Temperature Measurement in Orthogonal Machining of Sae 1015 Steel Using an Infrared Camera

Abstract

In the present investigation, a MerlinTM Mid InSb MWIR Camera is used to observe chip, tool and workpiece temperature fields in orthogonal machining of SAE 1015 steel tube. A cemented tungsten carbide tool insert (Valenite SECW-2.51.51) is used at 15 rake angle and width of cut 3.175mm, at a feed rate of 0.2 mm/rev and at different cutting speeds (26.9, 51.3, 63.5, 90.4, and 122.2 m/min) on a Vectrax 1660 lathe. The cutting forces were measured using a Kistler 3-Component piezoelectric dynamometer (Type 9257A). The temperature fields are recorded using Version 2.4.11 of ThermaGram Pro with Dynamite software. The temperature field data is then plotted using Version 9.2 of TecPlot software. The experimental results are compared with the analytical model and a commercially available Finite Element Method software (AdvanatEdge Version 4.4.) The experimental tool-face temperatures are observed to be considerably lower (~30%) than analytical model. The experimental tool-face temperature values show reasonable agreement (~8%) with the FEM results. The study concludes that present infrared camera setup can be effectively used to measure tool-face temperatures in orthogonal machining of steel.