙度降低率都有不同程度的影响，SLM成形的试样经过振动辅助磁力研磨之后，表面粗糙度显著降低，表面未熔融粉末得到有效去除。 |
| 英文摘要: |
| The forming and inner surface polishing of workpieces with complex internal cavity structures has always been a problem that troubles the academic community. Complex parts can be formed by metal additive manufacturing technology, but unfused powder remainsand the surface is very rough, which seriously affects the workpieces' performance. In this paper, the influence of vibration-assisted magnetic abrasive and polishing parameters on the processing results during polishing is studied for the polishing of irregular waveguide internal surfaces with complex internal cavities formed by selective laser fusion coagulation. |
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