On The Measurement of Temperature in Material Removal Processes

Pressure and temperature effects on the decomposition of arc evaporated Ti0.6Al0.4N coatings in continuous turning

“…The highest temperature is observed at about half the contact length, hereinafter referred to as the hot zone where the maximum temperature, T max , is measured to 890 °C. Both the distribution and the magnitude of the temperature profile are consistent with previous studies [15,18,19]. Figure 4 (a), the Z-contrast image reveals a small layered modulation in composition.…”

“…One explanation for this can be the difficulty to measure correct temperatures or the difference between longitudinal and orthogonal turning. Though, the fact that the difference is rather large and earlier temperature measurements have shown a total error in temperature of 25-30 °C [15,19] using an identical set-up by invoking the uncertainty of the emissivity value with an IR-camera in the error analysis. In further support of the accuracy of our temperature measurement we note that the recorded temperature is consistent with FEM-simulations of the temperature distribution on a cutting insert using a similar set up [18].…”

Microstructure evolution during the isostructural decomposition of TiAlN—A combined in-situ small angle x-ray scattering and phase field study

“…Furthermore, the temperature of the coating at the cutting edge during metal cutting has been reported to increase rapidly, after which a steady state temperature is reached. 28 The kinetics of the decomposition, resulting from a fast temperature increase followed by isothermal annealing, is thus technically important for the understanding of how the coatings behave during metal cutting. 29 In this work, arc evaporated Ti 0.50 Al 0.50 N and Ti 0.33 Al 0.67 N coatings were, after a rapid heating, isothermally annealed at 850 and 900 C up to 160 min.…”

Thermal analysis in Ti-6Al-4V drilling

“…Several thermal measurement devices dedicated for machining are already available on the market [1]. Out of those apparatus, the infrared CCD camera together with the thermocouple (TC) based techniques are the most well-known and efficient ways to measure the temperature in turning [2,3].…”