jeepyj
Middlesex NY
TLDR: Porosity due to rust from the back side of 1/4" steel. I keep getting volcanoes that grow up and pop. How do I stop doing that?
My best customer brought me a shitty project. It's an outdoor wood boiler that has two holes from the water jacket to the firebox. Obviously, water is bad for fire so they need repair.
They are in terrible places if I try to get to them from the inside, so I cut 'windows' in the outside of the water jacket. I can reach them now and have already filled one. The other one is the problem. Every time I try to add a bead [filling the hole/not adding a patch] I get the volcano. I'm trying not to add a patch because it's in a PITA area and the whole thing is pitted anyway. It's interesting to me that the firebox is pitted from 1/4 down to maybe 3/16 all over, but the holes clear through almost look like they were gouged out with an angle grinder. A deep 1/2" wide trough with a hole at the bottom with pretty thick metal all around it.
I plan on coating the repaired area with some 2400 degree JB Weld when it's done, but I'm not happy with the volcanoes.
Using a Hobart 190 with 75/25 and .030 wire.
Would I be better off using the fluxcore Lincoln that I use for rusty exhaust work?
.
My best customer brought me a shitty project. It's an outdoor wood boiler that has two holes from the water jacket to the firebox. Obviously, water is bad for fire so they need repair.
They are in terrible places if I try to get to them from the inside, so I cut 'windows' in the outside of the water jacket. I can reach them now and have already filled one. The other one is the problem. Every time I try to add a bead [filling the hole/not adding a patch] I get the volcano. I'm trying not to add a patch because it's in a PITA area and the whole thing is pitted anyway. It's interesting to me that the firebox is pitted from 1/4 down to maybe 3/16 all over, but the holes clear through almost look like they were gouged out with an angle grinder. A deep 1/2" wide trough with a hole at the bottom with pretty thick metal all around it.
I plan on coating the repaired area with some 2400 degree JB Weld when it's done, but I'm not happy with the volcanoes.
Using a Hobart 190 with 75/25 and .030 wire.
Would I be better off using the fluxcore Lincoln that I use for rusty exhaust work?
.