Explain several problems that commercial refrigerator glass doors often encounter

Advantages: Tempered glass doors increase the load-bearing capacity, enhance the wind pressure resistance, heat and cold resistance, and impact resistance of the glass. After tempering, uniform compressive stress is formed on the surface of the glass, and internal tensile stress is formed at the same time, which improves the bending strength and impact strength of the glass, and its strength is more than four times that of ordinary annealed glass.

Safety

When the glass is broken by an external force, the fragments will form small obtuse broken particles similar to honeycombs, which are not easy to cause serious harm to the human body.

high strength

The impact strength of tempered glass with the same thickness is 3-5 times that of ordinary glass, and the bending strength is 3-5 times that of ordinary glass.

thermal stability

Tempered glass has good thermal stability and can withstand three times the temperature difference of ordinary glass, it can withstand a temperature difference of 300 °C.

shortcoming:

1. The tempered glass door can no longer be cut or processed, it can only be processed into the desired shape before tempering, and then tempered.

2. Although tempered glass is stronger than ordinary glass, tempered glass has the possibility of self-explosion (self-cracking), while ordinary glass has no possibility of self-explosion.

3. The surface of the tempered glass door will be uneven (wind spots), and the thickness will be slightly thinned. The reason for the thinning is that after the glass is melted and softened, it is rapidly cooled by strong wind, which makes the crystal gap inside the glass smaller and the pressure higher, so the tempered glass is thinner than before.

Generally, the glass of 4-6mm is thinned by 0.2-0.8mm after tempering, and the glass of 8-20mm is thinned by 0.9-1.8mm after tempering. The specific degree should be determined according to the equipment, which is why tempered glass cannot be used as a mirror.

4. Flat glass used in buildings usually deforms after tempering furnace (physical tempering), and the degree of deformation is determined by equipment and technicians.

To some extent, it will affect the decorative effect (except for special needs).