A no-rinse phosphating process

Details A no-rinse phosphating process A no-rinse phosphating process

C - Chemistry, Metallurgy

23

C

C23C 22/12 (2006.01) C23C 22/18 (2006.01) C23C 22/36 (2006.01)

Patent

CA 2200893

A phosphatising solution and a phosphatising process by means of said phosphatising solution are preferably used to phosphatise webs of steel, zinc- coated steel or aluminium strips without rinsing (no-rinse phosphatising). The phosphatising solution contains at least 2 to 25 g/l zinc ions and 50 to 300 g/l phosphate ions.

L'invention concerne une solution de phosphatage et un procédé de phosphatage faisant appel à cette solution de phosphatage pour phosphater de préférence des bandes d'acier, d'acier zingué ou d'aluminium sans rinçage final (phosphatage sans rinçage). La solution de phosphatage contient au moins 2 à 25 g/l d'ions de zinc et 50 à 300 g/l d'ions de phosphate.

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