Re: Weld on cast iron

Posted by John on February 03, 2004 at 12:22:15 from (12.158.102.116):

In Reply to: Weld on cast iron posted by Scottf on February 02, 2004 at 11:57:54:

Arc welding does create a magnetic field. Since the metal is lining up as if it were a crack, I would suspect a crack. I am not a fan of nickel rod. It does work on some cast if the moon is right, and the birds are chipping in tune and there is enough dirt left to fill the post hole. That being said, find someone with a cast welding torch and cast powder similar in properties to the piece you are welding and spray weld it with cast powder. Preheat then bury in the sand after welding or wrap in ceramic blanket. You may never have a problem with that weld, but get someone to check it with magniflux just to make sure. The normal place to crack is beside the weld where the two metals meet. The torches for cast powder are not real expensive and do a wonderfull job if you follow all the rules for cast. The weld will be the same color and equally as machinable as the origianal material.

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