Why would it not work?..well for one, typical gold alloys like a
reduction or neutral atmosphere for clean welding. And a palladium
alloy might need an oxidizing flame for the best weld. Maybe. Thats
why I ask the question.
Thanks for the replies and offers to tackle this for me with a laser.
but I have no problem, just thoughts about a future project and how
to advance my progress as a metalworker. I guess what I am really
looking for is on the technical side of a palladium gold based weld
of dissimilar metal alloys. I can of course do the needed experiments
and run my own tests but was hoping the info in laymans terms was
easy to find and out there already. The proverbial needle.
Can the metal marry consistently, without porosity problems, and have
reasonably good strength to undergo say. some stressful compression
and stretching/bending ? I have welded palladium white gold to yellow
golds many times but never to nickel gold that I remember… and
never where there would be a great deal of stress… and although
I’ve had palladium in my drawer for 14 years, I haven’t done much
with pure or close to it, palladium. I’m approaching old age now and
a lot of my memory is becoming subtle… So when the thought came to
me wondering about the stress, malleability, strength of these
dissimilar white metal welds I realized I don’t know very much about
Perhaps re tipping white nickel gold might be better done with a
palladium white. but I read online (which may or may not be good
I personally take most of the web with a grain) that
often a palladium gold joined to another alloy will discolor at the
join as time goes on… I don’t know.
Is the weld though it looks/appears sound, is it really rock solid
and can it take the abuse (sometimes) of having stress put on it?
Most of the time when I marry the two different metals I get in and
out with a hot neutral flame so as not to stay in a eutectic zone and
ruin the piece(s) Is this true for palladium and nickel? ? Do I need
to be concerned about that? Don’t know. Never tried to let it melt
down so I don’t know. So with some time on my hands last week I
started to think about experimenting. thats how these thoughts came
to the list.
And then there is the question of casting 14k palladium white. my
refiner doesn’t have that last I talked to them…such
as casting temps and in regular investment vs a higher temp platinum
investment flask. Do we need the denser higher temp platinum
investment to cast 14k or 18k palladium white golds?