Re: Tungsten Carbide

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

Original poster: "brian by way of Terry Fritz <twftesla-at-uswest-dot-net>" <ka1bbg1-at-mcttelecom-dot-com>

Hi, sounds like carbide inserts to me. the gold ones are coated with
titanium and other exoctic materials for wear resistance. if you grind the
gold off then you can silver solder them to brass or steel. Any good
machinist or for that matter any saw guy that installs new carbide teeth
into saws can probably silver solder them. I have made many lathe tool bits
from insets that way. if there is a hole use a stailess cap screw for a
connection. cul brian
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, January 24, 2001 7:06 PM
Subject: Tungsten Carbide


> Original poster: "David Huffman by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <huffman-at-fnal.gov>
>
> I recently received some cutting bits for a large machine. The person I
got
> them from told me they were tungsten carbide. I was hoping to use them for
a
> spark gap but I think they may be some other material. The 'carbide' bits
I've
> seen in the past were very shiny metallic pieces. These cutters are dull
almost
> carbon like in appearance. The guy gave me 9 pieces total. Four of them
are
> plated a gold color and measure conductive with an Ohm meter. The other
five
> have the dull carbon look and vary in resistance. They are extremely hard
and
> heavy, I can scratch a steel file with them. The problem as I see it will
be
> making an electrical connection to them. Anyone have some idea how to test
this
> material? The pieces are disc shaped about 25mm in dia. by 7mm thick with
a
> tappered hole through the center.
> As soon as time permits I will set them all in series to see if they work.
>
> Dave Huffman
>
>
>
>