High rising speed discharge current pulse for EDM generated by inductive boosting voltage circuit. Issue 1 (2021)

• Record Type: Journal Article
• Authors: Jiang, Lin; Kunieda, Masanori
• Is Part Of: CIRP annals. Volume 70:Issue 1(2021)
• Page Start: 147
• Page End: 150
• Publication Date: 2021
• Subjects: Electrical discharge machining (EDM) -- Material removal -- High rising speed discharge pulse; Production engineering -- Research -- Periodicals; 670.5
• DOI: 10.1016/j.cirp.2021.04.014
• Languages: English
• ISSNs: 0007-8506

Abstract

Abstract: This paper introduces a newly developed EDM pulse generator whose high open voltage for discharge is generated by induced electromotive force using a power supply of only 5 V. The pulse generator can generate short duration and high discharge current pulses. The rising time of discharge current pulses to 5 A can be made shorter than 50 ns with a pulse duration of 200 ns or shorter. The results proved that such discharge current pulse shapes increase material removal volume per discharge and that the higher boosting open voltage facilitates the machining of high resistivity materials.