I have done this successfully before, using backyard standards. First take
the burning tip on your gas rig and heat the cast iron as hot as you can,
uniformly. I welded a block and could not get it cherry red but I was able
to get it pretty hot. Use Nickel rod and weld the crack with a buzz box.
For finishing touch, get the gas rig out again and braze the area with brass
rod and flux.
-----Original Message-----
From: owner-spitfires@autox.team.net
[mailto:owner-spitfires@autox.team.net]On Behalf Of Dave Simpson
Sent: Wednesday, September 06, 2000 9:30 PM
To: Spit Listers
Subject: welding cast iron
To list
>From my limited experience, welding cast iron borders as much on the art
of welding as much as the science of welding. The experience level of the
welder is most important, cleaning and preheating is a must, the use of a
nickel rod is an older but effective technology, used to be a practice in
high temperature ( 700 to 1000 degree F) dissimilar metal welds, most
vendors have their own opinion on their current "wonder" rods for welding
cast
To make a long story short welding cast iron is chancy and use the most
experince person you can find
Dave Simpson
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