A tempering furnace is a device used for strengthening glass treatment, which works by rapidly cooling glass at high temperatures to enhance its strength and durability. Specifically, the tempering furnace first heats the glass to a high temperature and then rapidly cools it, creating a pressure difference between the glass surface and interior, thereby increasing its strength and longevity. This rapid cooling process is typically achieved by spraying a cooling medium (such as air or an inert gas) onto the glass surface.

Tempered furnaces are commonly used to produce glass doors, windows, automotive glass, solar panels, building facades, and electronic displays. In these applications, tempered glass offers higher strength and durability, capable of withstanding greater impacts and pressures while reducing the risk of glass shattering. Additionally, tempered glass boasts better thermal stability and light transmittance, making it widely used in the construction and decoration industries.