What are the categories of glass tempering furnaces?

Tempered glass is widely used in daily life, as it has stronger impact resistance and safety than normal glass. The equipment used to produce tempered glass is a glass tempering furnace, which can produce tempered glass through physical or chemical methods. So what are the categories of glass tempering furnaces? Let's briefly introduce them below.

What are the categories of glass tempering furnaces

1. Physical method glass tempering furnace

The physical method of glass tempering furnace is to improve the strength of glass through physical methods. Generally, the flat glass is first heated at high temperature, and then subjected to rapid cooling treatment to form compressive stress on the surface of the cooled glass and tensile stress inside the glass. Under the action of compressive stress on the surface and internal tensile stress, the strength of the glass is improved, making ordinary annealed glass a stronger tempered glass. Because this tempering method does not change the chemical composition of the glass, the tempering furnace using this method becomes a physical glass tempering furnace.

According to the heating method of the equipment, the physical glass tempering furnace can also be subdivided into radiation heating tempering equipment, forced convection heating tempering equipment, and fire-resistant tempering equipment.

According to the structure and function of the equipment, it can be subdivided into flat tempering equipment, bent tempered glass equipment, combined glass tempering furnace and continuous tempering equipment, bidirectional tempering equipment, unequal arc bending tempering equipment, etc.

2. Chemical method glass tempering furnace

The chemical method glass tempering furnace changes the chemical composition of the glass surface by using methods such as surface dealkalization and alkali metal ion exchange, thereby improving the strength of the glass. This tempering method changes the chemical composition of glass, so the tempering furnace using this method is called a chemical method glass tempering furnace.

The chemical tempering method involves placing glass in molten alkali salt, which allows some ions with smaller radii in the surface of the glass to exchange with ions with larger radii in the molten salt, forming a compressive stress layer on the surface of the glass and a tensile stress layer inside the glass, thereby improving the mechanical strength and impact resistance of the glass, making ordinary glass a stronger tempered glass.

The chemical glass tempering furnace is a mechanical equipment that completes the entire process of chemical glass tempering. Its main working procedures are preheating ion exchange salt dripping slow cooling.

The above is a complete introduction to the categories of glass tempering furnaces. The above introduction to the categories of glass tempering furnaces mainly classifies them based on their working methods. According to different classification methods, their categories may also vary. Our company produces various models of glass tempering furnace equipment. If you have any related needs, please feel free to leave a message for consultation.