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Hello everybody, Alright, this is not really a welding question but rather about metal compatibility.I'm planning to build an outdoor sculpture combining a structural mild steel frame (or COR-TEN if necessary) with bolted (to the frame) galvanized steel sheets. I am aware of the galvanic effect between two different metals (in my case - steel and galvanized steel). But at the same time I'm a bit confused: how come nothing bad happens between the zinc coating and the base steel itself? And if there is no problem within galvanized steel, would there be a problem with the combination mentioned above?Any input about this would be appreciated.
Reply:Just paint the steel before you attach the galvanized to it, you'll be fine. Most issues with galvanic action have electricity and or water in the mix. If the steel frame will be completely shielded from water, and not visible, you don't even need to paint it.And then, after so much work...... you have it in your hand, and you look over to your side...... and the runner has run off. Leaving you holding the prize, wondering when the runner will return.
Reply:how come nothing bad happens between the zinc coating and the base steel itself? And if there is no problem within galvanized steel, would there be a problem with the combination mentioned above?
Reply:Thank you Rojodiablo and Sandy for your advise. Unfortunately painting is not really an option due to the size of the pieces - about 10' in length - it would be far beyond the budget. Plus the client wants the look of raw metal. The idea was to combine white metal (galvanized) with rusty metal. Do you think galvanized steel would also destroy COR-TEN? How about aluminum with steel? They are in the same galvanic group.
Reply:The idea was to combine white metal (galvanized) with rusty metal. Do you think galvanized steel would also destroy COR-TEN? How about aluminum with steel? They are in the same galvanic group.
Reply:Originally Posted by SandyThe real heavy galvy is about a thing of the past. |
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发表于 2021-9-1 00:57:14