Temperature Measurement by Visible Pyrometry: Orthogonal Cutting Application

Author:

Ranc N.1,Pina V.1,Sutter G.2,Philippon S.2

Affiliation:

1. L.E.E.E., E.A.387, Universite´ de Paris X Nanterre, 1, Chemin Desvallie`res, 92410 Ville d’Avray, France Tel.: +33-1-47-09-70-13; Fax: +33-1-47-09-16-45

2. L.P.M.M., U.M.R. C.N.R.S. n°7554, I.S.G.M.P., Universite´ de Metz, Ile du Saulcy, 57045 Metz, France

Abstract

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.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

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