- Thread starter stoksey25
- Start date
Hi there thanks for your quick reply I am welding mild steel with normal rods but the welds are not great . I have done alot of mig welding and I thought I could get a nice weld ( even and straight ) but with this new inverter it looks like bird poo and ideas cheers Neil
Woody.v8
Blue gluer
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1.5 will do the job, but go steady!! As for electrode neg, Its more for special applications and i wouldn't worry about it until you have laid some decant looking welds on electrode pos
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Check out the Miller welding calculators
Regarding the bird poo thing, are you trying to weld on an exhaust system or is it one you've built yourself from normal steel tube? Many exhaust parts are aluminium coated which is why they're a bugger to weld.
Regarding the bird poo thing, are you trying to weld on an exhaust system or is it one you've built yourself from normal steel tube? Many exhaust parts are aluminium coated which is why they're a bugger to weld.
matt1978
www.lorch.eu
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Regarding Electrode + or Negative -......its not for special applications, it just means the distribution of the 'Heat'. 1/3rd is at the Negative- pole and 2/3rds is at the Positive+ pole, some rods run better on DC- and some rods will run better on DC+.
If your using normal 6013 rutile electrodes on thinner material, I usually find that the electrode runs smoother and doesn't overheat as much on DC-.
So just to re-cap, if you have the electrode holder plugged into the -pole, then 1/3rd will be at the Electrode and the 2/3rds will be on the workpiece via the welding return clamp....earth lead.
In General terms, the Tig torch is always connected to the DC- pole, if it was connected to the DC+ pole, then you would destroy the Tungsten.
On Mig welding the torch is plugged into the DC + pole, so the filler wire has 2/3rds.
If your using normal 6013 rutile electrodes on thinner material, I usually find that the electrode runs smoother and doesn't overheat as much on DC-.
So just to re-cap, if you have the electrode holder plugged into the -pole, then 1/3rd will be at the Electrode and the 2/3rds will be on the workpiece via the welding return clamp....earth lead.
In General terms, the Tig torch is always connected to the DC- pole, if it was connected to the DC+ pole, then you would destroy the Tungsten.
On Mig welding the torch is plugged into the DC + pole, so the filler wire has 2/3rds.
Drains
Yeah, nah.
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I'm with Matt on the dc- on small rods.
The big problem is those bloody awful Machine mart rods. I had to do some overhead welding the other day where all that was available was machine mart rods. I couldn't do it. I couldn't see the weld pool, the slag just wouldn't freeze and kept covering the work, so lots of slag inclusion / separated weld. Horrible.
The big problem is those bloody awful Machine mart rods. I had to do some overhead welding the other day where all that was available was machine mart rods. I couldn't do it. I couldn't see the weld pool, the slag just wouldn't freeze and kept covering the work, so lots of slag inclusion / separated weld. Horrible.
