Experimental Study on ELID Grinding of Silicon Nitride Ceramics for G5 Class Bearing Balls
This study has focused on analyzing the impact of material characteristics and grinding conditions on the surface roughness in ELID grinding of ceramic materials intended for bearing balls. The main research objective was to examine the feasibility of achieving the required surface roughness for G5...
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MDPI AG
2023-09-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/19/10584 |
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| author | Seung-Min Lee Ha-Neul Kim Jae-Woong Ko Tae-Soo Kwak |
| author_facet | Seung-Min Lee Ha-Neul Kim Jae-Woong Ko Tae-Soo Kwak |
| author_sort | Seung-Min Lee |
| collection | DOAJ |
| description | This study has focused on analyzing the impact of material characteristics and grinding conditions on the surface roughness in ELID grinding of ceramic materials intended for bearing balls. The main research objective was to examine the feasibility of achieving the required surface roughness for G5 class bearing balls through a high-efficiency and high-precision ELID grinding process. Three types of silicon nitride specimens and two types of grinding wheels with cBN and diamond abrasives were prepared for the experiments. An HP (high-pressure) specimen was fabricated through high-temperature and high-pressure sintering at 1700 °C for 2 h, containing a composition of Y<sub>2</sub>O<sub>3</sub> and MgO in Si<sub>3</sub>N<sub>4</sub>, while GPS 1hr and GPS 6hr specimens were prepared using gas-pressure sintering for 1 h and 6 h, respectively. From the experimental results, it has been confirmed through surface morphology and surface roughness analysis that material characteristics and grinding parameters affect the surface roughness of silicon nitride ceramics during the grinding process. The surface ground with a #2000 diamond wheel is at a level that can satisfy the required surface roughness, 0.014 um or less in G5 class bearing balls. Based on the analysis of surface morphology and roughness in grinding processes, the #325 cBN wheel exhibited excellent performance in rough grinding, while the #2000 diamond wheel demonstrated highly effective surface finishing performance, indicating that the combination of these two abrasives can be effectively utilized for high-efficiency and high-precision nanosurface machining of silicon nitride ceramics. |
| first_indexed | 2024-03-10T21:49:45Z |
| format | Article |
| id | doaj.art-9ecc7a925fbc4983944d7de540c5bb87 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T21:49:45Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-9ecc7a925fbc4983944d7de540c5bb872023-11-19T14:01:27ZengMDPI AGApplied Sciences2076-34172023-09-0113191058410.3390/app131910584Experimental Study on ELID Grinding of Silicon Nitride Ceramics for G5 Class Bearing BallsSeung-Min Lee0Ha-Neul Kim1Jae-Woong Ko2Tae-Soo Kwak3School of Mechanical and Material Convergence Engineering, Gyeongsang National University, Jinju 52725, Republic of KoreaEngineering Ceramics Department, Korea Institute of Material Science, Changwon 51508, Republic of KoreaEngineering Ceramics Department, Korea Institute of Material Science, Changwon 51508, Republic of KoreaSchool of Mechanical and Material Convergence Engineering, Gyeongsang National University, Jinju 52725, Republic of KoreaThis study has focused on analyzing the impact of material characteristics and grinding conditions on the surface roughness in ELID grinding of ceramic materials intended for bearing balls. The main research objective was to examine the feasibility of achieving the required surface roughness for G5 class bearing balls through a high-efficiency and high-precision ELID grinding process. Three types of silicon nitride specimens and two types of grinding wheels with cBN and diamond abrasives were prepared for the experiments. An HP (high-pressure) specimen was fabricated through high-temperature and high-pressure sintering at 1700 °C for 2 h, containing a composition of Y<sub>2</sub>O<sub>3</sub> and MgO in Si<sub>3</sub>N<sub>4</sub>, while GPS 1hr and GPS 6hr specimens were prepared using gas-pressure sintering for 1 h and 6 h, respectively. From the experimental results, it has been confirmed through surface morphology and surface roughness analysis that material characteristics and grinding parameters affect the surface roughness of silicon nitride ceramics during the grinding process. The surface ground with a #2000 diamond wheel is at a level that can satisfy the required surface roughness, 0.014 um or less in G5 class bearing balls. Based on the analysis of surface morphology and roughness in grinding processes, the #325 cBN wheel exhibited excellent performance in rough grinding, while the #2000 diamond wheel demonstrated highly effective surface finishing performance, indicating that the combination of these two abrasives can be effectively utilized for high-efficiency and high-precision nanosurface machining of silicon nitride ceramics.https://www.mdpi.com/2076-3417/13/19/10584surface roughnessball bearingsilicon nitride (Si<sub>3</sub>N<sub>4</sub>)ELID grindingnanosurface |
| spellingShingle | Seung-Min Lee Ha-Neul Kim Jae-Woong Ko Tae-Soo Kwak Experimental Study on ELID Grinding of Silicon Nitride Ceramics for G5 Class Bearing Balls Applied Sciences surface roughness ball bearing silicon nitride (Si<sub>3</sub>N<sub>4</sub>) ELID grinding nanosurface |
| title | Experimental Study on ELID Grinding of Silicon Nitride Ceramics for G5 Class Bearing Balls |
| title_full | Experimental Study on ELID Grinding of Silicon Nitride Ceramics for G5 Class Bearing Balls |
| title_fullStr | Experimental Study on ELID Grinding of Silicon Nitride Ceramics for G5 Class Bearing Balls |
| title_full_unstemmed | Experimental Study on ELID Grinding of Silicon Nitride Ceramics for G5 Class Bearing Balls |
| title_short | Experimental Study on ELID Grinding of Silicon Nitride Ceramics for G5 Class Bearing Balls |
| title_sort | experimental study on elid grinding of silicon nitride ceramics for g5 class bearing balls |
| topic | surface roughness ball bearing silicon nitride (Si<sub>3</sub>N<sub>4</sub>) ELID grinding nanosurface |
| url | https://www.mdpi.com/2076-3417/13/19/10584 |
| work_keys_str_mv | AT seungminlee experimentalstudyonelidgrindingofsiliconnitrideceramicsforg5classbearingballs AT haneulkim experimentalstudyonelidgrindingofsiliconnitrideceramicsforg5classbearingballs AT jaewoongko experimentalstudyonelidgrindingofsiliconnitrideceramicsforg5classbearingballs AT taesookwak experimentalstudyonelidgrindingofsiliconnitrideceramicsforg5classbearingballs |