G - Physics – 01 – B
Patent
G - Physics
01
B
G01B 7/06 (2006.01) B05D 3/14 (2006.01) C23C 2/34 (2006.01) G01B 11/06 (2006.01) G01B 21/08 (2006.01)
Patent
CA 2263347
During the application of a roll coating on a metal substrate, using double contactless measuring sensors (1, 3), inductive, and for instance optical or capacitive, the method consists in effecting, before application, at least a double distance measurement over a strip zone not yet coated, then, effecting, after application, at least another double distance measurement over approximately the same zone already coated, and the thickness of the applied coating is deduced from the double measurements before application and after application. The invention is applicable to the measurement of thickness, on ferromagnetic substrates, of non solidified coatings, in particular liquid or pasty and to the adjustment of thickness in installations with corresponding coatings.
Au cours de l'application du revêtement sur un substrat métallique en défilement, en utilisant des capteurs doubles (1, 3) de mesure de distances sans contact, inductifs d'une part, et par exemple optiques ou capacitifs d'autre part, on effectue, avant application, au moins une double mesure de distance sur une zone de bande non encore revêtue, puis, on effectue, après application, au moins une autre double mesure de distance sur approximativement la même zone de bande revêtue, et on déduit l'épaisseur du revêtement appliqué desdites doubles mesures avant application et après application. Application à la mesure d'épaisseur, sur des substrats ferromagnétiques de revêtements non solidifiés, notamment liquide ou pâteux et à la régulation d'épaisseur dans des installations de revêtement correspondantes.
Bonnebat Claude
Branci Samy
Robic
Sollac
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