Method and device for measuring a melt cooling curve

G - Physics – 01 – K

Patent

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G01K 13/12 (2006.01) G01J 5/04 (2006.01)

Patent

CA 2522360

The invention relates to a method for measuring a melt cooling curve and/or a heating curve for a melt sample with the aid of an optical fibre, wherein the immersion end of an optical fibre provided at least partially with a free surface at a certain distance is encompassed with a theoretically heat- resistant reception space of the sample. Said immersion end of the optical fibre is immersed into the melt, thereby forming a sample in the sample reception space which is afterwards removed together with the sample and optical fibre from a molten metal and afterwards, the sample cooling curve of the sample and/or the temperature profile during heating are measured after the sample prehardening with the aid of a signal which is received by said optical fibre and transmitted to a measuring device. A corresponding measuring device and the use thereof are also disclosed.

L'invention concerne un procédé servant à mesurer la courbe de refroidissement de masses en fusion et/ou la courbe d'échauffement d'échantillons de masse en fusion à l'aide d'une fibre optique. Selon l'invention, une extrémité d'immersion, présentant au moins partiellement une surface libre, de la fibre optique est entourée, à une certaine distance, d'un espace de réception d'échantillon thermiquement résistant. L'extrémité d'immersion de la fibre optique est plongée dans la masse en fusion, un échantillon étant ce faisant formé dans l'espace de réception d'échantillon. L'espace de réception d'échantillon est alors retiré, avec l'échantillon et la fibre optique, de la masse de métal en fusion, puis la courbe de refroidissement de l'échantillon et/ou, après solidification préalable de l'échantillon, le profil des températures lors de l'échauffement sont mesurés au moyen d'un signal capté par la fibre optique et transmis à un appareil de mesure. L'invention concerne également un dispositif correspondant et son utilisation.

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