ghound
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It's only a small 200amp (Chinese via Germany) welderWhat machine are you running ? Wire diameter ?
Have a try on on free mill scale material and you will notice a huge difference , way more stable .
Pay attention to heat and tips wearing : pulsed machines can cook torches easily and tips get worn quickly expecially at high amperage , you will notice it because the wire will start to be erratic .
Consider that a 400 amps pulsed mig would require a 600 amps torch , with proper cooling lines , try binzel copper tips with silver coating , they will last longer .
Sure what's not made in China lolOk so no heat problems I guess .
British or european brands were not affordable to you ?
Pay attention to heat and tips wearing : pulsed machines can cook torches easily and tips get worn quickly expecially at high amperage , you will notice it because the wire will start to be erratic .
Consider that a 400 amps pulsed mig would require a 600 amps torch , with proper cooling lines , try binzel copper tips with silver coating , they will last longer .
OK, I'll have to do some hunting then. It certainly is counter intuitive as one of the main reasons for using pulse is to reduce heat input. It does that by turning the power (nearly) off for a good portion of the time.Well I don't know exactly the technical reason , but pulsed arc generates way more heat when welding at high amps , I think it's because of current peaks and high frequency ( try Fronius , Selco , Ewm ... ) .
Peaks of current push the wire to dig the contact tip so after a while the hole in the tip becomes shaped like a slot .
All big torches we purchased had a fact sheet with pulsed recommendations as they could lose duty capacity .
Good choice, which model Stahlwerk? I've been looking at this:Sure what's not made in China lol
It's a Stahlwerk welder with a decent reputation/guarantee.
No probs with heat, I'll mostly be using the pulse mode for 3.5mm, and standard mig for .9mm, it's actually quite good on the thin stuff in standard mig.
Hell yeah , I cooked my face a couple of times with pulsed arc , learnt it the hard way , nothing crazy but it would have been better to not experience that .Pulse MIG - my only advice is "cover yourself up".
Yes that's the one i bought.Good choice, which model Stahlwerk? I've been looking at this:
https://www.ebay.co.uk/itm/155024419711?epid=1655835282&hash=item24182ceb7f:g:eEMAAOSw-h9j66VM&amdata=enc:AQAHAAAA4FG38e7gnaj04aMm2nLSTWRAhygrVE8TzoXoVYS0JA94W66MMn8RTFzgun4p6iB0uJAB4osGpHam3exMnDrm1i2DlS+iDgfz0rNGlCnVTKYX79szF5pLGJIGZazdYp2/kHR9vK2TerM2xLkKHnVttVb3We5ZYHe722tMutxIOcUYxoNNtZKr3iKX7P1z8+EirsIad/aQOlIMDOQlO9h88VK5+Lsa9pSI9lGnz6F/sIS/FWGCLZLfEjXrYy6/e2EPVkweq5kkRzeFsfqNSXOoqZjkHd/mwLybstfJXU3OcANO|tkp:Bk9SR9LepLXLYQ
But it doesn't have settings for .6 wire which I prefer for some things so that would have to be manual.
Partly it heats the torch more because it's always in spray transfer with an open arc, so more radiant heat and UV.OK, I'll have to do some hunting then. It certainly is counter intuitive as one of the main reasons for using pulse is to reduce heat input. It does that by turning the power (nearly) off for a good portion of the time.
Jack
Partly it heats the torch more because it's always in spray transfer with an open arc, so more radiant heat and UV.
Partly because high peak currents cause more resistance heating in the torch as the current is transferred.
IIRC Binzel say to derate their torches by 20% when using pulse.
don't forget voltage is also a pulse variable.Thanks. I think the discrepancy is in how the machines are specified and built - there is no standard.
Smaller machines like the EWM Picomig 180 and 220 puls have a maximum pulse current equal to or slightly more than the rated (non-pulse) current. That would make the average pulse current markedly less than the rated current.
Some larger machines in the 300 and greater amp class, have a peak pulse current up to double the rated current. It will be these that are getting hot.
I was only familiar with the first group. It is surprisingly difficult to extract some of these details from the manuals.
Jack
It is a parameter but not very often a variable. But yes, I do understand its affect.don't forget voltage is also a pulse variable.
I understand that point of view but I like to know how things work and why. I guess I suffer from chronic curiosity.IMHO, stop thinking about it in such specific terms, it's far easier just to take the word of experience from the likes of Binzel who make and test the torches...