Experimental Investigation on the Surface Formation Mechanism of NdFeB during Diamond Wire Sawing
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2023-02-11 |
| Journal | Materials |
| Authors | Bin Wu, Zhenyu Zhang, Junyuan Feng, Fanning Meng, Shengzuo Wan |
| Institutions | Hangzhou Dianzi University, Dalian University of Technology |
| Citations | 20 |
| Analysis | Full AI Review Included |
ERROR: File too large (13.7MB)
View Original Abstract
Diamond wire sawing is widely used in processing NdFeB rare earth permanent magnets. However, it induces periodic saw marks and fracture chipping pits, which severely affect the flatness and surface quality of the products. In this study, the lateral motion of the diamond wire was monitored to determine the surface formation mechanism. Then, a white light interferometer and an SEM were used to observe the sawed surface profile. Finally, the surface quality was quantitatively studied by identifying the area rate of fracture chipping pits with an image recognition MATLAB script. According to the observation results, the calculation formula of PV which is related to the process parameters was deduced. Additionally, by combining the fracture rate and wire vibration, a novel method was proposed to investigate the optimal process parameters. It can be found that the surface quality sawed at P = 0.21 MPa, vf = 0.2 mm/min, and vs = 1.8 m/s remains better than when sawed at P = 0.15 MPa, vf = 0.1 mm/min, and vs = 1.8 m/s, which means the sawing efficiency can be doubled under such circumstances, i.e., when the surface quality remains the same.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2020 - Perspective and Prospects for Rare Earth Permanent Magnets [Crossref]
- 2021 - Achieving Sustainable Development Goals in rare earth magnets production: A review on state of the art and SWOT analysis [Crossref]
- 2017 - Neodymium as the main feature of permanent magnets from hard disk drives (HDDs) [Crossref]
- 2016 - Prospective analysis of the flows of certain rare earths in Europe at the 2020 horizon [Crossref]
- 1998 - Permanent magnets based on R-Fe-B and R-Fe-C alloys [Crossref]
- 2021 - Improved microstructure and mechanical properties for sintered NdFeB permanent magnet/steel soldered joints by Nd addition [Crossref]
- 2021 - Joining of sintered NdFeB permanent magnet to steel using novel Zn-Sn-Bi-Nd alloy: Microstructure and soldering mechanism [Crossref]
- 2011 - Current status and recent topics of rare-earth permanent magnets [Crossref]
- 2022 - Review of resource and recycling of silicon powder from diamond-wire sawing silicon waste [Crossref]