How To Bronze Weld Cast Iron. Weld in very small points at a time not larger than 5-10 mm. In industrial applications cast iron parts such as exhaust manifolds can become tarnished and brittle.
Beveling the fracture and 2. It is best to consider these tips if you plan to use your MIG to weld cast iron. 2 Weld patches in place using short welds about 1 inch 25 cm long each.
The process does not require the parts to be pre-heated as necessary when full fusion welding cast iron.
2 Weld patches in place using short welds about 1 inch 25 cm long each. Repair cracks and rips by attaching a cast part that serves as a patch between intact parts of the cast iron. Use of a gas flame to heat the casting to its melting point is time consuming and can lead to surface oxidation but the high preheat of the base metal and the low cooling rate which results ensure that formation of hard phases such as martensite in the HAZ. Dont heat over 1400 degrees F since that will put the material into the critical temperature range.