The working processes of metallic materials at high strain rate like forging, stamping and machining often induce high temperatures that are difficult to quantify precisely. In this work we, developed a high-speed broad band visible pyrometer using an intensified CCD camera (spectral range: 0.4 μm–0.9 μm). The advantage of the visible pyrometry technique is to limit the temperature error due to the uncertainties on the emissivity value and to have a good spatial resolution (3.6 μm) and a large observation area. This pyrometer was validated in the case of high speed machining and more precisely in the orthogonal cutting of a low carbon steel XC18. The cutting speed varies between 22 ms−1 and 60 ms−1. The experimental device allows one to visualize the evolution of the temperature field in the chip according to the cutting speed. The maximum temperature in the chip can reach 730°C and minimal temperature which can be detected is around 550°C.
Temperature Measurement by Visible Pyrometry: Orthogonal Cutting Application
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division October 9, 2003; revision received August 17, 2004. Associate Editor: B. Farouk.
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Ranc, N., Pina, V., Sutter , G., and Philippon, S. (January 26, 2005). "Temperature Measurement by Visible Pyrometry: Orthogonal Cutting Application ." ASME. J. Heat Transfer. December 2004; 126(6): 931–936. https://doi.org/10.1115/1.1833361
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