TY - JFULL AU - M. Jalali Azizpour and H. Mohammadi majd PY - 2010/10/ TI - Wear Mechanisms in High Speed Steel Gear Cutting Tools T2 - International Journal of Materials and Metallurgical Engineering SP - 625 EP - 628 VL - 4 SN - 1307-6892 UR - https://publications.waset.org/pdf/8111 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 45, 2010 N2 - In this paper, the wear of high speed steel hobs during hobbing has been studied. The wear mechanisms are strongly influenced by the choice of cutting speed. At moderate and high cutting speeds three major wear mechanisms were identified: abrasion, mild adhesive and severe adhesive. The microstructure and wear behavior of two high speed steel grades (M2 and ASP30) has been compared. In contrast, a variation in chemical composition or microstructure of HSS tool material generally did not change the dominant wear mechanism. However, the tool material properties determine the resistance against the operating wear mechanism and consequently the tool life. The metallographic analysis and wear measurement at the tip of hob teeth included scanning electron microscopy and stereoscope microscopy. Roughness profilometery is used for measuring the gear surface roughness. ER -