Geoscience Reference
In-Depth Information
Figure 3.12 Advertisement of Leco Company, Tem-Press Research, Bellefonte,
Pennsylvania.
Tuttle's original design underwent several improvements in closure design using
new alloys which have extended the pressure
temperature range of cold-seal
vessels. Luth and Tuttle
[36]
described a modified Tuttle-type closure which
permits vessels to go up to 8 in. length, 1.25 in. o.d., and 0.25 in. i.d. to be used up
to 10 kbar pressure and at temperatures as high as 750
C. Rene 41 (Ni-based alloy)
is used for this vessel. The most comprehensive reviews of design and operation of
cold-seal equipment are given by Huebner in 1971
[37]
and Edgar in 1973
[38]
.
Similarly, Roy modified another vessel which had been designed by Tuttle but
never exploited. It proved that Roy and Tuttle's improved version was much
simpler and much more convenient than all others. This Roy modification is popu-
larly known as the “test-tube bomb” and it is typically 1" to 0.5" o.d.
8" in. long
superalloy (Hastealloy; Rene 41, Stellite 25, or Udimet) rod with a 3/16" to 1/4"
diameter hole drilled down to 1
3
=
:
of the bottom. It was threaded at one end and
the pressure seal was made there with a 59
2in
60
cone seat against which the
connector from the pressure pump was forced by a nut and thread.
