Principle: Hot tempering treatment is carried out by using the thermal expansion and cold contraction properties of glass. First, the glass is heated to a high temperature state (usually above 600 degree ), so that compressive stress is formed on its surface and inside; Then it is quickly cooled with cold air or cold air flow, so that the surface and internal tension stress is formed. This differential stress gives the glass strong impact and heat resistance.

Rapid cooling: After heating to the appropriate temperature, the glass needs to be cooled quickly to form tensile stresses on the surface and inside. It is usually cooled by air or nitrogen injection, which is achieved by high-speed cooling.

Strengthening effect: the glass after hot tempering has high strength and impact resistance. In general, the bending strength of hot tempered glass is more than 5 times that of ordinary glass, and it will be broken into small particles when impacted, reducing the harm to personal safety.

Application: Hot tempered glass is widely used in construction, furniture, electronic products, automobiles and other fields. For example, in construction, hot-tempered glass can be used for Windows, doors, curtain walls, etc., to provide higher security and wind pressure resistance.