A Preliminary Study of the Erosion Process in Micro-Machining of Glasses with a Low Pressure Slurry Jet |
| Journal |
Key Engineering Materials (Volumes 389 - 390) |
| Volume |
Advances in Abrasive Technology XI |
| Edited by |
Tsunemoto Kuriyagawa, Libo Zhou, Jiwang Yan and Nobuhito Yoshihara |
| Pages |
375-380 |
| DOI |
10.4028/www.scientific.net/KEM.389-390.375 |
| Online since |
September, 2008 |
| Authors |
Thai Nguyen, King Pang, Jun Wang |
| Keywords |
Abrasive Jet, Erosion, Micro Hole Feature, Micro Machining, Microjet, Surface Characteristic, Wavy Pattern |
| Abstract |
The erosion process in micro-machining of brittle glasses using a low pressure slurry jet
is discussed. The process capability of the technique is assessed by examining the machined surface
integrity in relation to fluid flow dynamics in micro-hole generations. The holes produced are
characterised by a “W” shape in the cross section, while the surface morphology is distinguished by
three zones associated with the fluid flow behaviour, i.e. a direct impact zone, a wavy zone and an
accumulation zone. The surfaces appear to be smooth and without cracks, indicating a
predominance of the ductile mode erosion process. With the increase of pressure, the erosion rates
can be enhanced as a result of the expending of the accumulation zone while the outer diameter of
the holes remains unchanged. This study shows that this technique can be used for micro-machining
with high surface quality, and provides an essential understanding for further research in the
avenue. |
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