MichaelV
Member
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- 242
- Location
- Co. Antrim
Moving on to PF (vertical-up)...
Position & material:
PF (3F), tee joint between 10 mm thick mild steel, rolled flat bars with rolled edges.
Parameters:
All passes each side with 3.2 mm, 7018 (ESAB 48.00), DC positive, 120A, 30% arc force.
Left hand side consists of root + 2 + 3.
Right hand side consists of root + 2.
Rods taken straight from a freshly opened vacpac (nice )
Remarks:
I think @Robert Mullins made a vital point in @davidjohnperry 's thread regarding the root pass in vertical up fillet welds; namely, being careful not to "bridge" the root and thereby hamper penetration. I kept Robert's advice in mind. The venerable 48.00 does run beautifully, even in the hands of an amateur. I found maintaining a good line and avoiding undercut were probably bigger challenges than worrying about penetration (note toe on LHS). The rolled corners of the oncoming plate are obliterated and penetration is very good, although the cap profile isn't great at all. The necessarily slow travel speed and running at 120A with theses rods (which are excellent in PF) should nearly guarantee good penetration. I'm not sure I would even try to repeat this exercise with 6013, but am open to persuasion/goading!
Michael
Position & material:
PF (3F), tee joint between 10 mm thick mild steel, rolled flat bars with rolled edges.
Parameters:
All passes each side with 3.2 mm, 7018 (ESAB 48.00), DC positive, 120A, 30% arc force.
Left hand side consists of root + 2 + 3.
Right hand side consists of root + 2.
Rods taken straight from a freshly opened vacpac (nice )
Remarks:
I think @Robert Mullins made a vital point in @davidjohnperry 's thread regarding the root pass in vertical up fillet welds; namely, being careful not to "bridge" the root and thereby hamper penetration. I kept Robert's advice in mind. The venerable 48.00 does run beautifully, even in the hands of an amateur. I found maintaining a good line and avoiding undercut were probably bigger challenges than worrying about penetration (note toe on LHS). The rolled corners of the oncoming plate are obliterated and penetration is very good, although the cap profile isn't great at all. The necessarily slow travel speed and running at 120A with theses rods (which are excellent in PF) should nearly guarantee good penetration. I'm not sure I would even try to repeat this exercise with 6013, but am open to persuasion/goading!
Michael