Had another chat with the glass bead maker that wants me to fabricate some tooling . She 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 and some Invar42 nickel/iron filler . 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 .
- posted
5 years ago