Re: inductive heaters

To: neon-l@netcom.com
Subject: Re: inductive heaters
From: neonmc@earthlink.net (Morgan Crook)
Date: Sat, 20 Apr 1996 16:04:03 -0700
Reply-To: neon-l@netcom.com
Sender: owner-neon-l@netcom.com
Al, 
if you heated the electrodes first, then the trash that comes out of the
glass would stick to the electrodes as they would be at less that "degassing
temp".  Keeping all of the glass above this temp while also bringing the
electrodes up to "degass temp" is the tricky part.  
And I must say one of the beautiful aspects of "conventional" electric
bombarding - you can hold both glass (all of it) above these magic temps
(for each of them) while they degass some, then stop bombarding, and suck
all this newly liberated stuff out before (or most of it anyway) even before
the temp cools to "readsorption" temps.
Morgan

>At 10:32 AM 4/15/1996 -0400, Neonmc@aol.com wrote:
>>Al, 
>>the coils are not kept in the oven while heating the unit.  A while back I
>>think I made some comment about designing your oven so that you can get to
>>the electrodes easily / quickly to heat them after the glass is up to temp.
>
>        Ahh, I see what you're saying Morgon.  I'm still curious about
>something though (maybe this is a real dumb question, but I'm not
>seeing it): why not process the electrodes before heating up the unit in
>the oven?  Sure, the emitter coating will burn off and the resulting
>particles will leave the emitter and then grab on to the inside surface
>of the tube somewhere.  Will they not ultimately be released when the
>unit is heated in the oven, and everything is then fine?  It would seem
>to me this would have to work, otherwise normal electrical bombarding
>would suffer from the coating particles adhering to the inside of
>the tube when the electrodes are heated up (because the rest of the
>glass is still at approx. 500F degrees, where it would be in the oven).
>
>        If this would work, it seems a lot easier to me: process the
>electrodes with the induction heater, *then* oven-pump the unit.  Now the
>only thing that has to get into the oven is the tubulation connected
>to the pumping manifold.
>
>        What am I missing?
>
>        Thanks!
>                                                                           
>|------------------------------------------------------|------------------|
>| I'm gonna be a computer operator... I got the idea   | Al Hooton        |
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