Temperature measurement by visible pyrometry : orthogonal cutting application

Nicolas Ranc (1) , Vincent Pina (1) , Guy Sutter (2) , Sylvain Philippon (2)

1 LEEE - Laboratoire d'énergétique et d'économie d'énergie
2 LPMM - Laboratoire de physique et mécanique des matériaux

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 22m/s and 60m/s . 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.

Mots clés: Temperature; Emissivity; Cutting; Pyrometers; Errors; Temperature measurement; Wavelength; Sensors; High speed machining

Domaines: Mécanique [physics.med-ph]

Nicolas Ranc, Vincent Pina, Guy Sutter, Sylvain Philippon. Temperature measurement by visible pyrometry : orthogonal cutting application. Journal of Heat Transfer, 2004, 126, pp.931-936. ⟨10.1115/1.1833361⟩. ⟨hal-00283490⟩