How To Cold Weld Cast Iron. Also move slowly in a stitch-like manner. Preheating and slow cooling of the component is the crux for the cast iron welding procedure.
The proper way to fix one is to dril tap and pin the crack with overlapped threaded pins. Cast Iron Cold Welding Steps. WelddotcomIn this episode we take a look at welding Cast Iron.
There was a fantastic video on YouTube on the topic that demonstrated the problem with trying to weld a constrained cast iron crack.
Welding cast iron has two schools of thought one is hot and the other is cold welding. A ball-peen hammer to prevent cracking can do it. You can weld 1018 low-carbon steel to cast iron using shielded metal arc welding SMAW and a nickel-based ENiFe electrode. Preheating the cast iron part before welding will slow the cooling rate of the weld and the region surround the weld.