cast iron

[1999tig]

i need to weld some mild steel to some cast iron what rods do i need? whats the best way to do it?

thanks

 

[brightspark]

i need to weld some mild steel to some cast iron what rods do i need? whats the best way to do it?

thanks

braze it if u have oxyacetylene

 

[Welderpaul]

Bolts

 

[Paul.]

Depends on the type of joint, but one method is to put a buttering layer on the cast side of the joint using a nickel based electrode, then make the joint using a 6013 or a 7012 electrode, or for a small job just use a nickel based rod.

 

[Bill Edwards]

Typically you can do this just fine with an ordinary cast rod (high nickel content). I did once find a supplier who sold both cast to case rods and rods designed for cast to steel, but I didn't ask for details.
Brazing is only suitable under certain circumstances - i.e small stuff that can be heated and cooled in an oven or evenly with the torch.
When arc welding it make sure to keep it from getting warm and keep peening it.

 

[1999tig]

thanks for the help i will give it a go