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A Preliminary Study of the Erosion Process in Micro-Machining of Glasses with a Low Pressure Slurry Jet

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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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Periodical:

Key Engineering Materials (Volumes 389-390)

Pages:

375-380

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.389-390.375

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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

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© 2009 Trans Tech Publications Ltd. All Rights Reserved

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