How To Weld Aluminum Cast Iron. If it turns black its Mag. So you can simply put the welded cast iron into the sand to cool slowly.
For welds needing deeper. If it turns black its Mag. Dont apply a rapid cooling technique like quenching the weld in the water or compressed air.
Normally when you are learning how to weld Cast Iron you would pre-heat the base metal to at.
Welding aluminum is challenging even for experienced welders. You can do the preheating task by using your MIG welder. The best thing to do is to place a clean rag in your chosen solvent and use it to clean up each of the parts you wish to weld before bringing them together. This model of rod is also best suited for applications that require high-heat up to 1400 degrees like fixing cracks in blocks or cast iron exhaust manifold.