[China Glass Net] High-temperature glass mirrors are used under high temperature conditions. We need to master the correct method of use to ensure the service life and safety of the glass.
The correct use of high temperature glass mirrors is as follows:
1. Strict cleaning treatment. If the alkali metal and its compounds such as sodium and potassium are stained on the surface of the high-temperature glass mirror, it is easy to be called crystal nucleus when used at high temperature, and will crystallize rapidly. Causes the glass to lose transparency. This situation is more obvious for ultra-high temperature glass mirrors, so we need to ensure the cleanliness of the glass when installing and using. Before use, it can be immersed in 5~20% concentration of hydrofluoric acid for 5~10 minutes, fully washed with deionized water, then wiped and dried with absorbent gauze. After drying, it is strictly forbidden to touch directly by hand. The high temperature glass mirror with low working temperature is simple to clean and can be cleaned with ordinary water.
2, try to avoid unnecessary quenching and rapid heat, although the high temperature glass mirror has a good thermal temperature, but the temperature should not be too fast when heating or cooling, too fast will lead to glass cracking. Although high-temperature glass mirrors have certain thermal shock resistance, it is easy to cause glass fatigue due to the rapid change of quenching and rapid heat. At this time, the glass is easily broken, which is why the outdoor high-temperature glass mirror is easily broken in winter. The reason for the crack.
3. It is necessary to strictly control the temperature and pressure during work. Each glass has certain working temperature and pressure requirements. In the process of use, we need to control the working temperature to avoid the glass bursting caused by over-temperature or over-pressure.
4, should pay special attention to 573 ° C high temperature, because the temperature is 573 ° C is the glass crystal transition point, so super heat-resistant glass, whether it is heating or cooling, must pass this temperature point quickly.
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