malleable iron is cast iron but its been heat treated to "soften it". It can be welded fairly straightforward with a Nickel Iron Cast Iron Rod.
If everything is "right" it is possible to use a LoHi but without knowing all the details its impossible to guess. Worst thing that can happen is that it will crack and fall off. If that doesnt matter you could give it a try and if it fails do it with the NiFe.
Cheers. I've got some Nickel-Iron in stock, I may have a go with them. Presumeably because the iron has been softened pre-heating the job and slow cooling won't be necessary?
I've done this a several times with LoHi's and they came out pretty well, no preheat necessary. A couple of times I did have to grind the weld down and put another run over the top as the first ones seemed to be a bit porous.
I recently welded some small malleable iron fittings onto some m/s pipe. With m/s wire. Ahem. Should I give them a good smack with the old persuader, and if they fall off, do it again, properly? Or just do it agin anyway?
I recently welded some small malleable iron fittings onto some m/s pipe. With m/s wire. Ahem. Should I give them a good smack with the old persuader, and if they fall off, do it again, properly? Or just do it agin anyway?
I often weld malable gate hinges (about 1/2 to 3/4 inch thick) to steel posts (aprox 5mm) around the smallholding using standard mig wire / gas. This seems to work fine & holds the gate even when cows are trying to force it open.