Experimental Investigation on Tapping of Al6061-SiC Metal Matrix Composite with HSS Machine Taps

Paious, Melvin and Adhikari, Raviraj and Nagaraja, . (2019) Experimental Investigation on Tapping of Al6061-SiC Metal Matrix Composite with HSS Machine Taps. In: Proceedings of International conference on Computational Fluid Dynamics in Engineering and Health Sciences, 19/12/2015, Malysia.

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Abstract

The present study deals with tapping of Al6061/SiC metal matrix composite. Stir casting technique was used for the fabrication of composite. Castings were produced by varying weight percentage of SiC (5%, 7.5% and 10%) of 23μm size in Al6061. The fabricated specimens were characterized for their hardness and tensile strength. It was found that hardness increases by the addition of SiC. Images from Scanning Electron Microscope (SEM) and metallurgical microscope showed the fair distribution of reinforcement. Due to the presence of SiC reinforcement that is highly abrasive in nature makes machining difficult and produces high rate of tool wear. After drilling, tapping experiments were conducted for the machinability study of Al6061/SiC metal matrix composite by using M8 HSS machine tap. Tapping operation was performed under dry condition with different cutting speed (12m/min, 14m/min and 16m/min) and constant feed rate equal to the pitch of thread. Torque required for tapping was measured using strain gauge based two-component cutting tool dynamometer. Microstructure and surface morphology of thread surfaces were analyzed using Metullargical Microscope and Scanning Electron Microscope (SEM) respectively. Estimation of progressive flank wear of machine taps was undertaken using profile projector. The performance of HSS machine taps was evaluated in terms of tapping torque, tool flank wear and surface characteristics of thread surfaces

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Metal matrix composite, Al 6061, Stir casting, Tapping
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Engineering > MIT Manipal > Mechatronics
Depositing User: MIT Library
Date Deposited: 13 Sep 2019 10:36
Last Modified: 13 Sep 2019 10:36
URI: http://eprints.manipal.edu/id/eprint/154547

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