Nano coating technology is the process of spraying high emissivity and antioxidant RSI rare earth nano coating on the electric heating wire in the glass tempering furnace, which can convert more energy generated by the electric heating wire into infrared radiation for heat transfer to the glass. The thermal cycling compressed air convection technology can provide a certain pressure to the air inside the glass tempering furnace, making it easier to form upward and downward gas convection in the furnace, greatly improving the heat transfer ratio inside the furnace. At the same time, the compressed air is preheated by the hot gas discharged from the tempering furnace before entering the furnace, allowing energy to be recycled.
Compared to ordinary radiation tempering furnaces, tempering furnaces using the above two technologies can save 34% of energy, and the temperature inside the furnace is 30 ℃ lower than that of ordinary tempering furnaces. The glass tempering furnace with convection technology has obvious advantages, especially in handling Low-e glass and glass with special specifications such as slots and holes. The radiation forced convection tempering furnace not only heats uniformly but also has a shorter time. In the process of tempered glass processing, the glass tempering furnace plays a decisive role. The main process flow is the selection, cutting, edge grinding, cleaning, drying, tempering, inspection, and packaging of glass, among which the tempering process of the glass tempering furnace is the most energy-efficient link.
In this process, the glass needs to be heated to 630 ℃, and the temperature in the furnace usually reaches 680-700 ℃. After the glass is heated to the required temperature, it is quickly and evenly cooled to room temperature, causing compressive stress on the surface of the glass and tensile stress on the inner layer, achieving the effect of glass tempering. At present, glass technology companies have applied nano coating technology and thermal cycling compressed air convection technology to glass tempering furnaces. Technology has been rapidly and comprehensively promoted and popularized worldwide, and tempered glass has begun to be used in fields such as automobiles, architecture, aviation, and electronics. The application of tempered furnace glass has expanded to the furniture manufacturing industry, home appliance manufacturing industry, instrument industry, daily necessities industry, as well as new energy industries such as solar energy and wind power generation. In the future, the demand for glass products will be even greater.
