Physical Tempering Methods for Glass – A Comprehensive Guide

Glass is a versatile material widely used in various industries, including automotive, construction, and optical instruments. However, its inherent brittleness can limit its applications in specific scenarios. To overcome this limitation, glass must be tempered to improve its mechanical strength and thermal stability. This article will provide a comprehensive guide to the different physical tempering methods for glass to help you better understand their applications and advantages.

Tempered Glass

Air Cooling Tempering Method

The air-cooling tempering method involves heating the glass to its softening temperature and then rapidly cooling it by blowing air on both sides, thereby increasing the glass’s mechanical strength and thermal stability. This method is mainly used in automobiles, ships, and buildings.

Liquid Cooling Tempering Method

The liquid cooling tempering method heats the glass near its softening point and then places it in a tank filled with liquid for rapid cooling. This method is mainly suitable for tempering small-sized thin glass, such as eyeglass lenses, LCD screen glass, and optical instrument glass.

Particle Tempering Method

The particle tempering method involves heating the glass to near its softening temperature and then quenching it in a fluidized bed of solid particles. This method can temper ultra-thin glass with high strength and good quality, making it an advanced technology for manufacturing high-performance tempered glass.

Spray Cooling Tempering Method

The spray cooling tempering method uses mist instead of water as a cooling medium. By using spray exhaust equipment, the glass can be cooled more uniformly during tempering, resulting in lower energy consumption and better-tempered glass performance.

Horizontal Tempering Method

The horizontal tempering method is a widely used process that involves heating and cooling flat glass to improve its mechanical properties. This method can produce various tempered glass products, including flat, curved, double-curved, etc.

The above are several common methods of physically tempering. If you want to learn more about tempered glass or other glass-related topics, please stay tuned to us.