Category: Ask the Experts

I’m looking for information about the design of cryostats and suspension mechanisms for insulation and cryostat shielding.

Do you have any information on where to find companies in Southern California that do cryogenic hardening of engine parts?

What kinds of information do you have on the uses of liquid nitrogen as a coolant in the machining industry?

I have a small air separation plant: 50Nm3/hr. Where can I find information about air separation techniques? For example, the starting time is now 12 hours after defrost--I want to know if it's possible to reduce that.

Can you recommend a company to assist us in developing a LN2 cooling system for EDX detector use?

For our cold mechanics, we use ball bearings from ADR from stainless steel which is AISI 440C, DIN X105CrMo17, W.Nr. 1.4125. Does anyone know the data of thermal expansion of this material down to 40 K?

What is the difference between radar and servo gauge for LNG tanks? How do I understand the gauging system for LNG tanks and choose the best one?

I had to take a seminar in a national competition that is to be held in our country on the topic “cryogenics in spacetech.” For this, I need some materials related to it, and I thought to approach you for help. Can you suggest some relevant materials?

I work at a facility with a large thermal vacuum chamber. We are using both nitrogen and helium shrouds.

I am a final year physics student at the University of Birmingham, and as part of a group I am currently designing a cryostat. One of the calculations I need to make (very soon!) is how much heat will be conducted down the walls. All information I have found so …

We are reviewing the product design of liquid filled differential level gauges and want to insure that they meet the industry requirements. The former license owner had authorized that a fill fluid of ethylene glycol (68%) and distilled water (32%) could be used for oxygen service up to 500 psi. …

Is there anyone who has information about the heat flux in case of vacuum loss on cryogenic surfaces?

Can you tell me if it is possible to eliminate the negative affects of grinder burn on gear teeth with the use of cryogenics?

I am remembering in the 1970’s when astronauts were walking on the moon and carried oxygen in 300 ss bottles inside LN2 tanks which were filled and pressurized.

I am Assistant Director for Environmental Health & Safety at a university health service clinic.

I am an engineer looking to improve our solenoid valve sealing on cryogenic medias. I was wondering if you knew of materials other then PTFE or glass filled PTFE that could be used for sealing.

Could you please tell me what is the temperature range of cryogenics? In other words, is -100°F considered cryogenic, or does it start lower? Could I expect to see some extended life in D2 stamping dies? What would the recipe be to achieve the desired results using cryogenics?

I am looking for a company producing "secured" heat exchangers to work at a minimum temperature of -45 C on a cooling system for electronics.

What is the speed of sound in liquid hydrogen?

Any suggestions where to find cryogenic properties of non-lead solder materials like Gallium and Tin?