Orvar Supreme Sicak İş Takim Çeli̇ği̇ni̇n İşlenebi̇li̇rli̇ği̇ni̇n İncelenmesi̇ an Investigation into the Machinability of Orvar Supreme Hot Work Tool Steel

In this study, machinability tests on Assab Korkmaz Orvar Supreme (1.2344 ESR, AISI H13 Premium) hot work tool steel widely used in industry were carried out. Machinability tests were carried out through single point turning method at eight different cutting speeds (120, 160, 200, 240, 280, 320, 360 ve 400 m/dak), four different feed rates (0,05; 0,10; 0,15 and 0,20 mm/min) and 1 mm depth of cut without coolant. The machined surface roughness and cutting forces were measured. The lowest surface roughness was obtained at 0.05 mm/dev feed rates. However, continuous chips were formed due to low chip thickness at 0.05 mm depth of cut and this led to problems during machining. Increasing cutting speed significantly decreased the cutting forces.