Investigating the Microscopic Mechanism of Ultrasonic-Vibration-Assisted-Pressing of WC-Co Powder by Simulation
The ultrasonic-vibration-assisted pressing process can improve the fluidity and the uneven distribution of density and particle size of WC-Co powder. However, the microscopic mechanism of ultrasonic vibration on the powder remains unclear. In this paper, WC particles with diameter 5 μm and Co partic...
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MDPI AG
2023-07-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/14/5199 |
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| author | Yuhang Chen Yun Wang Lirong Huang Binbin Su Youwen Yang |
| author_facet | Yuhang Chen Yun Wang Lirong Huang Binbin Su Youwen Yang |
| author_sort | Yuhang Chen |
| collection | DOAJ |
| description | The ultrasonic-vibration-assisted pressing process can improve the fluidity and the uneven distribution of density and particle size of WC-Co powder. However, the microscopic mechanism of ultrasonic vibration on the powder remains unclear. In this paper, WC particles with diameter 5 μm and Co particles with diameter 1.2 μm were simulated by three-dimensional spherical models with the aid of the Python secondary development. At the same time, the forming process of the powder at the mesoscale is simulated by virtue of the finite element analysis software ABAQUS. In the simulation process, the vibration amplitude was set to 1, 2, and 3 μm. Their influence on the fluidity, the filling density, and the stress distribution of WC-Co powder when the ultrasonic vibration was applied to the conventional pressing process was investigated. The simulation results show that the ultrasonic vibration amplitude has a great influence on the density of the compact. With an increase in the ultrasonic amplitude, the compact density also increases gradually, and the residual stress in the billet decreases after the compaction. From the experimental results, the size distribution of the billet is more uniform, the elastic after-effect is reduced, the dimensional instability is improved, and the density curves obtained by experimentation and simulation are within a reasonable error range. |
| first_indexed | 2024-03-11T00:52:11Z |
| format | Article |
| id | doaj.art-d877b001c5aa4f50b5390bfff9662e76 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T00:52:11Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-d877b001c5aa4f50b5390bfff9662e762023-11-18T20:19:30ZengMDPI AGMaterials1996-19442023-07-011614519910.3390/ma16145199Investigating the Microscopic Mechanism of Ultrasonic-Vibration-Assisted-Pressing of WC-Co Powder by SimulationYuhang Chen0Yun Wang1Lirong Huang2Binbin Su3Youwen Yang4School of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaSchool of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaSchool of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaJiangxi Province Key Laboratory of Maglev Technology, School of Electrical Engineering and Automation, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaSchool of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, ChinaThe ultrasonic-vibration-assisted pressing process can improve the fluidity and the uneven distribution of density and particle size of WC-Co powder. However, the microscopic mechanism of ultrasonic vibration on the powder remains unclear. In this paper, WC particles with diameter 5 μm and Co particles with diameter 1.2 μm were simulated by three-dimensional spherical models with the aid of the Python secondary development. At the same time, the forming process of the powder at the mesoscale is simulated by virtue of the finite element analysis software ABAQUS. In the simulation process, the vibration amplitude was set to 1, 2, and 3 μm. Their influence on the fluidity, the filling density, and the stress distribution of WC-Co powder when the ultrasonic vibration was applied to the conventional pressing process was investigated. The simulation results show that the ultrasonic vibration amplitude has a great influence on the density of the compact. With an increase in the ultrasonic amplitude, the compact density also increases gradually, and the residual stress in the billet decreases after the compaction. From the experimental results, the size distribution of the billet is more uniform, the elastic after-effect is reduced, the dimensional instability is improved, and the density curves obtained by experimentation and simulation are within a reasonable error range.https://www.mdpi.com/1996-1944/16/14/5199WC-Co powderultrasonic-vibration-assisted pressing processfinite element simulationpressed billet density |
| spellingShingle | Yuhang Chen Yun Wang Lirong Huang Binbin Su Youwen Yang Investigating the Microscopic Mechanism of Ultrasonic-Vibration-Assisted-Pressing of WC-Co Powder by Simulation Materials WC-Co powder ultrasonic-vibration-assisted pressing process finite element simulation pressed billet density |
| title | Investigating the Microscopic Mechanism of Ultrasonic-Vibration-Assisted-Pressing of WC-Co Powder by Simulation |
| title_full | Investigating the Microscopic Mechanism of Ultrasonic-Vibration-Assisted-Pressing of WC-Co Powder by Simulation |
| title_fullStr | Investigating the Microscopic Mechanism of Ultrasonic-Vibration-Assisted-Pressing of WC-Co Powder by Simulation |
| title_full_unstemmed | Investigating the Microscopic Mechanism of Ultrasonic-Vibration-Assisted-Pressing of WC-Co Powder by Simulation |
| title_short | Investigating the Microscopic Mechanism of Ultrasonic-Vibration-Assisted-Pressing of WC-Co Powder by Simulation |
| title_sort | investigating the microscopic mechanism of ultrasonic vibration assisted pressing of wc co powder by simulation |
| topic | WC-Co powder ultrasonic-vibration-assisted pressing process finite element simulation pressed billet density |
| url | https://www.mdpi.com/1996-1944/16/14/5199 |
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