Minimising Annealing Costs

When container glass is formed, strong mechanical forces are generated in the glass due to the fast cooling rate. These must be reduced in the annealing lehr by defined heating up and slow cooling down. The energy consumption necessary for this can be clearly reduced by the selective optimisation of the annealing lehr settings. In this article, the author explains how the costs associated with annealing can be reduced by the automatic and objective measurement of residual stresses.