The Influence of the Gap Phenomenon on the Occurrence of Consecutive Discharges in WEDM Through High-Speed Video Camera Observation

被引:0
作者
Wang, Jun [1 ]
Sanchez, Jose Antonio [1 ,2 ]
Izquierdo, Borja [2 ]
Ayesta, Izaro [1 ]
机构
[1] Univ Basque Country UPV EHU, Aeronaut Adv Mfg Ctr, CFAA, Biscay Sci & Technol Pk, Bldg 202, Zamudio 48170, Spain
[2] Univ Pais Vasco UPV EHU, Dept Mech Engn, Plaza Torres Quevedo 1, Bilbao 48013, Spain
来源
APPLIED SCIENCES-BASEL | 2024年 / 14卷 / 20期
关键词
WEDM; high-speed video camera; bubble; discharge location; discharge delay time;
D O I
10.3390/app14209475
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The Wire Electrical Discharge Machining (WEDM) process is an accurate method for manufacturing high-added-value components for industry. Continuous developments in the process have resulted in specialized machines used in sectors such as aerospace and biomedical engineering. However, some fundamental aspects of the discharge process remain unresolved. This work aims to study the influence of discharge location and bubble expansion on the occurrence of subsequent discharges. A high-speed video camera observation system was constructed to capture images of each discharge. From the acquired images, an algorithm was devised to determine the discharge location based on grayscale analysis. Moreover, the voltage and current waveforms of the discharges and the framing signals of the high-speed video camera were then obtained using an oscilloscope. Synchronizing the observation images and signals allowed for calculating the delay time for each single discharge. The results indicate that most of the discharges occurred near the boundary of the bubble and during bubble expansion. This finding has been observed for a variety of machining conditions and can be explained by the effect of the debris particles concentrated at the bubble boundary. This study provides useful information for better understanding the discharge process in WEDM.
引用
收藏
页数:14
相关论文
共 19 条
[1]   Comprehensive servo control strategies for flexible and high-efficient wire electric discharge machining. A systematic review [J].
Almeida, Sergio ;
Mo, John ;
Bil, Cees ;
Ding, Songlin ;
Wang, Xiangzhi .
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY, 2021, 71 :7-28
[2]   Thermal Barrier Coatings for High-Temperature Performance of Nickel-Based Superalloys: A Synthetic Review [J].
Barwinska, Izabela ;
Kopec, Mateusz ;
Kukla, Dominik ;
Senderowski, Cezary ;
Kowalewski, Zbigniew L. L. .
COATINGS, 2023, 13 (04)
[3]   Observation of relationship between bubbles and discharge locations in EDM using transparent electrodes [J].
Kitarnura, Tomoo ;
Kunieda, Masanori ;
Abe, Kohzoh .
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY, 2015, 40 :26-32
[4]   Effects of Machining Parameters and Tool Reconditioning on Cutting Force, Tool Wear, Surface Roughness and Burr Formation in Nickel-Based Alloy Milling [J].
Konya, Gabor ;
Kovacs, Zsolt F. .
MATERIALS, 2023, 16 (22)
[5]  
Kunieda M., 1998, Int. J. Electr. Mach, V3, P53
[6]  
Kunieda M., 2011, IJEM, V16, P15, DOI [10.2526/ijem.16.15, DOI 10.2526/IJEM.16.15]
[7]   Bubble flushing effect in micro EDM drilling and its relation with debris [J].
Li, Guodong ;
Natsu, Wataru ;
Yang, Junfeng ;
Yu, Zuyuan .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2022, 305
[8]   Sinking EDM simulation by determining discharge locations based on discharge delay time [J].
Morimoto, Kenji ;
Kunieda, Masanori .
CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2009, 58 (01) :221-224
[9]   High temperature materials for aerospace applications: Ni-based superalloys and γ-TiAl alloys [J].
Perrut, Mikael ;
Caron, Pierre ;
Thomas, Marc ;
Couret, Alain .
COMPTES RENDUS PHYSIQUE, 2018, 19 (08) :657-671
[10]  
Rathod R., 2022, J. Eng. Appl. Sci, V69, P64, DOI [10.1186/s44147-022-00118-z, DOI 10.1186/S44147-022-00118-Z]