Metrological changes in surface profile, chip, and temperature on end milling of M2HSS die steel Online publication date: Mon, 23-Nov-2020
by K. Balamurugan
International Journal of Machining and Machinability of Materials (IJMMM), Vol. 22, No. 6, 2020
Abstract: The effect of the thermal energy generated during end milling on the surface profile and chip morphology with a change in the spindle speed and feed rate is studied and reported. Steels with 5% molybdenum have found an amicable application as molybdenum based high speed die steel (M2HSS). It is used as the machining material. Taguchy's L9 orthogonal array machining condition is performed for two different tool diameters of 10 mm and 12 mm. High machining temperatures initiate a local welding zone, creates a weldment between the chip and tool surface, and progress to excess tool wear. This experimental study reveals that the details of increased thermal interaction that allows an excessive deformation of the sample through chip removal. With an increase in the high level of spindle speed and low feed rate, it is possible to get an acceptable level of surface profile roughness with a less tool wear rate. Further, the chip morphological analysis was performed and reported.
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