Article : Experimental Evaluation Of Machining Surface In Thermally Enhanced Machining


Experimental Evaluation Of Machining Surface In Thermally Enhanced Machining


Ashish S.Shah, Bharat N. Gelot

 Materials with resistance to wear are frequently utilized in industry and these materials are notoriously difficult to machine. During the machining process, instead of increasing the quality of the cutter materials, softening of the work piece is the preferred approach. One of the methods of softening the work piece is hot machining. The temperature rise at the shear zone reduces the yield strength and work hardening of the work piece, which make the plastic deformation of hard-to-machine materials easier during machining. Heating is performed before or during machining. Hot machining prevents cold working hardening by heating the piece above the recrystallization temperature and this reduces the resistance to cutting and consequently favors the machining. There are various heating methods, like bulk heating using furnace, area heating using torch flame, plasma arc heating, induction heating and electric current resistance heating at tool-work interface. We used torch flame method for heating the work piece.   Hot Machining can be used to decrease tool wear, power consumed and increase surface finish. 

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