I have 300A max range on my plant.It's more about how many amps your machine has available.
I'd use a 75°-100°C preheat if i had 300A available.
Can you not get a puddle going?I have 300A max range on my plant.
Also I have a few Tempilstiks around your suggestion and higher. Unfortunately not getting the desired result.
Thank you for your reply Brad.
No there is something else at play preheat won't improve your penetration by a massive difference.Puddle running fine, not happy with the depth of penetration.
The balance setting is fine, nearly maxed out on my Amps.
Putting it down to the preheat.
Don't want to overheat and compromise the material.
No there is something else at play preheat won't improve your penetration by a massive difference.
You either need more amps, more DCEN or a mixed gas to improve penetration by a large amount.
It could be down to how you're adding filler or your torch angle.
Is the joint well cleaned? Oxide is difficult to breakdown, oxide left on the edge of the top fillet piece can cause poor penetration.
Agree about the Amps, unfortunately can't do anything about that.No there is something else at play preheat won't improve your penetration by a massive difference.
You either need more amps, more DCEN or a mixed gas to improve penetration by a large amount.
It could be down to how you're adding filler or your torch angle.
Is the joint well cleaned? Oxide is difficult to breakdown, oxide left on the edge of the top fillet piece can cause poor penetration.
Without seeing some cut & etch and watching you weld through a mask it's gonna be hard to diagnose the problem over the internet i'm afraid.Agree about the Amps, unfortunately can't do anything about that.
Pure Argon is my only option for gas.
Happy with balance setting for minimal cleaning.
Work piece clean and wiped with Acetone prior to welding.
Testing early in the new year.
Still got time to work on technique if that's the issue.
Thanks again Brad.
What does your welding procedure state that your are testing to, or are you doing welding procedure qualification?Hi,
I'm attempting a qualification soon on 15mm thk aluminium plate.
It's just a basic 8-10mm fillet.
Looking for some pre-heat guidelines.
Any help would be greatly appreciated.
15mm plate is pretty thick, what’s the reason for doing a test on that thickness? Are you doing a procedure test or a welder qualification test? If it’s the latter then 5/6mm thick would be more than ample (depending on the standard that you are testing to).Hi,
I'm attempting a qualification soon on 15mm thk aluminium plate.
It's just a basic 8-10mm fillet.
Looking for some pre-heat guidelines.
Any help would be greatly appreciated.
Is etching necessary on alluminum?Without seeing some cut & etch and watching you weld through a mask it's gonna be hard to diagnose the problem over the internet i'm afraid.
All you can do is get someone local experienced to look over what you're doing, Some of the testing companies could probably help.
Yes It's a Company Procedure, already passed the double V full pen on the same material.15mm plate is pretty thick, what’s the reason for doing a test on that thickness? Are you doing a procedure test or a welder qualification test? If it’s the latter then 5/6mm thick would be more than ample (depending on the standard that you are testing to).
All good answers below, maybe also try adjusting your travel speed, I see a lot of people get moving too quickly off the start.
Also torch angle and arc length, watch the root of the joint to see it melt. Also, how you feed the rod, try to push the rod into the puddle a bit.
What machine are you using?
What is your gas flow or torch set up etc?
Woah there's your problem, you're probably chilling the pool with all that gas.Yes It's a Company Procedure, already passed the double V full pen on the same material.
My new machine is the Kemppi MASTERTIG 355.
My gas flow is 20 ltrs per min.
Hopefully get a chance this week to have another go at it.
Thank you for your input.
Thanks Brad, I'll try that.Woah there's your problem, you're probably chilling the pool with all that gas.
10LPM tops i would say. Maybe 12 with a gas lens.
Ah ok, so the 15mm is to get a better range, but will the company actually be doing any Ali fillets above 20mm?Yes It's a Company Procedure, already passed the double V full pen on the same material.
My new machine is the Kemppi MASTERTIG 355.
My gas flow is 20 ltrs per min.
Hopefully get a chance this week to have another go at it.
Thank you for your input.
If you are you welding heavier stuff regularly then maybe pulsemig would be the better choice? But if you have to stay with TIG and are struggling to get root fusion on 15mm, then thicker will be even tougher.Yes, it's common place for us to weld heavier aluminium.
I only use pure Argon but have spoken to management about the Argon/Helium mix.
The flow rate was suggested and calibrated by the weld examiner.
Due to pre-xmas workload, I've not had a chance to try Brad's gas flow suggestion. Fully intend to early in the new year tho.
Thanks for your reply
All the very best.