Further proves that the explosion of glass-ceramics arc plate is related to the heating rate
In order to further clarify the influence of the process system on the yield of curved plates, supplementary experiments were conducted on the basis of orthogonal experiments. When the heating rate is less than 1.5e/min, the explosion phenomenon almost disappears, which further proves that the explosion of the glass-ceramics arc plate is related to the heating rate. After that, the heating rate was fixed (1.5e/min), and the annealing system was changed. When the annealing temperature was lower than 600e, no improvement in the annealing rate was able to increase the yield. When the annealing temperature is higher than 660e and the annealing time is greater than 7h, the yield rate is significantly improved, and the Huaneng rock wool board reaches 65% or more. However, it is impossible to adopt a long annealing time in industrial production. Therefore, under the premise of satisfying the production, a higher annealing temperature and an appropriate annealing time may be adopted, that is, the annealing time is higher than 660 e and the annealing time is not less than 7 h. .
Under the premise of determining the composition of glass-ceramics, the main factors influencing the yield of glass-ceramics arc-shaped panels are the heating rate, the annealing temperature and the annealing time. Combining with actual production, in order to improve and ensure a high yield, the preferred process system is: the heating rate is less than 1.5e/min, the heat-bending temperature of 850900e is 0.5h, and 660e begins to be annealed. The annealing time is more than 7h.
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