Difference from tempered clear toughened glass

Semi-tempered toughened safety glass is also called heat-strengthened toughened safety glass. Semi-tempered toughened safety glass is a type between ordinary flat toughened safety glass and tempered toughened safety glass. It has some advantages of tempered toughened safety glass, such as the strength is higher than that of ordinary float toughened safety glass, which is twice that of ordinary float fully tempered glass, while avoiding tempered fully tempered glass. Poor flatness, easy to self-explode, once broken, it will be crushed as a whole and other unsatisfactory weaknesses. When the semi-tempered fully tempered glass is damaged, it will crack radially along the crack source, and generally there is no tangential crack propagation, so it can generally remain intact after damage.

Semi-tempered fully tempered glass is suitable for curtain walls and exterior windows in buildings, and can be made into tempered coated fully tempered glass, which has better image distortion than tempered fully tempered glass.

The "Administrative Regulations on Building Safety fully tempered glass" clearly states that 'single-piece semi-tempered clear toughened glass (heat-enhanced clear toughened glass) does not belong to safety clear toughened glass', because once broken, it will form large fragments and radial cracks, although most of the fragments do not have sharp sharp corners, However, it will still hurt people and cannot be used in sunroofs and occasions where human impact may occur.

Semi-tempered clear toughened glass is annealed clear toughened glass through high temperature and quenching, and the surface layer forms a compressive stress lower than 69 MPa, which increases the mechanical strength of the clear toughened glass several times, that is, semi-tempered clear toughened glass. The surface stress of semi-tempered cheap tempered glass is 24-69 Mpa. After being broken, it is the same as ordinary cheap tempered glass, and the product is characterized in that the strength of semi-tempered cheap tempered glass is more than 2 times that of annealed cheap tempered glass. Safety: When broken, the fragments are radial, and each fragment extends to the edge, which is not easy to fall off and is relatively safe, but it does not belong to safety cheap tempered glass. Deflection: The deflection of semi-tempered cheap tempered glass is smaller than that of tempered cheap tempered glass and larger than that of annealed cheap tempered glass. Thermal stability: The thermal stability is also significantly better than that of annealed heat soaked tempered glass, and the temperature difference that ordinary heat soaked tempered glass can withstand after semi-tempering is about 75°C. Semi-tempered heat soaked tempered glass will not explode.

Tempered heat soaked tempered glass is annealed heat soaked tempered glass through high temperature and quenching, and a strong compressive stress is formed on the surface layer, which increases the mechanical strength of the heat soaked tempered glass several times, that is, tempered heat soaked tempered glass. The surface stress of tempered heat soaked tempered glass is 69-168 Mpa. It is characterized by broken small obtuse-angle particles, which will not cause major harm to the human body. The strength is 4 times and above that of ordinary heat soaked tempered glass. It has good thermal stability, and the temperature difference that ordinary heat soaked tempered glass can withstand after tempering is about 180°C. The disadvantage of tempered tempered float glass is that it is easy to explode.

tempered float glass is not only transparent and clean, but also has high strength and hardness. It is an indispensable material in daily production and life. There are various types of tempered float glass. In addition to the more common float tempered float glass and tempered tempered float glass, there are also varieties with special properties such as hot-melt tempered float glass, laminated tempered float glass, and frosted tempered float glass. In this article, we will introduce the difference between semi-tempered tempered float glass and tempered tempered float glass, and how to distinguish between explosion-proof tempered float glass and tempered tempered float glass.

1. What is the difference between semi-tempered tempered float glass and tempered tempered glass for building?

Half-tempered tempered glass for building is processed by heat treatment process, and its strength is 1-2 times higher than that of ordinary tempered glass for building, but its fragmentation state is similar to that of ordinary tempered glass for building. According to the definition of safety tempered glass for building, half-tempered tempered glass for building does not belong to safety tempered glass for building. The stress is generally 24-52 MPa. The English translation name of semi-tempered tempered glass for building is heat-strengthened tempered glass for building. This standard revision refers to the standards of countries or regions such as the European Union, the United States, Japan and Australia. The standard is for the appearance quality of semi-tempered tempered glass for building, Bending, surface stress, fragmentation state, thermal shock, etc. are required.

The broken state of tempered tempered glass for building is small particles, so in some occasions that need to use glass to support or bear weight, tempered glass sometimes cannot achieve the desired effect. For example, the load-bearing glass ribs (glass columns) of all-glass curtain walls, lighting The glass beams on the top all use glass as the supporting structure. Once the tempered glass beams (columns) used are broken, the board surface will lose support, and the curtain wall or the lighting roof will collapse, which may cause serious consequences; another example, using double tempered glass Laminated glass is used as a load-bearing ladder. If the tempered glass on the back is broken, the whole glass will not be able to bear the load, and it is more likely to collapse. In these applications, semi-tempered glass is required. Compared with tempered glass, semi-tempered glass is Tempered glass also has certain advantages in flatness, stress and bursting.

The strength of tempered glass is several times higher than that of ordinary glass, the bending strength is 3~5 times that of ordinary glass, and the impact strength is 5~10 times that of ordinary glass.

Second, it is safe to use. Its bearing capacity is increased to improve the fragile nature. Even if the tempered glass is damaged, it will be small fragments without acute angles, which will greatly reduce the damage to the human body. There is an increase of 2 to 3 times, and it can generally withstand temperature differences above 150 ° C, which has a significant effect on preventing thermal explosion.