High-temperature glass, also known as high-temperature resistant glass, is a specialized glass that can reach or withstand specific temperatures and resist corresponding pressure levels and applicable media under certain temperatures, mediums (such as acid-resistant and alkali-resistant), and pressure level conditions.
Generally made of high-purity silica mineral material, it is refined at high temperatures and can maintain the original permeability and transparency of the glass under high-temperature environments.
High-temperature glass has various characteristics, including high transparency, high-temperature resistance, good thermal stability, and chemical stability. It is an indispensable key component of industrial automation production lines and is widely used in pressure vessel manufacturing plants, steel, metallurgy, petrochemical, military, lighting, and other industrial fields.
High-temperature glass is also called high-temperature-resistant glass, and temperature-resistant glass, and is suitable for use in high-heat situations with the presence of open flame and hot air occasions without the presence of an open flame. The series of high-temperature resistant glass contains the following six aspects:
1. High-temperature glass, high-temperature, and high-pressure glass, pressure vessel sight glass, pipe sight glass, and boiler special high-temperature glass.
2. High-temperature glass for fireplace, wave soldering, oven, and Firehole.
3. Acid and alkali-resistant glass for chemical pipelines, super high-temperature resistant glass for thermal power plants and steel plants, high-temperature resistant glass for electrolytic aluminum plants, and explosion-proof high-temperature glass.
4. Radiation-proof glass, UV-transparent glass, UV-proof glass, IR-transparent glass, IR-isolated glass, laser protection glass, and other optical glass.
5. Special glass for printing and dyeing equipment, buried lamp glass, lamp glass, mining explosion-proof glass, civil explosion-proof glass, high-temperature glass sight tube, and high-temperature resistant sight glass.
6. Special optical glass for non-destructive testing, medical testing, all kinds of physical and chemical testing, electric welding protection glass, blue cobalt glass, etc.
Stress in high-temperature glass is generally divided into three types: thermal stress, structural stress, and mechanical stress.
Thermal stress is caused by the temperature gradient, and it can be divided into two categories of temporary stress and permanent stress. A part of the stress can be eliminated by annealing, which is called temporary stress. There is also a part of the thermal stress that still exists, even after the temperature gradient disappears, and this part of the stress is called permanent stress.
Mechanical stress is the stress caused by external force on the glass, and it disappears when the external force is removed. However, if the external force is too large, it can cause the glass to break.
The high-temperature-resistant glass needs to be stored in a dry, ventilated area, away from heat sources, and in a warehouse with cement hard ground, without nearby weeds to prevent insect infestation. If stored in an open place due to the limitation of the storage room, the finished glass needs to be covered with thatch cloth, and it should be regularly dried.
