KESAN PARAMETER PEMOTONGAN KE ATAS PEMBENTUKAN SERPIHAN PERKAKAS KELULI H13 MENGGUNAKAN MATA ALAT BERSALUT KARBIDA

This paper describes the effect of machining parameters at high cutting speed applications on chip formation of H13 tool steel using coated carbide tool. The machining parameters investigated are cutting speed (Vc): 224–355 m/min, feed rate (f): 0. –0.25 mm/tooth, and radial depth of cut: 0.3–0.8 mm. Axial depth of cut was kept constant at 3 mm. The effect of machining parameters on chip formation was studied in detailed using scanning electron microscope (SEM). It was observed that continuous chip with saw-tooth edge was formed at high feed rate and depth of cut. Energy Dispersive X-ray (EDX) analysis showed that the oxidation occurred due to the heat generation during the cutting process, especially at high feed rate and cutting speed