Materials
Can you tig welding cast iron?
Quick answer
Yes — yes with ENiFe rod — maximum control. TIG on cast iron: stick with nickel (ENiFe) rods, low and slow with preheat; filler ENiFe-CI.
The verdict and why
Yes with ENiFe rod — maximum control. Preheat 100–250°C, short staggered beads, peen each pass, cool slowly under a blanket — rushing it cracks the job
Watch-outs
- grind the casting skin off, drill small stopper holes at crack ends
- Prep: grind the casting skin off, drill small stopper holes at crack ends