Classification and application of tempered glass.
2023-05-24
Classification
By shape
1. Tempered glass is divided into plane tempered glass and curved tempered glass according to its shape.
General plane tempered glass thickness of 11, 12, 15, 19mm and so on twelve kinds; Curved tempered glass thickness has 11, 15, 19mm and other eight kinds, the specific thickness after processing or depends on the manufacturer's equipment and technology. But curved (i.e. bent tempered) tempered glass has a maximum radian limit for each thickness. That's what we call R, R is the radius.
2. Tempered glass is divided into flat tempered and bent tempered according to its appearance.
3 tempered glass according to its flatness is divided into: excellent products, qualified products. First-class toughened glass for automobile windshields; Qualified products are used for architectural decoration.
By process
⒈ Physical tempered glass is also known as hardened tempered glass. It is the ordinary plate glass in the heating furnace heating to close to the softening temperature of the glass (600℃), through its own deformation to eliminate the internal stress, and then the glass out of the heating furnace, and then use a multi-head nozzle to blow the high pressure cold air to both sides of the glass, so that it is rapidly and evenly cooled to room temperature, toughened glass can be made. This kind of glass in the internal tension, external pressure stress state, once the local damage, will occur stress release, glass is broken into numerous small pieces, these small pieces without sharp edges and corners, not easy to hurt.
The chemical tempered glass is by changing the chemical composition of the surface of the glass to improve the strength of the glass, generally is the application of ion exchange toughening method. The method is to contain alkali metal ions of silicate glass, immersed in the molten state of lithium (Li+) salt, so that the glass surface Na+ or K+ ions and Li+ ions exchange, the surface of the Li+ ion exchange layer, due to the expansion coefficient of Li+ less than Na+, K+ ions, resulting in the cooling process of the outer shrinkage is smaller and the inner shrinkage is larger, When cooled to room temperature, the glass is also in a state of inner tension, outer pressure, the effect is similar to physical toughened glass.
According to the degree of toughening
1.Tempered glass: tempered =2~4N/cm, glass curtain wall tempered glass surface stress α≥95Mpa;
2.The semi tempered glass: tempered =2N/cm, glass curtain wall semi tempered glass surface stress 24Mpa≤α≤69Mpa;
3.Super toughened glass: degree of toughening >4N/cm.
Application
By shape
1. Tempered glass is divided into plane tempered glass and curved tempered glass according to its shape.
General plane tempered glass thickness of 11, 12, 15, 19mm and so on twelve kinds; Curved tempered glass thickness has 11, 15, 19mm and other eight kinds, the specific thickness after processing or depends on the manufacturer's equipment and technology. But curved (i.e. bent tempered) tempered glass has a maximum radian limit for each thickness. That's what we call R, R is the radius.
2. Tempered glass is divided into flat tempered and bent tempered according to its appearance.
3 tempered glass according to its flatness is divided into: excellent products, qualified products. First-class toughened glass for automobile windshields; Qualified products are used for architectural decoration.
By process
⒈ Physical tempered glass is also known as hardened tempered glass. It is the ordinary plate glass in the heating furnace heating to close to the softening temperature of the glass (600℃), through its own deformation to eliminate the internal stress, and then the glass out of the heating furnace, and then use a multi-head nozzle to blow the high pressure cold air to both sides of the glass, so that it is rapidly and evenly cooled to room temperature, toughened glass can be made. This kind of glass in the internal tension, external pressure stress state, once the local damage, will occur stress release, glass is broken into numerous small pieces, these small pieces without sharp edges and corners, not easy to hurt.
The chemical tempered glass is by changing the chemical composition of the surface of the glass to improve the strength of the glass, generally is the application of ion exchange toughening method. The method is to contain alkali metal ions of silicate glass, immersed in the molten state of lithium (Li+) salt, so that the glass surface Na+ or K+ ions and Li+ ions exchange, the surface of the Li+ ion exchange layer, due to the expansion coefficient of Li+ less than Na+, K+ ions, resulting in the cooling process of the outer shrinkage is smaller and the inner shrinkage is larger, When cooled to room temperature, the glass is also in a state of inner tension, outer pressure, the effect is similar to physical toughened glass.
According to the degree of toughening
1.Tempered glass: tempered =2~4N/cm, glass curtain wall tempered glass surface stress α≥95Mpa;
2.The semi tempered glass: tempered =2N/cm, glass curtain wall semi tempered glass surface stress 24Mpa≤α≤69Mpa;
3.Super toughened glass: degree of toughening >4N/cm.
Application
Flat tempered and bent tempered glass belongs to safety glass. Widely used in high-rise building doors and Windows, glass curtain walls, indoor partition glass, lighting ceiling, sightseeing elevator passage, furniture, glass guardrail, etc.
Usually tempered glass can be used in the following industries:
⒈ Construction, building formwork, decoration industry (example: doors, Windows, curtain walls, interior decoration, etc.)
⒉ Furniture Manufacturing Industry (glass tea table, furniture, etc.)
⒊ Household appliance manufacturing industry (TV, oven, air conditioning, refrigerator and other products)
4.The electronic and meter industries (a variety of digital products such as mobile phones, MP3 players, MP4 players and clocks) have done this.
⒌ The automobile manufacturing industry (automobile window glass, etc.)
6.Pictures of daily product industry (glass chopping board, etc.)
7.Special industry (military glass)
Because after the tempered glass is broken, the fragments will break into uniform small particles and there is no universal glass knife shaped sharp corner, so it is called safety glass and widely used in cars, interior decoration, and high floors of external Windows.
