Iron phosphating process that reduces laser scale resulting...

Details Iron phosphating process that reduces laser scale resulting... Iron phosphating process that reduces laser scale resulting...

C - Chemistry, Metallurgy

23

C

C23C 22/05 (2006.01) C04B 9/02 (2006.01)

Patent

CA 2591141

A process for iron phosphating ferrous metal substrates having undesirable ferrous oxides thereon, such as that formed by laser cutting, that eliminates at least the pickling step in the phosphating process and provides good paint adhesion, and compositions of matter useful in the process.

L~invention concerne un procédé de traitement au phosphate de fer de substrats à base de métal ferreux sur lesquels se trouvent des oxydes ferreux non souhaitables, tels que ceux formés par découpage au laser. Ledit procédé élimine au moins l'étape de décapage du procédé de phosphatation et confère une bonne adhérence de la peinture. L~invention concerne également des compositions de matières utiles dans le procédé.

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