I'm looking to choose a Ti alloy for a reference structure for a physics experiment.
The structure is about 15"x6"x6" and is relatively heavily gutted by machining.
The reference surfaces should not move more than 0.5um during 1 year.
Temperature will be stable.
We will heat treat as much as...
Anyone familiar with best practices for finishing Ti surfaces for a UHV enclosure?
Mechanical polishing to what level?
any chemical or electro-chemical processes?
I'm building a mechanism that should be compatible with a 1E-7 Torr environment.
(The chamber is sealed, and is pumped by a Getter)
There are a number of parts (e.g. a 4mm diameter by 15mm long push-rod, an M4 nut and washer) that need to be insulating.
I'm looking for a few good materials...
I'm looking for a spring-energized seal, similar to the one referenced below, but with a non-magnetic spring (this one is Nickel based)
http://www.helicoflex.com/catalogs/uhpuhv.pdf
A Beryllium Copper or Phosphor Bronze spring will do the trick.
The seal should be designed for 10-7 Torr
Thanks.
I'm looking for a spring-energized seal, similar to the one referenced below, but with a non-magnetic spring (this one is Nickel based)
http://www.helicoflex.com/catalogs/uhpuhv.pdf
A Berrylium Copper or Phosphor Bronze spring will do the trick.
The seal should be designed for 10-7 Torr...
I'm trying to put together a vacuum chamber that is both rigid enough and light enough to be placed of a shake table.
The operating pressure is 10-7 torr.
Shake load peaks at 20g between 20hz and 60hz
The actual experiment is relatively light, but we're trying to fit the chamber and...
I'm looking to calculate the steady backflow (leak rate) through a closed reed valve, given the pressure difference and the viscosity of the fluid.
For simplicity, the reed is circular with radius R, and is sitting over a hole with radius r. The reed remains flat and so contacts the flange over...
I'm looking to calculate the backflow through a (closed) reed valve, given the pressure difference and the viscosity.
For simplicity, the reed is circular with radius R, and is sitting over a hole with radius r. The reed remains flat and so contacts the flange over an (R-r) anulus.
I'm not...
I'm looking to calculate the backflow through a (closed) reed valve, given the pressure difference and the viscosity.
For simplicity, the reed is circular with radius R, and is sitting over a hole with radius r. The reed remains flat and so contacts the flange over an (R-r) anulus.
I'm not...
