沈阳航空航天大学学报2024，Vol.41Issue(5)：34-43,10.DOI:10.3969/j.issn.2095-1248.2024.05.004
超声辅助磁力研磨对选区激光熔化TC4合金表面质量的影响
Effect on surface quality of selective laser melting of TC4 alloy by ultra-sonic assisted magnetic abrasive finishing
摘要
Abstract
To improve the surface quality of TC4 alloy prepared by selective laser melting,the ultrasonic assisted magnetic abrasive finishing technology for polishing was adopted.Simulated the size and distri-bution of magnetic flux density under different magnetic pole dimensions and finishing areas.The cavi-tation bubble in the composite field force was analysed,the magnetic field on the cavitation effect on the influence mechanism was studied.The changes in surface morphology of the specimen before and after applying ultrasonic vibration were analyzed.The influence of amplitude,finishing rotate speed and finishing time on surface roughness were studied.The results show that as the diameter and height of the magnetic poles increase,the magnetic induction intensity increases and the distribution of magnetic flux density gradually changes from uneven to uniform.The finishing effect is better at the position of 80 mm,with an average magnetic field force of 17.12 mN and a surface roughness of 0.673 μm.After applying ultrasonic vibration,the original surface bumps and defects are completely removed,the sur-face exhibites fine scratches and the surface roughness is reduced to 0.243 μm.Compared with the mag-netic abrasive finishing process,the surface roughness is reduced by 60%.The suppression effect of the magnetic field on the cavitation effect reduces the energy released when the cavitation bubble collap-ses,thus reducing the damage caused by the cavitation effect on the surface.关键词
超声辅助磁力研磨/选区激光熔化/TC4合金/表面质量/表面粗糙度Key words
ultrasonic assisted magnetic abrasive finishing/selective laser melting/TC4 alloy/surface quality/surface roughness分类
矿业与冶金引用本文复制引用
杨光,王涛,王雨时,安达..超声辅助磁力研磨对选区激光熔化TC4合金表面质量的影响[J].沈阳航空航天大学学报,2024,41(5):34-43,10.基金项目
国家重点研发计划项目(项目编号:2022YFB4602202) （项目编号:2022YFB4602202）
辽宁省教育厅项目(项目编号:LJKQZ20222269) （项目编号:LJKQZ20222269）
航空制造工艺数字化国防重点学科实验室项目(项目编号:SHSYS202250) （项目编号:SHSYS202250）
