Hi All,
What do you know of Cryogenic Processing? I came across this link...
http://www.johnsonpackings.com/cryo/cryo.htm
I called them up and asked about the process. They soak the parts at LN2 temps for a number of hours, then temper the parts in the oven and repeat a few times.
I have...
Hi,
What non metallic material is best based on the following (in order of importance):
1) Has a CTE as close as possible to stainless
2) Relative isentropic contraction properties
3) Hold a piston/bore O-ring seal with stainless separating vacuum space from helium space (140 psia and 200...
Hi, Can anyone recommend a Thermal Analysis Shop that's worth their weight? I'm looking for a company who is certified enough to give some sort of guarantee to their results? I want this firm to run a full cfd/thermal analysis on a cryogenic pump design. There's alot of them out there, just...
Any recommendations on suppliers of cryogenic globe or gate valves?
Service Tube: 1" with .065 wall
Service Fluid: Helium
Service Temp: 70 K
Service Pressure: 300 psi
Service Flow: 15 g/s
Can anyone add advice on the following topic?
I'm considering braising a titanium shroud to a titanium impeller using silver based braise compound. When choosing the best solder alloy for the job, what should I consider? CTE? Ductility? Interfacial Chemical Bonding Strength?
The diameter...
I'm designing a rig to test a circulation fan. The system is closed loop with Helium as the working fluid at temp 50K and pressure 100 psi.
I need to measure flow, temp and pressure near and upstream of the fan and measure pressure near and downstream of the fan. Consideration needs to be...
Calling all Cryo-guru's,
I'm designing a rig to test a circulation fan. The system is closed loop with Helium as the fluid at temp 50K and pressure 100-300 psi. The piping is 5/8" od (wall thickness is up to me). How does one cool the Helium without spending more than a few hundred dollars...
I need to select the material for an oring that will provide the best seal with minimum leakage for helium gas at 500 psi. What do you recommend? Buna-N? Vittol? Other?
Hi,
I've got an applications where I need an insulating washer/disk in order to insulate stainless from stainless at 50 degrees Kelvin. I need help in selecting a material to do the job. I.e. low thermal conductivity, durable enough at 50 K to take a compressive static load of approx 40 lbf...
