An analysis of the debris in ultrasonic-assisted electrical discharge machining

This paper endeavours to examine the influence of ultrasonic irradiation of the spark gap on electrical discharge machining debris. An analysis using scanning electron microscopy shows that most of the particles are globular in shape with slight ellipticity. Except for a few isolated hollow particle...

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Bibliographic Details
Published in:Wear 1987-06, Vol.117 (2), p.241-250
Main Authors: Murti, V.S.R., Philip, P.K.
Format: Article
Language:English
Subjects:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Cutting
Exact sciences and technology
Materials science
Metals, semimetals and alloys
Metals. Metallurgy
Other machining methods
Physics
Production techniques
Specific materials
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Summary:This paper endeavours to examine the influence of ultrasonic irradiation of the spark gap on electrical discharge machining debris. An analysis using scanning electron microscopy shows that most of the particles are globular in shape with slight ellipticity. Except for a few isolated hollow particles, the rest are solid. There is evidence of the collisions of particles in the form of splats, attached satellites, cracks and dents, etc. Compositional analysis showed pickup of tool electrode material by the debris. The size distribution was near normal, indicating the stochastic nature of particle formation. The pulse characteristics significantly influence the particle size. The influence of ultrasonics was highly significant with markedly high spheroidicity, size, copper pickup and incidence of collisions.
ISSN:0043-1648
1873-2577
DOI:10.1016/0043-1648(87)90258-4