Galvanized metals

Nov 09, 2003 2 Replies
T

this is more of a cosmetics question, than a welding one. i take all the usual precautions welding galvanized (tubing, usually).. they're sound welds. my problem is rusting.



after wire brushing (sometimes grinding) i've tried clear acrylic coats.. sometimes even cold-zincing sprays.. but the color of the cold zincing never really matches.



any good ideas for avoiding unsightly rusting on these welds?



thanks,



-tony


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E

You need to completely clean the metal around the weld before using a cold zinc spray. Otherwise you just seal in oxide pockets.

There are zinc sprays that give a better color match. The one the hot-dip galvanizing shops use is a bright zinc spray that matches really well.

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