Glass toughening furnace is also known as glass toughening equipment, glass toughening unit, toughening furnace, toughening equipment, and so on. When the glass is subjected to external forces, the compressive stress layer can offset part of the tensile stress and avoid glass breakage, thus achieving the purpose of improving the glass strength.
Glass toughening furnace is to form compressive stress layer and tensile stress layer on glass surface by physical or chemical methods. When the glass is subjected to external forces, the compressive stress layer can offset part of the tensile stress and prevent the glass from breaking, thus achieving the purpose of improving the glass strength. Not only that, the micro-cracks on the glass surface become more subtle under such compressive stress, but also increase the strength of the glass to some extent.
The current physical toughened method is widely used heating the glass to softening point (650 ℃), the glass still can maintain its original shape, but has certain ability to migration of particles in the glass, structural adjustment, so that the internal stress of the existence of eliminate soon, then put the glass tempering furnace toughened glass blowing cold snap, when the temperature balance, compressive stress, occurs on the surface of glass lining has a tensile stress, the glass produced a uniform and regular distribution of internal stress, improve the glass as the tensile strength of brittle material, so that the glass bending and impact strength was improved. At the same time, due to internal uniform stress of glass In the case that the glass is partially cracked by an impact beyond its strength, it will self-burst into small particles under the effect of internal stress, thus improving its safety. Therefore, tempered glass can also be called prestressed glass or safety glass.
In the process of toughened glass glass tempering furnace, generally, wind and stress, the wind is in the process of cooling due to uneven due to uneven glass stress, which formed in some special Angle will see the glass surface is observed under light and shade stripes. Stress spot is caused by the uneven because of stress, such as in the process of heating, central hearth and uneven temperature difference and cause stress. Stress spot there is no way to completely avoid, but a well-designed toughened equipment can reduce the stress of a greater visibility.