I just did a job where I repaired some ladles. First I plasma cut out the bad area, ground and then patched with 11 g stl. st. Customer said ladles made of stl. st. (OOPS he didn't say anything about corrosive, maybe I should of known oh well)
Thus the problem I used 11 g 304 stl. st. and since found that aluminum is very corrosive in a molten state, and the patch I was told disintegrated immediately. I am thinking now that 316 stl. st. would of been the correct stl. st. for it is used for its corrosive properties right ?
I patched this by overlapping the patch and tig welding all around, but this way of patching creates a cut out area inside ladle, I now think material would build up here and cause problems ?
Or should a patch be placed inside the cutout where by it fills the cut out and where I would be doing a butt weld all around, therefor the inside would be smoother.
Thanks guys for any info J P Streets Welding
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