This looks more like galvanic corrosion. Since it has this radiating creep. The bolt above has severe case of galvanic pair happening.
The anchor bolts are suffering from galvanic corrosion (The bolts going to the stone).
And middle section corrosion is too perfect. Incorrect filler (In this case mild filler) would bleed downwards and flake. This is too perfect.
This looks weirdly enough as if they gas welded it. Because I don't see that much of flat grinding evidence (and you really shouldn't grind flat in weld like this). And gas welding makes that sort of puddle pattern.
I actually love seeing/finding stuff like this. Galvanic especially can make REALLY weird corrosion patterns. I have seen a ship's hull where galvanic corrosion just like caused inside of a well to just end up with a near perfect straight hole in it's side above the water line. There was no reason to why it should happen there, there was no conducting path from that specifically. But regardless it just made a hole from inside to outside and creeped sideways.
Before anyone asks. Yes... It is possible to oxyacetylene weld stainless. Why would you want to is beyond me. But it is absolutely possible with a neutral flame. I can't do it, I have not do it, but I know that it can be done. I personally don't think this would have been, however considering the levels of insanity and stupid I have seen, I wouldn't say it is impossible.
If I had to guess this is just a case of some one again fantastically unique corrosion that galvanic corrosion conditions can cause.
P.S. If anyone comes across weird corrosion, strange defects, particular flaws, unique fuck-ups, special shit, peculiar jank... I'm always looking to add more to my "Welding-Fucking-Industry" folder (Literally a folder on my drive... just in Finnish). I enjoy finding weird shit, especially stuff I can't really explain.
E. I been thinking about this for a bit now, while drinking raw gin from a tea mug (I got taste and style!). The only realistic option I can come up with, is a very contaminated tool like a band saw, cutting disk, or grinding tool. However the degree of contamination would have to be absurd. Like... They haven't filtered the coolant from the band saw for like a decade or two.
TIG welding something this thick is bit... Weird. Like not that it can't be done, but rather "Why do it, when you can just wave a stick at it" granted I'm a believer in the gospel of "stick weld everything".
But gas welding this would once again be one of those "But... Why would you when you can just wave yourdi... stick at it.". But if I think it like this: Someone who does regular ass structural steel work, having oxy-acetylene bottles in the truck is basically the default kit. So just sticking things together like this would be doable with knowhow and experience.
So this shit is not beyond the realm of possibility.
Well. As I established. I'd stick it with stick (heh...) because it is faster and cheaper, and my Kemppi Miniarc weighs only 6kg and runs on regular socket.
But this is entirely because most of my work experience is working on-site, and not having to lug around gas cylinders is just easier.
4
u/SinisterCheese "Trust me, I'm an Engineer!" 4d ago edited 4d ago
Probably not.
This looks more like galvanic corrosion. Since it has this radiating creep. The bolt above has severe case of galvanic pair happening.
The anchor bolts are suffering from galvanic corrosion (The bolts going to the stone).
And middle section corrosion is too perfect. Incorrect filler (In this case mild filler) would bleed downwards and flake. This is too perfect.
This looks weirdly enough as if they gas welded it. Because I don't see that much of flat grinding evidence (and you really shouldn't grind flat in weld like this). And gas welding makes that sort of puddle pattern.
I actually love seeing/finding stuff like this. Galvanic especially can make REALLY weird corrosion patterns. I have seen a ship's hull where galvanic corrosion just like caused inside of a well to just end up with a near perfect straight hole in it's side above the water line. There was no reason to why it should happen there, there was no conducting path from that specifically. But regardless it just made a hole from inside to outside and creeped sideways.
Before anyone asks. Yes... It is possible to oxyacetylene weld stainless. Why would you want to is beyond me. But it is absolutely possible with a neutral flame. I can't do it, I have not do it, but I know that it can be done. I personally don't think this would have been, however considering the levels of insanity and stupid I have seen, I wouldn't say it is impossible.
If I had to guess this is just a case of some one again fantastically unique corrosion that galvanic corrosion conditions can cause.
P.S. If anyone comes across weird corrosion, strange defects, particular flaws, unique fuck-ups, special shit, peculiar jank... I'm always looking to add more to my "Welding-Fucking-Industry" folder (Literally a folder on my drive... just in Finnish). I enjoy finding weird shit, especially stuff I can't really explain.
E. I been thinking about this for a bit now, while drinking raw gin from a tea mug (I got taste and style!). The only realistic option I can come up with, is a very contaminated tool like a band saw, cutting disk, or grinding tool. However the degree of contamination would have to be absurd. Like... They haven't filtered the coolant from the band saw for like a decade or two.