The Numerical and Experimental Investigation of Particle Size Distribution Produced by an Electrical Discharge Process
The vague influence of thermal action of electrical discharge on size distribution of metallic powders hinders the adjustability of powder quality. Due to the small gap, short discharge on-time, uncertain discharge point, and strong light interference, direct observation of preparation is difficult...
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MDPI AG
2021-01-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/2/287 |
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| author | Faming Lin Yifan Liu Xianglong Li Congqiang Bai |
| author_facet | Faming Lin Yifan Liu Xianglong Li Congqiang Bai |
| author_sort | Faming Lin |
| collection | DOAJ |
| description | The vague influence of thermal action of electrical discharge on size distribution of metallic powders hinders the adjustability of powder quality. Due to the small gap, short discharge on-time, uncertain discharge point, and strong light interference, direct observation of preparation is difficult to carry out. Herein, the multi-physics coupling finite element method (FEM) was applied to numerically investigate the relationship between size distribution and thermal action. Through modeling of thermal transformation and heat distribution on the surface of electrode, temperature of the electrode is found to be decided by the latent heat and the distribution of heat point obeys the normal distribution, which corresponds with experimental results. Finally, the vapor film to droplet fragmentation theory was proposed to explain the phenomenon of normal distribution. The research results provide theoretical support for the preparation of metallic powder by electrical discharge, and also play a guiding role in optimizing the process parameters in the actual preparation process to tune the size distribution. |
| first_indexed | 2024-03-09T05:37:35Z |
| format | Article |
| id | doaj.art-45090c65cd85433ba52854d7d249ae93 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T05:37:35Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-45090c65cd85433ba52854d7d249ae932023-12-03T12:27:05ZengMDPI AGMaterials1996-19442021-01-0114228710.3390/ma14020287The Numerical and Experimental Investigation of Particle Size Distribution Produced by an Electrical Discharge ProcessFaming Lin0Yifan Liu1Xianglong Li2Congqiang Bai3School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610065, ChinaThe Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Chengdu 610065, ChinaSchool of Mechanical Engineering, Sichuan University, Chengdu 610065, ChinaBeijing Sheenline Co., Ltd., Beijing 100089, ChinaThe vague influence of thermal action of electrical discharge on size distribution of metallic powders hinders the adjustability of powder quality. Due to the small gap, short discharge on-time, uncertain discharge point, and strong light interference, direct observation of preparation is difficult to carry out. Herein, the multi-physics coupling finite element method (FEM) was applied to numerically investigate the relationship between size distribution and thermal action. Through modeling of thermal transformation and heat distribution on the surface of electrode, temperature of the electrode is found to be decided by the latent heat and the distribution of heat point obeys the normal distribution, which corresponds with experimental results. Finally, the vapor film to droplet fragmentation theory was proposed to explain the phenomenon of normal distribution. The research results provide theoretical support for the preparation of metallic powder by electrical discharge, and also play a guiding role in optimizing the process parameters in the actual preparation process to tune the size distribution.https://www.mdpi.com/1996-1944/14/2/287electrical dischargethermal fragmentationsize distribution |
| spellingShingle | Faming Lin Yifan Liu Xianglong Li Congqiang Bai The Numerical and Experimental Investigation of Particle Size Distribution Produced by an Electrical Discharge Process Materials electrical discharge thermal fragmentation size distribution |
| title | The Numerical and Experimental Investigation of Particle Size Distribution Produced by an Electrical Discharge Process |
| title_full | The Numerical and Experimental Investigation of Particle Size Distribution Produced by an Electrical Discharge Process |
| title_fullStr | The Numerical and Experimental Investigation of Particle Size Distribution Produced by an Electrical Discharge Process |
| title_full_unstemmed | The Numerical and Experimental Investigation of Particle Size Distribution Produced by an Electrical Discharge Process |
| title_short | The Numerical and Experimental Investigation of Particle Size Distribution Produced by an Electrical Discharge Process |
| title_sort | numerical and experimental investigation of particle size distribution produced by an electrical discharge process |
| topic | electrical discharge thermal fragmentation size distribution |
| url | https://www.mdpi.com/1996-1944/14/2/287 |
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