Annealing

Annealing

The annealing of glass is the process by which it is heated to and held at a controlled temperature for a defined period to relieve internal stresses. Careful cooling under controlled conditions is essential to ensure, that no stresses are reintroduced by chilling or quenching.

Annealing Schedule

 

 

Thickness

Heating Rate
°C/min.

Time /min.

Temp. Δ X
°C

Rate I °C/min.

Rate II°C/min.

Rate III°C/min.

3,0

130

5

5

12,0

24,0

130

6,0

30

15

10

3,0

6,0

30

12,0

8

30

20

0,8

1,6

8

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