Affiliation:
1. Kanagawa Institute of Technology
Abstract
Engineering ceramics have received significant attention in the recent years owing to their exceptional mechanical properties, which are expected to be beneficial for engineering applications. However, it has always been a great challenge to realize ductile-mode grinding in engineering ceramics, with one of the critical obstacles being the heat generation that limits the removal rate. As a result, thermal damages are often observed on the ground surfaces. This paper presents the ductile-mode grinding. In the process the grinding wheel is excited along the radial direction by applying an ultrasonic vibration of frequency is 38.5 kHz and amplitude of 0-2 μm. The wheel comes in contact with the Al2O3 ceramic at constant forces 18-24 N. Experimental results indicate that the ground surface is devoid of thermal damages, when removal rate of the vibration-assisted process is approximately 1.5 times higher than without vibration.Keywords: ductile-mode grinding, radial directional vibration, hard and brittle material, engineering ceramic, thermal damage
Publisher
Trans Tech Publications, Ltd.
Reference3 articles.
1. K Hirao and Y. Yoshizawa: Special Issue, The Latest Trend in Engineering Ceramics, Journal of the Japan Society for Abrasive Technology, 58, 3(2014), 146 (in Japanese).
2. K. Imai and H. Hashimoto: Grinding Force Criteria in Shear-Mode Grinding, Proceedings of the 13th Annual Meeting, The American Society for Precision Engineering, Vol. 18, p.136, (1998).
3. K. Imai and H. Hashimoto: Thrust Force Directional Vibration-Assisted Ductile-mode Grinding of Single-crystal Si, Advanced Materials Research Vols. 126-128, p.627, 2010/09.
Cited by
3 articles.
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