Tig welding cast iron?

[DPSwelder]

Hey guys I want to Tig weld some cast iron, but I don't know what kind of tungsten I need to use, And what filler I need?

[Jtsharp]

Tig welding cast iron?

What are you welding? (Vise. Repairing a casting?)

[DPSwelder]

Tig welding cast iron?

Engine block

[Fishy Jim]

You need high nickel rod or it'll crack as it cools.

[eecervantes83]

Hey jim
I stick weld cast with utp55 rodwhats that equal to in tig rod?

[DPSwelder]

Tig welding cast iron?

And if I was welding on a vise or old yard art I can use stainless. 308 filler?

[Fishy Jim]

You can scrape the flux off your electrodes and use those for filler with TIG.

I've had no luck with anything cast iron and 308/309. Doesn't matter if I preheat, acetone soak, sacrifice animals... always cracks on me right as I think it's going to hold. TING!

[eecervantes83]

Get you some fire bricks
Build yourself 3 walls and a plate ontop to enclose the heat . Use a fiberglass blanket and wall insulation.
Weld as u normally do . And right as your done shove it into the enclosure. Pack it with insulation and wait 24hours . Itll cool down really slow .its always worked for me .

[DPSwelder]

Tig welding cast iron?

Ok thanks

[JerseyWelder]

Ok thanks

I have tigged with I think monel /nickel 60 rod or something with good results. Generally 60-60 nickel rods are good. I have also used stainless but despite being very strong it does not tolerate flex AT ALL....

[big mike]

Eureka 5545 or Crown 55/45-10

[74camino]

I use certainum 89

It's a awesome alloy. I use it for cast iron turbo exhaust housings to put a v-band flange on. I've never pre or post heated any cast iron using this filler. I've never had a v-band flange fall of or the weld crack. The stuff is not cheap per lb though.

[Rhinox]

Tig welding cast iron?

We have used nirods for few pieces of casting with tig, but we also done same pattern as usual
Pre-heat /post heat+ wrapped it in a sandbox for the night!

Worked well!!