Jim Wilkins wrote:
"Larry Fisk" wrote in message
...
"Ed Huntress" wrote in message
...
Miller has a useful, short article on TIG brazing with silicon
bronze
up on their website:

http://tinyurl.com/y6xhcxa4

It's worth knowing about.

--
Ed Huntress
I just tig brazed a cracked swivel base on an old athol vise that
was cracked badly
used alum bronze. Rod flows really well on cast iron
preheated and used a pretty long arc and a sharp tungsten
100 amps max with a pedal
AC with the ac balance maxed out.
Used alum cause Jody at welding tips said it shrinks less.
Did seem to pull quite a bit but short beads and cooled in a bucket
of sand overnite.

Larry Fisk in Idaho
Hi Leon

Has anyone measured how hot they could preheat a chunk of cast iron on
a propane or charcoal barbecue?



If it's an all steel BBQ you can get up to around 500 with big burners
and high flow gas.
I've tossed an exhaust manifold in the fire of the shop stove before and
got it cherry red and then welded it with nickel rod. Tossed it back in
and let the fire die out, came back the next day and the weld was good.
Had to surface the mounting flange because it did move a smidgen. A
thick gasket would have covered it but I wanted copper sheet.

--
Steve W.