Tribological studies on PCBN tool in turning metal matrix composites with steam as coolant.

Shetty, Raviraj and Pai, Raghuvir B and Barboza, A B V and Rao, Srikanth S (2006) Tribological studies on PCBN tool in turning metal matrix composites with steam as coolant. In: Proceedings of International Tribological conference (AUSTRIB 2006), 2006, Brisbane, Australia.

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Metal matrix composites (MMCs) have been found to possess tremendous prospective engineering applications that require materials offering a combination of lightweight with considerably enhanced mechanical and physical properties. However, the applications of MMCs are limited by their poor machinability which is a result of their highly abrasive nature that causes excessive wear to the cutting tools. Steam generator and steam feeding system was developed to generate and feed steam and is designed in such a way to control the cutting temperatures on the tool by circulating steam at different directions on chip tool interface. This arrangement maintains the tool's hot-strength at its desirable range to resist tool wear in the cutting process. Comparative experiments is carried out in PSG Lathe A141 with 2.2 kW power, and polycrystalline cubic boron nitride inserts (PCBN) KB-90 grade for cutting age hardened 6061 Al-SiCp Metal matrix composites with SiC 15 vol. % and 25μm particle size. The effects of steam under different directions on tool wear, and examination of built up edge, shear angle under steam, compressed air and dry cutting, at constant Cutting speed, Feed and for four different Depth of cut have been investigated.

Item Type: Conference or Workshop Item (Paper)
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 03 Dec 2014 11:44
Last Modified: 03 Dec 2014 11:44

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