The process of welding cast iron has some special procedures. Since it is a challenging task, people can’t have two different opinions about the same. Unlike most other metals, cast iron has a greater content of carbon. This is the reason why cast iron is brittle which makes it really difficult to weld. If people follow some proper instructions, then the task of welding cast iron can be done at ease. Read more here, really very good article about procedures for welding cast iron.