Advances in Manufacturing ›› 2024, Vol. 12 ›› Issue (4): 798-809.doi: 10.1007/s40436-023-00480-y

• • 上一篇    

Study of atomized discharge ablation-chemical composite machining of SiCp/Al

Xiu-Lei Yue, Zhi-Dong Liu, Shun-Cheng Zhou, Zi-Long Feng   

  1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, People's Republic of China
  • 收稿日期:2023-03-16 修回日期:2023-05-09 发布日期:2024-12-06
  • 通讯作者: Zhi-Dong Liu,E-mail:liutim@nuaa.edu.cn E-mail:liutim@nuaa.edu.cn
  • 作者简介:Xiu-Lei Yue is a master student at College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics. His research topics are related to non-traditional machining. Zhi-Dong Liu is a professor at College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics. He is the executive director of China Non-Traditional Machining Society, the vice chairman of WEDM Committee, and the chairman of the 6th Jiangsu Non-Traditional Machining Society. His research field is mainly in non-traditional machining, including: 1. High efficiency, precision EDM wire cutting technology; 2. Semiconductor precision electric machining technology; 3. Discharge induced ablation processing technology; 4. EDM additive manufacturing and repair technology; 5. Laser nanocomposite coating technology; 6. Jet electrodeposition technology of functional materials. Shun-Cheng Zhou is a master student at College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics. His research topics are related to non-traditional machining. Zi-Long Feng is a master student at College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics. His research topics are related to non-traditional machining.
  • 基金资助:
    The authors acknowledge the financial support provided by the National Natural Science Foundation of China (Grant No. 51975290).

Study of atomized discharge ablation-chemical composite machining of SiCp/Al

Xiu-Lei Yue, Zhi-Dong Liu, Shun-Cheng Zhou, Zi-Long Feng   

  1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, People's Republic of China
  • Received:2023-03-16 Revised:2023-05-09 Published:2024-12-06
  • Contact: Zhi-Dong Liu,E-mail:liutim@nuaa.edu.cn E-mail:liutim@nuaa.edu.cn
  • Supported by:
    The authors acknowledge the financial support provided by the National Natural Science Foundation of China (Grant No. 51975290).

摘要: Electrical discharge-induced ablation machining utilizes the significant chemical energy released by the combustion of oxygen with metals to remove materials, thereby greatly enhancing the material removal rate (MRR). However, in the case of discharge ablation machining of silicon carbide particle-reinforced aluminum matrix composites (SiCp/Al), the effect of oxygen can easily result in the formation of poorly conductive oxides, which in turn affect the machining stability and adversely impact the MRR and quality of the machining surface. To address this problem, this study proposes the use of sodium carbonate (Na2CO3) solution as the atomization medium to chemically dissolve the oxide during processing to achieve the effect of atomized discharge ablation-chemical composite processing. The study found that the Na2CO3 solution facilitated high-temperature chemical etching behavior in the SiCp/Al atomized discharge ablation process. The Na2CO3 solution reacted chemically with and etched away the recalcitrant oxide that formed in the SiCp/Al process area during machining, thereby ensuring efficient and continuous electrical discharge ablation machining. We applied the atomized discharge ablation-chemical composite machining method to mill SiCp/Al. The experimental results showed that the MRR was 2.66 times higher than that of electrical discharge machining (EDM) and 1.98 times higher than that of conventional atomized discharge ablation milling. Moreover, the relative electrode wear ratio was reduced by 76.01% compared with that of EDM and 82.30% compared with that of conventional atomized discharge ablation machining.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-023-00480-y

关键词: Electrical discharge ablation machining (EDAM), Atomization medium, SiCp/Al, Composite machining, Material removal rate (MRR), Electrode loss

Abstract: Electrical discharge-induced ablation machining utilizes the significant chemical energy released by the combustion of oxygen with metals to remove materials, thereby greatly enhancing the material removal rate (MRR). However, in the case of discharge ablation machining of silicon carbide particle-reinforced aluminum matrix composites (SiCp/Al), the effect of oxygen can easily result in the formation of poorly conductive oxides, which in turn affect the machining stability and adversely impact the MRR and quality of the machining surface. To address this problem, this study proposes the use of sodium carbonate (Na2CO3) solution as the atomization medium to chemically dissolve the oxide during processing to achieve the effect of atomized discharge ablation-chemical composite processing. The study found that the Na2CO3 solution facilitated high-temperature chemical etching behavior in the SiCp/Al atomized discharge ablation process. The Na2CO3 solution reacted chemically with and etched away the recalcitrant oxide that formed in the SiCp/Al process area during machining, thereby ensuring efficient and continuous electrical discharge ablation machining. We applied the atomized discharge ablation-chemical composite machining method to mill SiCp/Al. The experimental results showed that the MRR was 2.66 times higher than that of electrical discharge machining (EDM) and 1.98 times higher than that of conventional atomized discharge ablation milling. Moreover, the relative electrode wear ratio was reduced by 76.01% compared with that of EDM and 82.30% compared with that of conventional atomized discharge ablation machining.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-023-00480-y

Key words: Electrical discharge ablation machining (EDAM), Atomization medium, SiCp/Al, Composite machining, Material removal rate (MRR), Electrode loss