Miika Äppelqvist
Question number 3 comes from one of our customers in Russia:
How to run the new coated glass with older Tamglass tempering lines?
Thank you again for the question! Watch our video answer:
Show notes:
The easiest way is to lower the process temperatures and increase the cycle time. This means, however, a lower capacity, but it will give you the ability to run low-E glass. This makes it easier to reduce the frame effect, as well as control the glass flatness and other quality measures.
In the ProE and Sonic type of furnaces, there is an “index” feature, which keeps the top heaters running even when the glass temperature is not requesting it.
However, if you want to run low-emissivity glass with a higher cycle time, then an upgrade is needed. An upgrade can include a roller heat control system, a Vortex Pro convection system or something else. These upgrades are especially suitable for old technology that was designed at a time when there was no low-emissivity coated glass available in the market.
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Glastory 
Hello!
We are running ProE 2442 for 8 years now and there is still no glass that was not bean able to be tempered or HS successfully. And there was a full range of them… Basic thing is to have experienced operator that knows his way with glass and coatings and knows his furnace and abilities. Rest is easy. Watching end product, playing here and there whit settings until glass is “good looking”. You can have brand new, state of the art, machine, and make poor quality product. Know your furnace, glass and coating, then you can make “good glass”.
Nikola, completely agree with you. The latest machines are a bit easier to operate, however good operator can always do excellent glass when the knowledge and the tools are right. Sometimes the capacity might be an issue with older machinery and latest technology can provide answer to that.