Method of plating and pretreating aluminium workpieces

Details Method of plating and pretreating aluminium workpieces Method of plating and pretreating aluminium workpieces

C - Chemistry, Metallurgy

25

D

C25D 5/44 (2006.01) C23G 1/12 (2006.01) B23K 35/02 (2006.01) B23K 35/28 (2006.01)

Patent

CA 2440756

The invention relates to a method for applying a metal lazer onto at least one surface of an aluminium alloy workpiece,comprising the steps of pretreating said surface and applying the metal layer by plating, wherein the pretreating step comprises a non-electrolytic treatment by immersion of the workpiece in a single acidic solution, preferably a sulphuric acid solution, having a temperature of less than 100~C.

L'invention porte sur un procédé d'application d'une couche métallique sur au moins une des surfaces d'une pièce d'aluminium consistant à prétraiter la dite surface, puis à lui appliquer la couche métallique par plaquage, l'étape de prétraitement consistant en un traitement non électrolytique par immersion de la pièce dans une seule solution acide, de préférence d'acide sulfurique, à une température inférieure à 100 ·C.

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