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Heat Seals

Heat Seals

Heat Seals

I'm making a chamber to boil off some Cadmium that is used for brazing silver contacts onto other metals.


The amount of Cd is upto 12%, a very small amount, I've a few of these contacts and intend to do them in small batches.
The max temperature reached will be 500 degrees Celsius.

Here is a side view of my heating chamber (made from Iron), it is oval.
You can see how I've got several sealing lips. The grey dots are Alumium sealing rings which have been fitted into a groove (also visible) in the lip. My air gap will be ~0.5mm which I hope will close up once the chamber is heated.
Do I have too many lips, is it overkill? Do I need the Al seals?

The other graphic is the top exit for the gaseous Cd, with a Heat resistant glass tube (taken from a milking machine).
This tube will be surrounded by a water cooling system, to solidify the Cd.
Do you have any issues with this design?

I realise this is not rocketry, however it is very similar to propellent chamber seals.

RE: Heat Seals

The Creator... wrong forum...

Unsure what Your purpose is... mechanical brazing or electrical soldering?

Consider any of the following forums...

Material engineering other topics

Electrical/Electronic engineering other topics

Regards, Wil Taylor

o Trust - But Verify!
o We believe to be true what we prefer to be true. [Unknown]
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation,Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", Homebuiltairplanes.com forum]

RE: Heat Seals

Or even forum725: Welding, Bonding & Fastener engineering.

btw, Wil, if you copy the forum number at the top of the thread, the site will replace that number with the link and forum title as in this current posting

TTFN (ta ta for now)
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