Tin plating method and bath having wide optimum current...

Details Tin plating method and bath having wide optimum current... Tin plating method and bath having wide optimum current...

C - Chemistry, Metallurgy

25

D

C25D 3/30 (2006.01) C25D 7/06 (2006.01)

Patent

CA 2247440

In a tin plating bath containing 40-100 g/l of Sn ions, and preferably 20-400 g/l of phenol sulfonic acid, a steel plate is plated with tin at a relative speed difference between the steel plate and a plating liquid of 2-20 m/sec in a wide optimum current density range of not less than 80 A/dm2 and not less than 250 A/dm2 to obtain a tinned product.

L'invention concerne un bain d'étamage contenant 40-100 g/l d'ions Sn et, de préférence, 20-400 g/l d'acide phénolsulfonique, servant à l'étamage de plaques d'acier, ces dernières se déplaçant avec une vitesse relative entre la plaque d'acier et le liquide d'étamage de 2-20 m/sec, ce qui permet un fonctionnement optimal dans une plage large de densités de courant, entre pas moins de 80 A/dm?2¿ et pas moins de 250 A/dm?2¿, pour obtenir un produit étamé.

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