Corrosion protection of steel strips coated with zinc or...

C - Chemistry – Metallurgy – 23 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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

Patent

CA 2309581

A process for the corrosion protection of steel strips coated with zinc or zinc alloy, characterised in that the steel strips coated with zinc or zinc alloy are brought into contact with an aqueous treatment solution having a pH within the range of from 1.5 to 3.5, which contains 1 to 20 g/l manganese(II) ions and 1 to 150 g/l phosphate ions, and the solution is dried without intermediate rinsing. Optionally the solution may contain in addition: up to 10 g/l zinc ions, up to 10 g/l nickel ions, up to 20 g/l titanium ions, up to 50 g/l silicon in the form of silicon compounds, up to 30 g/l fluoride ions, up to 150 g/l of one or more polymers or copolymers of polymerisable carboxylic acids selected from acrylic acid, methacrylic acid and maleic acid, and esters thereof with alcohols having 1 to 6 carbon atoms. The present invention also relates to the correspondingly-treatedmetal strips.

L'invention concerne un procédé pour la protection anti-corrosion de feuillards acier galvanisés ou galvanisés par alliage, caractérisé en ce que l'on met en contact lesdits feuillards acier avec une solution de traitement aqueuse présentant un pH se situant dans la plage de 1,5 à 3,5, cette solution contenant 1 à 20 g/l d'ions d'oxyde manganeux et 1 à 150 g/l d'ions phosphate, et en ce que l'on fait sécher la solution sans rinçage intermédiaire. Cette solution peut éventuellement renfermer en plus: jusqu'à 10 g/l d'ions zinc, jusqu'à 10 g/l d'ions nickel, jusqu'à 20 g/l d'ions titane, jusqu'à 50 g/l de silicium sous forme de composés au silicium, jusqu'à 30 g/l d'ions fluorure, jusqu'à 150 g/l d'un ou de plusieurs polymères ou copolymères d'acides carboxyliques polymérisables choisis parmi l'acide acrylique, l'acide méthacrylique, l'acide maléique et leurs esters avec des alcools possédant 1 à 6 atomes de C. L'invention concerne d'autre part les feuillards métalliques ainsi traités.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Corrosion protection of steel strips coated with zinc or... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Corrosion protection of steel strips coated with zinc or..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Corrosion protection of steel strips coated with zinc or... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1700110

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.