[Zhongbo.com] Low-e coated glass tempering is a difficult type of tempering in coated glass. It is mainly manifested in three aspects: one is that the film surface is very easy to burn, the other is easy to break when blowing; the third is not easy to temper .
Therefore, when it is operated, it is different from ordinary coated glass. The operation is to pay attention to the following points:
1. The glass to be tempered must be cleaned. To carry and place the glass, it must be cleaned with white gloves. Otherwise, the fingerprints on the glass will be very clear and cannot be wiped off after tempering.
2. The film surface must be on top when placed.
3. The load per furnace is controlled at 50-80%.
4. The heating temperature (especially the upper part) is 5-10% lower than the normal temperature.
5. The heating balance, bypass valve and heat-dissipating valve must be started at the same time. The heating balance should be started until the glass is flattened in the furnace. After heating, the heating balance can be opened less.
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