[China Glass Net] Semi-tempered glass is also called heat-enhanced glass. Semi-tempered glass is a kind of between ordinary flat glass and tempered glass. It has some advantages of tempered glass. For example, the strength is higher than that of ordinary float glass, which is twice that of ordinary float glass. At the same time, it avoids tempered glass. The flatness is poor, and it is easy to blew. Once it is destroyed, it is not as good as the overall smash. When the semi-tempered glass breaks, it is radially radial cracked along the crack source, and generally there is no tangential crack propagation, so the damage does not generally fall under normal conditions.
Semi-tempered glass is suitable for curtain wall and exterior window in buildings. It can be made into tempered coated glass, and its image distortion is better than tempered glass. "Building Safety Glass Management Regulations" clearly states that 'single piece of semi-tempered glass (heat-reinforced glass) is not a safety glass', because once it is broken, large fragments and radial cracks are formed, although most pieces do not have sharp sharp corners, However, it will still hurt people and cannot be used in skylights and occasions where human impact may occur.
The precautions for transportation and use of semi-tempered glass are as follows:
1. Semi-tempered glass is applied to containers, pallets or wooden boxes. Each piece of glass is filled with plastic or paper padding, and the glass and the package are filled with a soft material that does not easily cause appearance defects such as glass scratches. Each package should be marked with the words “upward, lightly placed, carefully broken, glass thickness, gradeâ€.
2. Semi-tempered glass can be transported by various types of vehicles. When transporting, the wooden box should not be laid flat or inclined. The length direction should be the same as that of the transport vehicle, and there should be rain protection measures. When handling the glass, avoid contact with hard objects, collisions, and temporarily unused semi-tempered glass should be stored vertically in a dry, ventilated room.
3. Semi-tempered glass is a kind of glass product with internal stress. It can not be cut, drilled and edging after molding, otherwise it will burst.
4. The stress at the edge of the semi-tempered glass should be well protected. Do not hit the edge of the glass with a sharp, hard object weight, otherwise it will easily break the glass.
5, the metal frame can not be directly in contact with the glass, the middle should have a good sealing of the elastic sealing material as a gasket, the size of the glass and the frame should be matched. During installation, care should be taken to protect the four peripheral parts of the semi-tempered glass from damage. The installation design and construction damage must comply with the national compulsory industry standards. JGJ113-97 <Technical Regulations for the Application of Architectural Glass>.
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