Re: ATM - Kiln Design

["Poul Linnet" <kam1842@vip.cybercity.dk>]

Richard Schwartz wrote:
>
> As for annealing, you do not need to worry about the accuracy of the
> thermocouple if you bracket the annealing range.   As long as the
> thermocouple has a continuous and monotonic response curve, you will be
> OK.
>
> You need a thermocouple-driven ramping controller so that
> you can program in the desired temperature curve.  (I have an anneal job
> running right now, as I type this, and it is fully automatic.)
>
Hi Richard!

Please be a little more specific to satisfy our general interest , like:

* How long time does it take to anneal a typical mirrorblank.?
* What temperature profile is needed?
* How do you find out at what max. temperature to start and what range to
cover?
* Is it possible to do annealing, not knowing the exact data for the glass
on beforehand and not having access to a calibrated thermocouple?.

Poul Linnet, Copenhagen, Denmark