Experimental investigation on cryogenic cooling by Liquid Nitogen in the hard machining of Inconel 718

Abstract

Hard metals are hardened steels high speed steels heat treatable steels tool teals bearing steels chilled white cast irons Inconel and cobalt alloys Among these hard metals Iconel is being used in biomedical applications in recent years The hardness generated is normally in the range of 45 70 HRC during the machining of hard metals In hard machining processes the major quality output of the machined surfaces is surface roughness newline