Surface integrity of AISI D2 when turned using coated and uncoated carbide tools
by C.H. Che Haron, J.A. Ghani, G.A. Ibrahim
International Journal of Precision Technology (IJPTECH), Vol. 1, No. 1, 2007

Abstract: Surface integrity of tool steel AISI D2 was studied to investigate the surface roughness, surface topography and surface hardness at various machining parameters. Coated carbide (KC 9125) and uncoated carbide (K 313) were used in turning tool steel AISI D2 bar with hardness of 25 HRC. Machining tests were performed in dry cutting condition at various cutting speeds and feed rates while the depth of cut was kept constant. Taguchi's design of experiment was employed to accommodate the machining parameters of various cutting speeds and feed rates. Results show the surface roughness for uncoated carbide tools in range of 0.36–4.05 µm and coated carbide tools in range of 0.30–1.51 µm. The lowest surface roughness value for both types of carbide tools were observed at cutting speed of 250 m/min and feed rate of 0.05 mm/rev. Martensitic white layer was found at 170 µm underneath machined surface.

Online publication date: Wed, 10-Oct-2007

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