Material Removal Mechanisms of Cemented Carbides Machined by Ultrasonic Vibration Assisted EDM in Gas Medium
首发时间:2008-04-08
Abstract:A new electrical discharge machining (EDM) technology-tool electrode Ultrasonic vibration assisted electrical discharge machining in gas medium (UEDM in gas) is proposed and its principle is introduced. Relevant experimental equipment was designed by which a series of experiments of machining cemented carbide material were carried out. The mechanisms of cemented carbide material removal are discussed in detail through observing and analyzing the microstructures of machined surface. Five material removal mechanisms of cemented carbides machined by UEDM in gas were proposed, which are melting and evaporation, oxidation and decomposition, spalling, the force of high pressure gas and affection of ultrasonic vibration etc.
keywords: material removal, cemented carbide, ultrasonic vibration, EDM, gas
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