Shocking TIG

[Sparkey]

Well you should of left that bit out.
Top notch kit so you can't blame the welder lol.

ouch so i just have to keep at it then! How many amps should i use for metal that's not even a mm thick? The german lad that showed me how to do it was welding around 80!!! and he showed me and went like: easy....ja gut... but when i do it he keeps saying : ah kaput

 

[Tinbasherdan]

Stainless? I wouldn't be much over 50a, and probs more realistically somewhere down near 35-40a on the pedal

 

[Richard.]

ouch so i just have to keep at it then! How many amps should i use for metal that's not even a mm thick? The german lad that showed me how to do it was welding around 80!!! and he showed me and went like: easy....ja gut... but when i do it he keeps saying : ah kaput

80 amps on less than 1 MM. Doable maybe if not using filler clamped tight to a good heat sink and racing down at a rate.
I personally would be looking at tacking it with filler at around 50 amps then welding it also with filler at around 35-40 with a good backing bar behind it. Without a backing bar I'd be at 25 amps maybe 30 but you'll need an underside purge if you haven't a bar tightly clamped to the back.

 

[Richard.]

Pedals on DC are in my opinion a waste of time.
I cannot see a Benefit to using one on DC. Fixed set current is the way to go. It's a useful tool on Alu (not essential) but useful. Because of the very different current levels needed to break through the oxide layer and get the part heat soaked and actually welding on a heat soaked part.

 

[Sparkey]

Yes he welds it with filler and we have a copper heat sink behind the part but it isn't clamped at all....and yes he goes quite fast...easy ja?? Lol lucky the joint isn't too long about a centimeter and a half, we are finishing what the robot coulden't reach.

 

[Tinbasherdan]

Pedals on DC are in my opinion a waste of time.
I cannot see a Benefit to using one on DC. Fixed set current is the way to go. It's a useful tool on Alu (not essential) but useful. Because of the very different current levels needed to break through the oxide layer and get the part heat soaked and actually welding on a heat soaked part.

I always had one, so I used it agreed tho, I wouldn't go and buy one specifically for dc

 

[Richard.]

centimeter and a half,

ok. Well that's not too difficult. Even at high current it's probably not going to get chance to burn through or distort. Ask him to do it at those currents without it clamped down on a 200 MM run.

 

[Sparkey]

Oh yes believe me, even on a centimeter and a half i can manage to blow a hole in it

 

[Richard.]

Yes but your college sounds like he's very good at it and over time has managed to control things with travel speed and arc length. You don't need to be at such high current for that thickness. Learn to control it at a speed that's manageable to you and drop your current. I've been tig welding a little while and I like to think I don't hang about but that's too hot for me. Try at 40 sparks. If the copper is sucking the heat out too quickly step up to 50 and so on . You'll find one that's right then practice till you feel happy to speed up.

 

[Sparkey]

Thanks i wil see how i get on today!

 

[Richard.]

Thanks i wil see how i get on today!

Good luck. Some pics of the results both good and bad would be good.

 

[Sparkey]

Good luck. Some pics of the results both good and bad would be good.

I'm sorry but pics are not possible.... it's BMW parts and we are just starting the production line up at our plant so there's bosses all over the place....not sure they would like that!
But i'm slowly feeling more confident now my welds improve (set the machine at 50 amps ) and that seems to work for me. I only took 2 or 3 "love tickles" today so i'm chuffed

 

[Rrunnach]

I only took 2 or 3 "love tickles" today so i'm chuffed

Love tickles, can this be found in a how to tig weld manual?

 

[Sparkey]

Love tickles, can this be found in a how to tig weld manual?

Hehe yeah: eSCHEn 's TIG welding manual page 1!

 

[norlander]

BMW- hmmm-that bloke teaching you probably has a more developed right wrist than you would have then.

 

[norlander]

so there's bosses all over the place.

I just noticed that-theres your problem -bosse in french is lump or bump, a bumpy road is la route pleine de bosses, so that impedes smooth progress.
Get rid of them bosses and things should smooth out for you.

 

[Sparkey]

BMW- hmmm-that bloke teaching you probably has a more developed right wrist than you would have then.

Dunno what to answer on that... there's 2 possible answers...1 a serious reply or 2 i get ALL the mods on my back!! Better say nuffin' then

 

[Rrunnach]

Better say nuffin' then

That'll be a first

 

[Sparkey]

That'll be a first

Hehe nooo don't want Wozzles to kick me out of the forum because of my family unfriendlyness.... if that word even exists...

 

[Rrunnach]

Oche, Wozz wouldnae dae that