[labnetwork] Bending coaxial

[Weaver, John R]

Bending electropolished tubing can be acceptable as long as one is careful in the process, and keeps the bending radius to no less than 10x the tubing diameter. Electropolishing tubing leaves the internal surfaces of the tubing more brittle, and a hard bend of less than 10x the tubing diameter can cause microfractures in the surface. These microfractures can cause particles to break off the internal surfaces and become entrained in the gas stream.


John R. Weaver
Strategic Facilities Officer
Birck Nanotechnology Center
1205 West State Street
West Lafayette IN 47907
(765) 494-5494
jrweaver at purdue.edu<mailto:jrweaver at purdue.edu>
nano.purdue.edu



From: labnetwork-bounces at mtl.mit.edu [mailto:labnetwork-bounces at mtl.mit.edu] On Behalf Of Matthieu Nannini, Dr.
Sent: Tuesday, December 16, 2014 11:33 PM
To: labnetwork at mtl.mit.edu
Subject: [labnetwork] Bending coaxial

Dear colleagues,

A local company is proposing to bend coaxial SS tubing to install a double containment gas line thus removing the need for welded 90° elbows. did you ever see that ? Any comment would be helpful !

Thanks

Matthieu Nannini

Début du message réexpédié :


De: "Matthieu Nannini, Dr." <matthieu.nannini at mcgill.ca<mailto:matthieu.nannini at mcgill.ca>>
Objet: Bending coaxial
Date: 15 décembre 2014 15:31:10 UTC−5
À: Tom Britton <tbritton at criticalsystemsinc.com<mailto:tbritton at criticalsystemsinc.com>>

Hi tom,

A local company here can bend coaxial tubing. They quoted me 4800$ for the 2 lines BCl3 and SiCl4.

What do you think of bending ? They told me the 1/4 wasn’t kinked at all.

Matthieu

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