Method for identifying surface characteristics of...

G - Physics – 01 – N

Patent

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G01N 21/88 (2006.01) G06K 7/10 (2006.01) G06K 9/20 (2006.01)

Patent

CA 2681262

The invention relates to a method for recognising surface characteristics of metallurgical products, especially continuously cast products and rolled products. According to said method, a defined section of the product surface (12, 12') is irradiated by at least two radiation sources of different wavelengths, from different directions, and the irradiated surface section is optoelectronically detected. Three light sources (21, 22, 23) are oriented towards the product surface (12, 12'), as radiation sources, under the same angle (.alpha.), the positions thereof being in three planes (E1, E2, E3) forming a 120° angle and being perpendicular to the product surface (12, 12'). In this way, instructive information about metallurgical products can be determined and stored in a very short space of time such that the products can be determined in a perfectly identified manner for the reprocessing, in terms of the surface quality or surface structure thereof.

L'invention concerne un procédé d'identification de caractéristiques de surface de produits métallurgiques, notamment de produits laminés et de coulée continue, procédé selon lequel une section définie de la surface (12, 12') du produit est exposée aux rayons d'au moins deux sources de rayonnement de différente longueur d'onde, provenant de différentes directions, et la section de surface exposée aux rayons est enregistrée par voie optoélectronique. Trois sources de lumière (21, 22, 23), faisant fonction de sources de rayonnement, sont dirigées sur la surface (12, 12') du produit en formant le même angle (.alpha.), sources dont les emplacements sont situés dans trois plans (E1, E2, E3), formant un angle de 120° et perpendiculaires à la surface (12, 12') du produit. Ainsi, des données sur des produits métallurgiques, riches en enseignements, peuvent être obtenues et mémorisées en très peu de temps, de sorte que ces produits peuvent être parfaitement identifiés à des fins de traitement ultérieur et la nature ou la structure de leur surface peut être déterminée.

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