Investigation of Machining Characteristics in Electrical Discharge Machining Using a Slotted Electrode with Internal Flushing
In die-sinking electrical discharge machining (EDM), it is challenging to implement internal flushing, mainly because it is easy to produce residual material columns on the workpiece cavity’s bottom surface, affecting the processing quality and efficiency. In order to solve this problem, the interna...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/14/11/1989 |
| _version_ | 1827639261412720640 |
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| author | Minghao Gao Ming Liu Jianqing Han Qinhe Zhang |
| author_facet | Minghao Gao Ming Liu Jianqing Han Qinhe Zhang |
| author_sort | Minghao Gao |
| collection | DOAJ |
| description | In die-sinking electrical discharge machining (EDM), it is challenging to implement internal flushing, mainly because it is easy to produce residual material columns on the workpiece cavity’s bottom surface, affecting the processing quality and efficiency. In order to solve this problem, the internal flushing slotted electrode EDM technology was proposed. The slotted electrode was designed, and its preparation method was described. The influence of pulse width, pulse interval, and flushing pressure on the performance of the internal flushing slotted electrode EDM was studied using single-factor experiments. The experimental results indicate that, with the increase in pulse width, the material removal rate (MRR) increases first and then decreases, while the electrode wear rate (EWR) and the relative electrode wear rate (REWR) decrease gradually; with the increase in pulse interval, the MRR decreases, while the EWR and the REWR increase gradually; with the increase in flushing pressure, the MRR increases first and then decreases, while the EWR and the REWR increase gradually. When the slotted electrode is used for continuous internal flushing EDM, the appropriate pulse width, flushing pressure, and smaller pulse interval can improve the MRR and reduce the EWR and the REWR. |
| first_indexed | 2024-03-09T16:36:06Z |
| format | Article |
| id | doaj.art-49cec27475d14cbe9545999c21c25fd8 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-09T16:36:06Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-49cec27475d14cbe9545999c21c25fd82023-11-24T14:56:07ZengMDPI AGMicromachines2072-666X2023-10-011411198910.3390/mi14111989Investigation of Machining Characteristics in Electrical Discharge Machining Using a Slotted Electrode with Internal FlushingMinghao Gao0Ming Liu1Jianqing Han2Qinhe Zhang3Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University, Jinan 250061, ChinaKey Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University, Jinan 250061, ChinaKey Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University, Jinan 250061, ChinaKey Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University, Jinan 250061, ChinaIn die-sinking electrical discharge machining (EDM), it is challenging to implement internal flushing, mainly because it is easy to produce residual material columns on the workpiece cavity’s bottom surface, affecting the processing quality and efficiency. In order to solve this problem, the internal flushing slotted electrode EDM technology was proposed. The slotted electrode was designed, and its preparation method was described. The influence of pulse width, pulse interval, and flushing pressure on the performance of the internal flushing slotted electrode EDM was studied using single-factor experiments. The experimental results indicate that, with the increase in pulse width, the material removal rate (MRR) increases first and then decreases, while the electrode wear rate (EWR) and the relative electrode wear rate (REWR) decrease gradually; with the increase in pulse interval, the MRR decreases, while the EWR and the REWR increase gradually; with the increase in flushing pressure, the MRR increases first and then decreases, while the EWR and the REWR increase gradually. When the slotted electrode is used for continuous internal flushing EDM, the appropriate pulse width, flushing pressure, and smaller pulse interval can improve the MRR and reduce the EWR and the REWR.https://www.mdpi.com/2072-666X/14/11/1989electrical discharge machiningslotted electrodeinternal flushingmachining characteristics |
| spellingShingle | Minghao Gao Ming Liu Jianqing Han Qinhe Zhang Investigation of Machining Characteristics in Electrical Discharge Machining Using a Slotted Electrode with Internal Flushing Micromachines electrical discharge machining slotted electrode internal flushing machining characteristics |
| title | Investigation of Machining Characteristics in Electrical Discharge Machining Using a Slotted Electrode with Internal Flushing |
| title_full | Investigation of Machining Characteristics in Electrical Discharge Machining Using a Slotted Electrode with Internal Flushing |
| title_fullStr | Investigation of Machining Characteristics in Electrical Discharge Machining Using a Slotted Electrode with Internal Flushing |
| title_full_unstemmed | Investigation of Machining Characteristics in Electrical Discharge Machining Using a Slotted Electrode with Internal Flushing |
| title_short | Investigation of Machining Characteristics in Electrical Discharge Machining Using a Slotted Electrode with Internal Flushing |
| title_sort | investigation of machining characteristics in electrical discharge machining using a slotted electrode with internal flushing |
| topic | electrical discharge machining slotted electrode internal flushing machining characteristics |
| url | https://www.mdpi.com/2072-666X/14/11/1989 |
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