More reading from Control Thermal Processing.
Liquid Helium Processing
Processing Parts Down to -450oF
Many of our competitors talk about "Deep Cryogenic Processing" at -300oF. We don' consider -300oF deep, because the Cryogenic Society of America defines cryogenics as temperatures below -244oF. (120oK). The reason -300oF (89ok) is so prevalent as a temperature is because it is fairly easy to reach with the use of liquid nitrogen, and liquid nitrogen is fairly inexpensive. We've often wondered what would happen a lower temperatures. We have recently found out while experimenting with liquid helium, which boils at -452oF (4ok). We've found some interesting things happening with stereo and sound reproduction. And we are looking at other applications.
Working with Liquid Helium is more complicated than working with liquid nitrogen, and liquid helium is expensive. Storage and transfer of it in a liquid state are problems that we needed to solve. We are now applying this knowledge to the treatment of sensitive aerospace components and new experimental materials.
They have done quite a bit of barrels for me. I have had them do unmachined blanks, rifled blanks,chambered barrels. They machine better, but shoot no better. They do not clean better and they last no longer.
Last edited by butchlambert1; 06/01/15.
