Steel Structures Repair
Steel Structures Repair
(OP)
Dear All!
Currently I'm working in a project in wich I've to repair some steel structures from a HV Substation. I've to remove the zinc coating from these structures and then galvanize them again. Prior to the galvanization process it is possible to cover/seal some of the holes of the structures (see an example in attached, where you can see some structures with holes that I need to cover/seal)?
I'm sorry if I'm saying any nonsense, but this is not my area.
Thank you in advanced.
Currently I'm working in a project in wich I've to repair some steel structures from a HV Substation. I've to remove the zinc coating from these structures and then galvanize them again. Prior to the galvanization process it is possible to cover/seal some of the holes of the structures (see an example in attached, where you can see some structures with holes that I need to cover/seal)?
I'm sorry if I'm saying any nonsense, but this is not my area.
Thank you in advanced.





RE: Steel Structures Repair
Assumed that you want to re-coat the hot-dip galvanized steel after the repair, correct?
For repair work, apply the proper cold galvanizing coating material on these holes.
RE: Steel Structures Repair
Yes, I want to re-coat the hot-dip galvanized steel after the repair.
You see the holes in the structures in the picture that I've attached? My client want this holes covered/sealed in a proper way.
For what I understand, you said that in the repair stage this holes can be sealed with cold galvanizing material? It's that correct? Then after the repair works re-coat the hot-dip galvanized process.
I did not know that there was a product capable of sealing these holes, I thought in my ignorance that these holes had to be covered through some process involving welding.
Thankx
RE: Steel Structures Repair
RE: Steel Structures Repair
Best regards - Al
RE: Steel Structures Repair
RE: Steel Structures Repair
If you want to reuse the existing steel it is a matter of dismantling it, noting how everything goes together. There may be months between tear down and re-assemble. Hopefully there are 'member stamps' on the individual pieces, else, you have more work. Parts can be repaired by welding and the pieces re-dipped and re-assembled. You need good drawings and perhaps existing shop drawings. It's a chore.
Alternatively, you can lightly sandblast affected parts and use a zinc rich primer or epoxy to effect a repair; it will not be as durable as a HDG approach, but, will be much less costly. It's a matter of discussing this with a coating supplier to use the right product.
I would not recommend filling holes with silicone; there is a good chance pockets will remain that will trap water and cause further corrosion.
Dik
RE: Steel Structures Repair
Best regards - Al
RE: Steel Structures Repair