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Journal of Shenyang Aerospace University >

2024 , Vol. 41 >Issue 5: 34 - 43

DOI: https://doi.org/10.3969/j.issn.2095-1248.2024.05.004

Mechanical and Materials Engineering

Effect on surface quality of selective laser melting of TC4 alloy by ultrasonic assisted magnetic abrasive finishing

  • Guang YANG ,
  • Tao WANG ,
  • Yushi WANG ,
  • Da AN
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  • College of Mechanical and Electrical Engineering，Shenyang Aerospace University，Shenyang 110136，China

Received date: 2024-05-09

  Online published: 2024-12-11

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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 distribution of magnetic flux density under different magnetic pole dimensions and finishing areas.The cavitation 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 surface exhibites fine scratches and the surface roughness is reduced to 0.243 μm.Compared with the magnetic 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.

Key words： ultrasonic assisted magnetic abrasive finishing; selective laser melting; TC4 alloy; surface quality; surface roughness

Cite this article

Guang YANG , Tao WANG , Yushi WANG , Da AN . Effect on surface quality of selective laser melting of TC4 alloy by ultrasonic assisted magnetic abrasive finishing[J]. Journal of Shenyang Aerospace University, 2024 , 41(5) : 34 -43 . DOI: 10.3969/j.issn.2095-1248.2024.05.004

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