TCE Uranium glass

Will someone direct me to info on Corning 3320 or Kimble EN-3 uranium
glass? I would like a referenced cite to TCE (temperature co-efficient
of expansion)

Thanks

boer

boer writes:

Will someone direct me to info on Corning 3320 or Kimble EN-3 uranium
glass? I would like a referenced cite to TCE (temperature co-efficient
of expansion)

Coincidentally, I just asked about the expansion coefficient of uranium
glass on a materials newsgroup but haven't seen the replies yet. The
Apparatus Drawing Project has shop drawings for a Balmer Series Spectrum
Tube and says to use a bead of uranium glass to attach the tungsten
rod to pyrex for the electrodes. Oddly enough, the CRC book (64th ed)
doesn't have the information, nor does Strong's Procedures in Experimental
Physics.
--
Ignorantly,
Allan Adler
* Disclaimer: I am a guest and *not* a member of the MIT CSAIL. My actions and
* comments do not reflect in any way on MIT. Also, I am nowhere near Boston.

Allan Adler wrote:

boer writes:


Will someone direct me to info on Corning 3320 or Kimble EN-3 uranium
glass? I would like a referenced cite to TCE (temperature co-efficient
of expansion)


Coincidentally, I just asked about the expansion coefficient of uranium
glass on a materials newsgroup but haven't seen the replies yet. The
Apparatus Drawing Project has shop drawings for a Balmer Series Spectrum
Tube and says to use a bead of uranium glass to attach the tungsten
rod to pyrex for the electrodes. Oddly enough, the CRC book (64th ed)
doesn't have the information, nor does Strong's Procedures in Experimental
Physics.

My interest is in artwork and the 480C working temperature for glass to
metal seals. "Geissler tubes" and "depression era" glass. Some time on
google didn't yield results. Corning and Kimble sites did not have any
useful data. 7740 glass is a boro glass with some(1%)? dopinging of
uranium. Are you a glass blower/scientific glass fabricator. Uranium
glass also used in fabricating tubes of years gone by.

boer

This site http://www.kimble-kontes.com/pdfs/pr...mble_glass.pdf
has Kimble information but not this glass. Perhaps you should e-mail Kimble
or Corning

--
Mike Firth
Hot Glass Bits Furnace Working Website
http://users.ticnet.com/mikefirth/hotbit46.htm Latest notes

"boer" wrote in message
...
Will someone direct me to info on Corning 3320 or Kimble EN-3 uranium
glass? I would like a referenced cite to TCE (temperature co-efficient
of expansion)

Thanks

boer

I second that, Email or better yet, call them and ask to talk with someone
for some "technical information" They're usually willing to help.

There some good scientific glass blowing books out there. But they're out of
print. You can sometimes find them at University libraries.

My favorite was written by Wheeler. Not sure of the date.

I have a copy of "The Glass Engineering Hand Book by Shand. 1958" He was a
Corning engineer. It states the following

Corning # 3321 as hard green sealing glass.
CEO 0-300 degrees C 40 x 10-7
Strain point 495 c
Annealing point 540c
Softening point 780c

We usually use uranium as an intermediate on tungsten to boro seals.
There's a bit of a trick to do it right. You need to clean the tungsten and
oxidize it prior to sealing. Is there a specific metal you're trying to
seal?

Randy Hansen
SC Glass Tech
Scam Diego, Comi-forna


"Mike Firth" wrote in message
...
This site http://www.kimble-kontes.com/pdfs/pr...mble_glass.pdf
has Kimble information but not this glass. Perhaps you should e-mail
Kimble
or Corning

--
Mike Firth
Hot Glass Bits Furnace Working Website
http://users.ticnet.com/mikefirth/hotbit46.htm Latest notes

"boer" wrote in message
...
Will someone direct me to info on Corning 3320 or Kimble EN-3 uranium
glass? I would like a referenced cite to TCE (temperature co-efficient
of expansion)

Thanks

boer

Mike Firth wrote:
This site http://www.kimble-kontes.com/pdfs/pr...mble_glass.pdf
has Kimble information but not this glass. Perhaps you should e-mail Kimble
or Corning

Thanks Mike. Do you know if any artists are fabricating geissler tubes?
My interest is to combine phase gratings and high frequency for
displays. I also desire to see if this glass can be supplied as a bead
for glass to metalseals in a uhv vacuum application.

Thanks,
boer

Randy wrote:

I second that, Email or better yet, call them and ask to talk with someone
for some "technical information" They're usually willing to help.

There some good scientific glass blowing books out there. But they're out of
print. You can sometimes find them at University libraries.

My favorite was written by Wheeler. Not sure of the date.

I have a copy of "The Glass Engineering Hand Book by Shand. 1958" He was a
Corning engineer. It states the following

Corning # 3321 as hard green sealing glass.
CEO 0-300 degrees C 40 x 10-7
Strain point 495 c
Annealing point 540c
Softening point 780c

We usually use uranium as an intermediate on tungsten to boro seals.
There's a bit of a trick to do it right. You need to clean the tungsten and
oxidize it prior to sealing. Is there a specific metal you're trying to
seal?

Randy Hansen
SC Glass Tech
Scam Diego, Comi-forna


Thanks for the info Randy. I am looking to seal DuPont LCCC
ceramic(layered laminated green sheet) to tungsten or moly wire as
electrical feedthroughs for a uhv application. Our uhv vacuum boyos are
strict on the materials and processes for the ceramic package. Once
again my thanks.

boer

boer