How To Weld To Cast Iron. If theres a crack that youre trying to repair you need to properly dress it. Generally preheated welding is performed by.
Also move slowly in a stitch-like manner. Leave 13 of the Material Depth Thickness at the Bottom Clean the metal surface using either chemicals or a brush. However there are basically two approaches by which you can weld cast iron.
Welding cast iron works much better with repair jobs like cracked parts or when you drilled a hole in the wrong place and you need to fill it in.
However there are basically two approaches by which you can weld cast iron. If theres a crack that youre trying to repair you need to properly dress it. Work on one inch at a time and allow about 45 seconds for the segment to cool down before moving on to the next one. The most important thing to remember when welding cast iron is to move low and slow.