中文简体Tempered glass, a type of prestressed glass, plays an indispensable role in modern society with its excellent safety and wide range of applications.
Tempered glass is a glass that forms compressive stress on the glass surface by chemical or physical methods to improve its strength and impact resistance. This prestressed state allows tempered glass to first offset surface stress when subjected to external forces, thereby improving its bearing capacity and enhancing its resistance to wind pressure, cold and heat, and impact. Compared with ordinary glass, tempered glass has significant safety. When damaged by external forces, tempered glass will break into small blunt-angled particles similar to honeycombs, rather than sharp fragments, greatly reducing the risk of injury to the human body.
Tempered glass also has the characteristics of high strength, high transparency and good thermal stability. The impact strength of tempered glass of the same thickness is 3 to 5 times that of ordinary glass, and it can withstand temperature changes of up to 300°C, making it an ideal choice for various extreme environments.
The manufacturing process of tempered glass mainly includes three steps: heating, quenching and inspection. Ordinary glass is heated to above the phase transition temperature of 620 to 675°C to soften its internal structure. Then, the glass surface is quickly and evenly cooled with a cooling medium (such as cold air) to quickly harden the glass surface while the interior maintains a relatively high temperature, thereby forming residual stress inside the glass. This residual stress forms compressive stress on the glass surface, which increases the strength of the glass.
Tempered glass requires special care during processing to avoid destroying its internal stress balance. Once the stress balance is destroyed, the glass may break or its strength will be greatly reduced.
Tempered glass is widely used in various fields due to its unique properties. In the field of construction, tempered glass has become the preferred material for green buildings and energy-saving buildings with its excellent performance and beautiful appearance. Whether it is the exterior walls and curtain walls of high-rise buildings, or indoor partitions, doors and windows, tempered glass can be seen. In addition, tempered glass is also widely used in the automotive field, such as car windows, windshields, etc., which improves the safety and comfort of vehicles.
In the field of electronics, tempered glass also plays an important role. With the popularity of smart phones, tempered glass has become an ideal choice for mobile phone screens and back panels due to its high hardness and high transparency. Tempered glass is also widely used in display screen protection of electronic products such as tablets and laptops.
