I just did arc welding on the broken cast iron plate about 5mm thickness.
The broken area was throughly cleaned up with angle grinder and dremmel.
I used 6013 rods with 200 amp IGBT welder set at about 150A.
After the welding, the broken parts seem joined strong, but the weld beads has lots of holes.
I cleaned it up again, and did 2nd welding trying to fill the holes in the beads, and also
parts where it was showing gaps in the two joined pieces.
After 2nd welding I cleaned it up with angle grinder. The join seems still very strong.
The whole joined cast iron plate (very heavy) dropped onto the ground at one point in the middle of
angle grinder clean up, but it didn't break, still in one piece.
But the welded beads still looks has some big holes, not sure if they are new holes or ones from the first weld got bigger.
The big holes emerged after lots of grinding with the angle grinder trying to flatten the weld beads down making flush with the base iron cast.
What could be this problem, and could it be repaired for fully filled beads?
Should it have 3rd welding for attempting to fill the big holes? Or would it be just the same result, and perhaps
the answer is somewhere else?
Thanks
The broken area was throughly cleaned up with angle grinder and dremmel.
I used 6013 rods with 200 amp IGBT welder set at about 150A.
After the welding, the broken parts seem joined strong, but the weld beads has lots of holes.
I cleaned it up again, and did 2nd welding trying to fill the holes in the beads, and also
parts where it was showing gaps in the two joined pieces.
After 2nd welding I cleaned it up with angle grinder. The join seems still very strong.
The whole joined cast iron plate (very heavy) dropped onto the ground at one point in the middle of
angle grinder clean up, but it didn't break, still in one piece.
But the welded beads still looks has some big holes, not sure if they are new holes or ones from the first weld got bigger.
The big holes emerged after lots of grinding with the angle grinder trying to flatten the weld beads down making flush with the base iron cast.
What could be this problem, and could it be repaired for fully filled beads?
Should it have 3rd welding for attempting to fill the big holes? Or would it be just the same result, and perhaps
the answer is somewhere else?
Thanks