On grindability of Inconel 718 under high efficiency deep grinding by monolayer cBN wheel
by D.V. Patil, S. Ghosh, A. Ghosh, A.K. Chattopadhyay, A.B. Chattopadhyay
International Journal of Abrasive Technology (IJAT), Vol. 1, No. 2, 2007

Abstract: The Nickel-based superalloy, Inconel 718, for its several unique properties, such as high hot strength and resistance to heat, fatigue and corrosion is essentially used in aerospace, nuclear and petrochemical industries for making their salient components which are subjected to high stress and temperature, dynamic loading and corrosive environment. But machining and grinding of this alloy is quite difficult for its high strength, work hardening and poor thermal properties. Researchers are continuing to study the nature, extent and actual causes behind the difficulties of machining and grinding of Inconel 718 aiming improvement in productivity, product quality and overall economy in machining and grinding of Inconel 718. The main objective of the present work is to investigate the role of use of monolayer cBN wheel and High Efficiency Deep Grinding (HEDG) on grindability of Inconel 718 in terms of chip formation, grinding forces and specific energy requirement. The encouraging results indicate that Inconel 718 becomes reasonably well-grindable under HEDG by cBN wheel and mainly for unique favourable properties of the microcrystalline cBN wheel, very small chip load per tooth and more effective fluid application.

Online publication date: Fri, 12-Oct-2007

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