Ultrasonic Polishing of Electric Discharge Machined Surface Using Al₂O₃ Suspension

Abstract:

The aim of this work is to investigate the possibility of improvement of surface roughness in the wire-EDMed sample by usinig ultrasonic wave and abrasive particle suspension. For this study, two-type ultrasonic polishing methods were used. Removal of the white layers on surface of EDMed sample depended largely on the movement of the suspended particles : the white layers are removed by the impact of free moving particles due to ultrasonic wave, so-called micro chipping mechanism. Even though the surface roughness was improved very slowly, 3-dimensional fine polishing was achieved in wire-EDMed micro PIM molds. These results indicated that micro polishing by ultrasonic wave using suspension is applicable to improvement of surface roughness of micro parts with 3-dimensional complex shape.

• Periodical: Advanced Materials Research (Volumes 291-294)
• Pages: 53-56
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.291-294.53
• Online since: July 2011
• Authors: Won Sik Lee, Jung Sik Seo, Se Hyun Ko, Jin Man Jang, Bermha Cha, Seong Ho Son
• Keywords: Electric Discharge Machining (EDM), Micro Part, Micro Particle Suspension, Surface Roughness (SR), Ultrasonic Polishing, White Layer

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