Cutting Parameter on Micro Drilling Characteristics of different Steel

Sanjay Kumar, Manoj .

Abstract


Limited research works have been performed on the cryogenic turning of AISI D2 steel. Research work on thermal assisted machining is limited. There were moreover observed that as the mechanical assembly weared extended, the extra concern at the machined surface moved to versatile pressing factor broaden and the waiting compressive concern under the machined surface extended gigantically. The instrument nose clear impacted the extra concern at the m/c face out and out at early cutting stage. The excess concerns at the machined surface moved to pliable reach via the extension of the gadget nose length. It was assumed that the effective of the nose-range on the extra pressing factor spread lessened colossally via the development of the contraption wear. The analysis of the result revealed that, the liquid nitrogen has a great effect on Surface temperature, Power Consumption and on the Surface Hardness of the material. The mostly significant i/p variables are cutting depth for consumption of power& surface hardness. Speeds of tooling have minimum involvement in the CTAM of D2 alloy steel. Optimized result for surface temperature is 24.44 oC at speed 209 RPM, temp 350oC,cutting depth 0.60 mm, Feeding speed 0.32 mm/rev. Optimized result for Surface Hardness is 64.68 HRC at speed 209RPM, temp 350oC,cutting depth 0.60mm, Feeding speed 0.12 mm/rev.


Keywords


Micro drilling, Steel, Metal Cutting, Cryogenic Machining , surface morphology

References


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