Davek0974
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- Messages
- 918
- Location
- Hertfordshire
Here we go, some messing about.
Reading a few posts, it seems 40A per mm so 120A for my 3mm scraps, and double the current for wire feed so 240"/min is a possible combination so thats where i headed. First off i measured my wire feed - the readout on the R-Tech is annoyingly just a 'number' - no calibration. Didn't take long to find 24" in 6s and the readout was noted. Wire was 0.8mm ER70S6
Getting the current on the hand was a crap-shoot, the readout only works when welding so it was a case of blindly welding junk on the bench while looking at the display, sort of settled around 120A at 20.5v.
With these settings in mind I set some tasks - horizontal butt, horizontal fillet, 45deg fillet, vertical fillet.
As per earlier replies, I made sure to push always and also kept a check on torch angle.
Horizontal butt, 1mm gap, 3mm sheet.
Horizontal fillet, left to right, 3mm sheet, approx 3mm fillet depth on each leg.
45deg up fillet, 3mm sheet
Vertical up fillet, 3mm sheet - the hole near the top is not a blow through, its a pierce hole from the plasma cutter where the scraps come from.
Horizontal fillet again, 3mm sheet with mill-scale coating.
Time for some fun:- 6mm plate from the fire pit job, horizontal fillet, my machine wet the bed at 165A whereas the formula called for 240A? I cranked the WF at max and set the voltage to give a good sound - 22.5V seemed ok, the machine tops out at 23.5V
It seems a good weld, obviously dubious penetration due to low current, I have sectioned the part but not got anything to etch it with yet. Part of the section was treated to a "beat the crap of it" test and it did start to yield but with a fillet on both sides I feel it would be ok for my simple jobs.
Clearly my machine is suited to work up to 4mm maybe, without doing some serious bevelling and joint prep at least?
So, how do they look???
Reading a few posts, it seems 40A per mm so 120A for my 3mm scraps, and double the current for wire feed so 240"/min is a possible combination so thats where i headed. First off i measured my wire feed - the readout on the R-Tech is annoyingly just a 'number' - no calibration. Didn't take long to find 24" in 6s and the readout was noted. Wire was 0.8mm ER70S6
Getting the current on the hand was a crap-shoot, the readout only works when welding so it was a case of blindly welding junk on the bench while looking at the display, sort of settled around 120A at 20.5v.
With these settings in mind I set some tasks - horizontal butt, horizontal fillet, 45deg fillet, vertical fillet.
As per earlier replies, I made sure to push always and also kept a check on torch angle.
Horizontal butt, 1mm gap, 3mm sheet.
Horizontal fillet, left to right, 3mm sheet, approx 3mm fillet depth on each leg.
45deg up fillet, 3mm sheet
Vertical up fillet, 3mm sheet - the hole near the top is not a blow through, its a pierce hole from the plasma cutter where the scraps come from.
Horizontal fillet again, 3mm sheet with mill-scale coating.
Time for some fun:- 6mm plate from the fire pit job, horizontal fillet, my machine wet the bed at 165A whereas the formula called for 240A? I cranked the WF at max and set the voltage to give a good sound - 22.5V seemed ok, the machine tops out at 23.5V
It seems a good weld, obviously dubious penetration due to low current, I have sectioned the part but not got anything to etch it with yet. Part of the section was treated to a "beat the crap of it" test and it did start to yield but with a fillet on both sides I feel it would be ok for my simple jobs.
Clearly my machine is suited to work up to 4mm maybe, without doing some serious bevelling and joint prep at least?
So, how do they look???
