System for making an on-line determination of degree of...

G - Physics – 01 – N

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G01N 23/20 (2006.01) C23C 2/28 (2006.01) G01N 23/207 (2006.01)

Patent

CA 2049584

A system for making an on-line determination of the degree of alloying in galvannealed steel sheets are provided, which includes an X-ray tube for generating X-ray, detectors for detecting the X-ray diffraction intensity of the ~ phase and .GAMMA. phase of Fe-Zn intermetallic compounds phases of the galvannealed steel sheet and a detector for detecting the background intensity, all the detectors being located same plane on the surface of the galvannealed steel sheets, and further includes an arithmetic unit for receiving the outputs of the detectors to compute the X-ray diffraction intensities. Preferably, this system includes a detector for detecting the X-ray diffraction intensity of the .delta.1 phase.

Cette invention concerne un dispositif de détermination en direct de la teneur en métaux d'alliage de tôles d'acier galvanisé recuit. Il comprend un tube à rayons X, des détecteurs d'intensité de diffraction desdits rayons X par les phases ~ et gamma des composés intermétalliques Fe-Zn des tôles analysées et un détecteur d'intensité des rayonnements parasites, tous les détecteurs se trouvant dans un même plan à la surface de la tôle analysée. Le dispositif comprend en outre un calculateur qui détermine l'intensité des rayons X diffractés à partir des signaux de sortie des détecteurs. De préférence, le dispositif comprend un détecteur d'intensité des rayons X diffractés par la phase delta.1.

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