Static Annealing Lehr
This furnace is the most used by the glass masters in Murano island.
The main features of it, is the possibility to annealing from very small items (2 hours cooling down) till very big glass items with weight till 30 kgs each (more than 48 hours cooling down).
The working phases are the followings:
- Heating up of the furnace by automatic combustion and control system, it takes 30 minutes to reach the annealing temperature (Normally between 450 – 510 °)
- The Loading of the glass items during the glass master working for 7 – 9 hours, with constant temperature of the furnace.
- Start of the Controlled cooling down of the glass items with automatic programmer