Welding tungsten to stainless

some tooling . SAhe needs some mandrels made that are a piece of
tungsten rod welded/brazed to a stainless steel handle . The join is not
subject to the full heat of molten glass . Am I right in assuming that a
TIG torch set on DCEN will melt and fuse these two metals without filler
? What filler is recommended ? I have on hand 308 309/309l , and some
312 in various sizes . I also have some ER70S2 on hand . She indicates
that these must be pretty straight , no wobbles when they are spun or
rolled across a flat surface . I'm thinking a long vee block with a
cutout in the middle , maybe a spring on one end to keep things pushed
together . We're getting into uncharted territory here for me , I'm open
to suggestions - that pertain to the task at hand , please .
Reply to
Terry Coombs
Loading thread data ...
If you touch your tungsten to either of these metals they seem to fuse rather well to the tungsten. So, I guess welding them would work just as well. They might be rather brittle after welding, so keep it straight to start with, as I don't think it will stand much bending to straighten it out.
Not really knowing at all, I would go with 309 filler, since that's what used for dis-similar metals, if needed at all.
Randy
Remove 333 to reply. Randy
Reply to
Randy333
function on my Everlast TIG/stick/spot inverter welder ...
Reply to
Terry Coombs
Through the years, I have welded stainless to mild steel a number of times. I was told to use a higher chromium content rod than the parent metal, and it has worked OK. DCEN sounds right to me. Personally, I would just TIG weld it. If you could get a scrap of the stainless tube, try a test weld. My experience with welding stainless is that it tends to move around a lot when you heat it.
Good Luck, BobH
Reply to
BobH
afternoon , I'm going to build her a fixture . They are attaching pieces of 1/16" , 1/8" , and 5/32" TIG electrodes to some 5/32" ER316L filler rod pieces . What I will be doing is building them a fixture so they can silver solder their own tooling together .
Reply to
Terry Coombs
I was curious how what you were describing worked for beads. I was envisioning the tubes that I see them use at the glass blowing shops, but it didn't make sense for beads. Now it does...
BobH
Reply to
BobH

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.