hotponyshoes
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I have got some 15kg spools of lincoln 71e-h all position going chep if you want to try one. I think it's all 1.2mm though
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Dcal
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I was welding some 2mm sheet into an oil drum and ran out of argon.
I'm putting an emersion heater into the drum to see if I can reduce the time it takes to de-rust using citric acid.
It being Friday evening and BOC don't do weekends, I can't get any until Monday, so I thought I'd have another go with gasless.
I bought a 5kg roll of 71T-GS in 0.8m from one of the local welding supply shops a while ago for just such an occasion.
It’s no name Chinese, but came well wrapped up in vacuum shrunk foil and was £50+ which I thought was rich enough.
No idea of an actual make just what’s on the label
Did a bit of a search and got parameters for 71T-GS
Changed the polarity on my welder and put in a knurled roller and tried it out.
My welder only goes down to 15.5V so it's maybe not ideal for really thin stuff but gave it a go anyway.
Tried15.5v and 3.5m/min wire speed and it worked OK.
It blew through the oil drum in a few places but I was able to fill the holes by concentrating the heat on the weld.
There is lots of splatter but it cleans up well enough.
I will see if it holds water tomorrow.
While I was at it I tried a butt weld on the 1mm thick oil drum steel.
I turned the wire speed down to 2.5m/min
It is very easy to burn through while tacking up, however if you get a few tacks made it's easy enough to make a joint.
Not pretty but looks soundish.
I tried on the flat (not great) V down was better (but still not great) and V up which seemed to work best.
It doesn’t like you going over the welds to fill holes but cleans up quite well.
The spec only recommend single runs, so fair enough
For 2mm up I think its fine / good, for fillets / vertical up it's brilliant.
1mm and less is harder work but with a bit of practice I'd say it would get you out of a hole.
If it's your only option it far better than no welder.
Spec says it will work down to 14v so with a different welder it might work better on body work.
I have some of the small rolls from Lidl (0.8 and 0.9) so might give them a go to see how they run.
I'm putting an emersion heater into the drum to see if I can reduce the time it takes to de-rust using citric acid.
It being Friday evening and BOC don't do weekends, I can't get any until Monday, so I thought I'd have another go with gasless.
I bought a 5kg roll of 71T-GS in 0.8m from one of the local welding supply shops a while ago for just such an occasion.
It’s no name Chinese, but came well wrapped up in vacuum shrunk foil and was £50+ which I thought was rich enough.
No idea of an actual make just what’s on the label
Did a bit of a search and got parameters for 71T-GS
Changed the polarity on my welder and put in a knurled roller and tried it out.
My welder only goes down to 15.5V so it's maybe not ideal for really thin stuff but gave it a go anyway.
Tried15.5v and 3.5m/min wire speed and it worked OK.
It blew through the oil drum in a few places but I was able to fill the holes by concentrating the heat on the weld.
There is lots of splatter but it cleans up well enough.
I will see if it holds water tomorrow.
While I was at it I tried a butt weld on the 1mm thick oil drum steel.
I turned the wire speed down to 2.5m/min
It is very easy to burn through while tacking up, however if you get a few tacks made it's easy enough to make a joint.
Not pretty but looks soundish.
I tried on the flat (not great) V down was better (but still not great) and V up which seemed to work best.
It doesn’t like you going over the welds to fill holes but cleans up quite well.
The spec only recommend single runs, so fair enough
For 2mm up I think its fine / good, for fillets / vertical up it's brilliant.
1mm and less is harder work but with a bit of practice I'd say it would get you out of a hole.
If it's your only option it far better than no welder.
Spec says it will work down to 14v so with a different welder it might work better on body work.
I have some of the small rolls from Lidl (0.8 and 0.9) so might give them a go to see how they run.
God mode restorations
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Some times you can get a roll and get good results from it. Other times it's crap. Lincoln make flux core that can be used in all positions but its very expensive.
davidjohnperry
a different breed
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Dcal
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- Antrim Northern Ireland
The main question I have is why is E71T-GS so difficult to use compared to solid wire for welding 0.8mm butt joints in steel? Especially overhead.
I can weld this type of joint in solid wire with very little difficulty but with gasless it's a nightmare and the deposited weld will look awful.
Also, is it ok to apply a second (or third) run over the weld to fill the holes and porosity, after grinding out the worst of the deposited weld.
Any spec I can find on the web says single pass but I find it impossible to make an overhead butt without burning through, so some (or a lot) of rework is necessary.
Have you welding parameters for this joint or a link to video where this type of weld is performed?
As my last post, the wire I have had the best success on thin steel is probably from China however there is next to no information on the packaging.
For 2mm thick steel up I find it very good and for positional welding I find it easier to use than solid wire.
Munkul
Jack of some trades, Master of none
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Current density of cored wire is much higher than that of solid wire, so the transfer acts differently. When ran in normal parameters it works in spray transfer which is much too hot and penetrating than solid wire at the same amps. The slag doesn't let you stitch-tack like you can with solid wire either, at least not as cleanly and consistently.
Short circuit MIG with solid wire is probably the "coldest" welding process that works well for most thinner steelwork. Anything that isn't short-circuit MIG will put more heat input in.
Basically it's a different animal, you'll never get a cored wire that works as well as solid wire at low current.
At medium and high currents they can work very well compared to solid wire out-of-position, but not at low current.
That's the main reason people are forced to solid wire with gas for welding cars etc.
For bodywork and non critical work I don't see why you couldn't put more than 1 run down
Dcal
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- Antrim Northern Ireland
I still have this gasless wire in the welder (even though I now have gas) and needed to weld some 2mm sheet to 2mm galv sheet.
It's supposed to be good for galv and as I was welding outside I thought I'd try it out and see how I got on.
It's for a vapour blaster I'm building (slowly) and this was for the openings for the gauntlets.
I royally messed up cutting one of the openings and ended up with a quarter inch gap the whole round, the other was ok with a couple of mm.
I have to say even though it's a waste of wire (at £10/kg) it filled the ridiculous gap fine
Settings were 15.5v (as low as my Rtech will go) and 2.5m/s when filling the gap and 3.5m/s when there was reasonable fit up.
I have to say for anything 2mm and up to 5 ot 6mm (and as long as it's not for anything critical) it's a pretty good process.
It's supposed to be good for galv and as I was welding outside I thought I'd try it out and see how I got on.
It's for a vapour blaster I'm building (slowly) and this was for the openings for the gauntlets.
I royally messed up cutting one of the openings and ended up with a quarter inch gap the whole round, the other was ok with a couple of mm.
I have to say even though it's a waste of wire (at £10/kg) it filled the ridiculous gap fine
Settings were 15.5v (as low as my Rtech will go) and 2.5m/s when filling the gap and 3.5m/s when there was reasonable fit up.
I have to say for anything 2mm and up to 5 ot 6mm (and as long as it's not for anything critical) it's a pretty good process.
