NickyEng
Brown belt in Origami
- Messages
- 830
- Location
- Argyll Scotland
Matt, I was giving him rough settings to try and get him running in spray transfer. I recommended 21v and got him to start at 350 IPM then 375 IPM then 400ipm, increase his gas and suggested a tweak on inductance but that's preset to ten anyway.Inductance will only effect the start ignition characteristics or if welding in dip transfer as it controls the current rise time from the short circuiting. You should really only change it when moving from working in the short arc range, to spray mode.
It seems to me like lack of gas could be one major issue, 4lpm is way to less. I see that you turned it up, but having 15lpm on a MB 15 type torch with a very small narrow gas shroud could also be as bad as the flow of the gas maybe vortexing and dragging in atmosphere.
Also, regarding the settings, Aluminium, welds much better from a non pulse machine if you can get into the spray arc.
Try these to start (very rough guide)
1mm Plate
13-14v 4-5m/min
2mm
15-16v 7-8m/min
3mm
18-19v 8-9m/min
4mm
22.5/23v 10m/min
5mm
23-23.5v 11m/min
6mm
23.5/24v 12m/min
If you machine is 200 amps,
around 200 amps, would be roughly
24.5v 12.5m/min
Your chosen setting of 21v and 8.9m/min will put you into the mixed arc range and will be very unstable and not a nice arc condition for welding. If you need to keep that setting because it suits your material thickness, then either increase the wire feed to around 9.5m/min for 21v or reduce the voltage to 19v for 8.9m/min.
None of these settings work