Sheet metal surface treatment method

Details Sheet metal surface treatment method Sheet metal surface treatment method

C - Chemistry, Metallurgy

10

M

C10M 173/02 (2006.01) C10M 107/34 (2006.01) C23F 11/173 (2006.01)

Patent

CA 2238840

A method for preparing sheet metal for stamping and/or protecting it from corrosion by applying an aqueous solution of polyethoxylates of one or more lanolin derivatives, drying the surface to leave a dry deposit, and performing at least one oiling step on the dry deposit. In particular, the method enables stamping operations to be simplified, as even after prolonged storage, no fresh oiling of the treated sheet is required immediately prior to stamping.

Procédé destiné à préparer la tôle à l'emboutissage et/ou à la protéger contre la corrosion, dans lequel on applique une solution aqueuse de polyéthoxylats d'un ou plusieurs dérivés de la lanoline, on sèche ladite surface pour obtenir un dépôt à l'état sec, puis on effectue au moins une opération de huilage sur le dépôt à l'état sec. Ce procédé permet notamment de simplifier les opérations d'emboutissage: même après stockage prolongé, il n'est pas nécessaire de rehuiler la tôle traitée juste avant d'emboutir.

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