You will also need a welder that can run low hydrogen rods.
It's for crack sensitive applications where harder alloy steels would suffer from entrapped hydrogen and resultant cracking... the H4 designation means 4 ml or less of diffusible hydrogen per 100 g of weld metal. It's not all that important for most mild steel applications, but it's more important on very heavy (25mm+ thickness?) weldments and low alloy steels.What's the low hydrogen for ?
I know nits about stick rods other than hardfacing and " standard all purpose supermarket" rods.
Just googled the mighty midget and apparently its AC but around 500hzThey'll run on any half decent inverter, Parweld. Jasic etc no problem.
If you're unsure about how they've been stored I'd redry them, it should say on the packs what temp and how long for. A domestic oven goes to 250 deg and this would be good enough for non-code work
We've put several drawbar eyes on agricultural stuff with low-hys, they're awesome for the job.
They'll probably run AC ok, but 7018 generally prefers DCEP to run nicely.
It's for crack sensitive applications where harder alloy steels would suffer from entrapped hydrogen and resultant cracking... the H4 designation means 4 ml or less of diffusible hydrogen per 100 g of weld metal. It's not all that important for most mild steel applications, but it's more important on very heavy (25mm+ thickness?) weldments and low alloy steels.
...but the main reason to use it with standard mild steels IMHO is because it runs beautifully in any position... Seriously, you can happily weld vertical-up and upside-down all day long with only a little bit of skill.
Its the go-to rod for in-position repairs.
Problem with it, for code work, is the drying and holding temperature requirements. If you need that H4 designation for the job, then you have to do exactly as the manufacturer says... and not everyone has a proper rod oven or heated quiver.
https://www.fabricatingandmetalwork...-the-basics-of-low-hydrogen-stick-electrodes/
They'll run on any half decent inverter, Parweld. Jasic etc no problem.
If you're unsure about how they've been stored I'd redry them, it should say on the packs what temp and how long for. A domestic oven goes to 250 deg and this would be good enough for non-code work
We've put several drawbar eyes on agricultural stuff with low-hys, they're awesome for the job.
They'll probably run AC ok, but 7018 generally prefers DCEP to run nicely.
Ran 7018 on Jasic, Miller, Esab, Lorch, IFL inverters, and Kemppi and Migatronic transformers no problems. They run smoothest on the Miller XMT, and also funnily enough, the IFL fusion, which is a very underrated machine!
"IFL fusion, which is a very underrated machine!"
Quite agree - but then I'm biased, having owned one for years!
All the Best,
CJ