Comparison of machining performance of hole-sinking micro-EDM without and with ultrasonic vibration on titanium alloy
by Param Singh; Vinod Yadava; Audhesh Narayan
International Journal of Precision Technology (IJPTECH), Vol. 7, No. 2/3/4, 2017

Abstract: Titanium alloys are highly demanding in aerospace industries due to its high strength-to-weight ratio and high hot hardness, and termed as difficult-to-machine materials. Creating microholes of high accuracy in these materials is challenging task for manufacturing industries. Conventional twist drills are generally failed in the micromachining of Titanium alloys due to the low thermal conductivity of these alloys. In consideration of all these problems, authors used self-developed hole-sinking micro-EDM (HS-MEDM) setup without and with the assistance of ultrasonic vibration (UV) to create microholes in Titanium alloy (Ti-6Al-4V) workpiece. Comparative study regarding machining performance in terms of material removal rate (MRR), tool wear rate (TWR), hole taper (T_a) and overcut (OC) at different gap current, pulse on-time and pulse off-time has been reported without and with assistance of UV. It was found that HS-MEDM with UV is more advantageous in producing microholes with higher MRR, lower TWR, T_a and OC, and smoother surface.

Online publication date: Tue, 27-Mar-2018

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Precision Technology (IJPTECH):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com