Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
We only ever preheated and post heated with a torch. Took care to cook out any crap we couldnt clean off the surface. Prepped it with a flap disc and hit four heavy tac welds.
Burned it in with a Miller 252 mig.
Heated again with the torch and then wrapped up in a couple welding blankets. Done several shaves and tube welds this way.
Are you asking about welding the tubes to the center section, or welding brackets to the tube? From the replies it sounds like you are asking about welding the tubes to the center section, which means you are welding steel to cast iron.