Re: Tungsten electrode wear

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: BunnyKiller <bunikllr-at-bellsouth-dot-net> 

Hey Steve...

as Peter mentioned..    drill thru a bolt ( preferably a round head hex 
head 5/16 th")  and then insert rod and then crimp lightly in a vise to 
hold rod ...  use pure tungsten  first choice  (   lathanated  second 
choice  thorated 3rd choice) rods...

Pure seems to last longer for my system    thorated does burn off faster ( 
rounds out quicker and shortens faster) tried lathanated and doesnt seem to 
make  difference between this and pure....

the important part is your design in your SRG      triple ( one set 
front,  disc, and one set back) electrodes or ring style on the disc ( 
electrodes on the front disc has a ring to conduct to opposite 
electrode)  I seem to have problems with this design due to pre/post-firing 
( shows up as arc marks on the ring previous or post electrode placement) 
due to rotatoin of the motor in its mounts....

something to think about

Scot D



> >
> >Original poster: "S & J Young" <youngs-at-konnections-dot-net>
> >
> >Spark gappers,
> >
> >There is a trend for welders to use lathanated tungsten welding electrodes
> >to get away from the slight radioactivity of thoriated rods.  The lathanated
> >rods allegedly wear slower than the pure tungsten rods.  Does anyone have
> >RSG experience with both kinds to know which composition of tungsten erodes
> >less in spark gap duty?
> >
> >Thanks,
> >--Steve Y.
> >
> >P.s. innovative ideas for securing rods that extend from both sides of a RSG
> >disk would be appreciated.
> >
> >
>
>