Method of applying marking agent to aluminum sheet for scrap...

B - Operations – Transporting – 07 – C

Patent

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Details

B07C 5/342 (2006.01) B07B 13/00 (2006.01) B07C 5/34 (2006.01) B21C 51/00 (2006.01) C22B 7/00 (2006.01) C22B 21/00 (2006.01)

Patent

CA 2389866

Application of a marking agent to metal stock, such as aluminum sheet, during and as a part of procedures for preparing the sheet for subsequent, scrap-generating manufacturing operations, to provide a detectable mark on pieces of manufacturing scrap derived from the marked sheet and commingled with scrap of other aluminum alloy sheet, so that the scrap can be sorted and the marked alloy scrap pieces separated from scrap of other alloy sheet to which the marking agent was not applied. Different marking agents, providing detectably different marks, may be respectively applied to sheet of different compositions if scrap pieces of more than two different compositions or compositional families are to be sorted and separated from each other. The marking agent may be added to a lubricant or prelubricant conventionally applied to the sheet by the sheet producer prior to delivery to the manufacturing customer.

L'invention concerne l'application d'un agent de marquage à un matériau métallique, comme une feuille d'aluminium, au cours de la procédure de préparation de cette feuille, et en vue des opérations de fabrication ultérieures générant des déchets. L'invention a pour but d'assurer une marque repérable sur les pièces de déchets de fabrication provenant de la feuille marquée et mélangés avec les déchets d'une autre feuille d'alliage d'aluminium, afin de faciliter le tri des déchets provenant de la feuille marquée et de ceux provenant de l'autre feuille d'alliage non marquée. Il est possible d'appliquer différents agents de marquage, fournissant des marques différentes, à des feuilles de compositions différentes lorsque des pièces de déchets de plus de deux compositions différentes doivent être triées et séparées les unes des autres. Le producteur de feuilles peut ajouter un lubrifiant ou un lubrifiant préliminaire à l'agent de marquage, appliqué de manière traditionnelle à la feuille avant sa livraison au client.

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