Heat strengthened glass manufacturers

Industry knowledge

Heat strengthened glass is a type of glass that has been processed to increase its strength and thermal resistance. It is stronger than annealed glass, but not as strong as tempered glass. The production process involves heating the glass to a temperature of around 650-700°C (1200-1290°F) and then rapidly cooling it using air jets or a quenching medium such as water or oil. This process creates compressive stresses on the surface of the glass, which increase its strength and thermal resistance.Compared to tempered glass, heat strengthened glass has a lower surface compression and a higher residual stress, which makes it less susceptible to spontaneous breakage. However, it is still considered to be a safety glass, and when it does break, it will break into relatively small pieces that are less likely to cause injury.

Production process of heat strengthened glass

Heat strengthened glass is a type of glass that undergoes a heat treatment process to increase its strength and thermal resistance. The production process of heat strengthened glass typically involves the following steps:

    Cutting: The glass is first cut to the desired size and shape.

    Cleaning: The glass is cleaned to remove any dirt, oil, or other contaminants that may interfere with the heat treatment process.

    Heating: The glass is heated to a temperature of around 650-700°C (1200-1290°F) in a furnace. This temperature is lower than that used for tempered glass, which typically requires temperatures above 700°C.

    Annealing: Once the glass reaches the desired temperature, it is held at that temperature for a period of time to allow it to anneal. This helps to relieve any residual stresses that may have been present in the glass and prevent it from cracking or breaking during the heat treatment process.

    Quenching: After the annealing process is complete, the glass is rapidly cooled using air jets or a quenching medium such as water or oil. This rapid cooling process creates compressive stresses on the surface of the glass, which increase its strength and thermal resistance.

    Inspection: The glass is carefully inspected to ensure that it meets the required quality standards. Any defects or imperfections are identified and the glass is either repaired or rejected.

    Packaging: The finished glass is packaged and shipped to the customer for use in a variety of applications, including building facades, windows, doors, and other architectural features.