TY - JOUR
T1 - Blind-hole drilling of Al2O3/6061Al composite using rotary electro-discharge machining
AU - Wang, Che Chung
AU - Yan, Biing Hwa
N1 - Funding Information:
The author would like to thank the National Science Council of the Republic of China for financially supporting this research under Contract No. NSC 88-2216-E-008-008. Dr. J.H. Shyong, Dr. L.K. Pan and Dr. C.C. Ma are also appreciated for providing technical information regarding the Al 2 O 3 /6061Al composite.
PY - 2000/5/15
Y1 - 2000/5/15
N2 - This work optimizes the blind-hole drilling of Al2O3/6061Al composite using rotary electro-discharging machining by using Taguchi methodology. Experimental results confirm that the revised copper electrode with an eccentric through-hole has the optimum performance for machining from various aspects. Three observed values, MRR, EWR, and SR, verify this optimization of the machining technique. In addition, seven independent parameters are chosen as variables in evaluating the Taguchi method and are categorized into two groups: (1) electrical parameters, e.g., polarity, peak current, pulse duration, and powder supply voltage, and (2) non-electrical parameters, e.g., rotational speed of the electrode, injection flushing pressure of the dielectric fluid, and the number of eccentric through-holes in the electrode. Moreover, analysis of the Taguchi method reveals that the electrical group has a more significant effect than the non-electrical group on the machining characteristics. Furthermore, either the polarity or the peak current most prominently affects the MRR, SR or EWR amongst all of the parameters, whereas none of the non-electrical group has an equal affect. Also derived herein are semi-empirical equations that contain all of the machining characteristics.
AB - This work optimizes the blind-hole drilling of Al2O3/6061Al composite using rotary electro-discharging machining by using Taguchi methodology. Experimental results confirm that the revised copper electrode with an eccentric through-hole has the optimum performance for machining from various aspects. Three observed values, MRR, EWR, and SR, verify this optimization of the machining technique. In addition, seven independent parameters are chosen as variables in evaluating the Taguchi method and are categorized into two groups: (1) electrical parameters, e.g., polarity, peak current, pulse duration, and powder supply voltage, and (2) non-electrical parameters, e.g., rotational speed of the electrode, injection flushing pressure of the dielectric fluid, and the number of eccentric through-holes in the electrode. Moreover, analysis of the Taguchi method reveals that the electrical group has a more significant effect than the non-electrical group on the machining characteristics. Furthermore, either the polarity or the peak current most prominently affects the MRR, SR or EWR amongst all of the parameters, whereas none of the non-electrical group has an equal affect. Also derived herein are semi-empirical equations that contain all of the machining characteristics.
UR - http://www.scopus.com/inward/record.url?scp=0033732041&partnerID=8YFLogxK
U2 - 10.1016/S0924-0136(99)00423-9
DO - 10.1016/S0924-0136(99)00423-9
M3 - 期刊論文
AN - SCOPUS:0033732041
SN - 0924-0136
VL - 102
SP - 90
EP - 102
JO - Journal of Materials Processing Technology
JF - Journal of Materials Processing Technology
IS - 1
ER -