12mm Tempered Safety Glass for Pool Fence - China Suppliers and Factory جودة عالية

Tempered glass is a type of safety glass processed by controlled thermal or chemical treatments to increase its strength compared with normal glass. When broken, it shatters into small granular chunks instead of splintering into jagged shards, making it safer for use in various applications.

1. Production Process

The production of tempered glass primarily involves a thermal tempering process, which induces compressive stress on the glass surface and tensile stress in the core.

Tempered glass exhibits remarkable thermal stability, capable of withstanding temperature fluctuations ranging from 250 to 320°C. In contrast, ordinary annealed glass can only tolerate temperature changes between 20 and 100°C.

Heating (Furnace Process):

The clean glass is fed into a tempering furnace (also known as a tempering oven or lehr). Inside the furnace, the glass is heated to a very high temperature, typically between 620°C to 700°C (1150°F to 1300°F), which is just above its annealing point but below its melting point. The heating process is carefully controlled to ensure uniform temperature distribution throughout the glass. The glass softens slightly at this temperature.

Quenching (Rapid Cooling):

Immediately after reaching the desired temperature, the hot glass is rapidly cooled (quenched). This is achieved by blowing high-pressure air blasts onto both surfaces of the glass simultaneously and uniformly. The rapid cooling causes the outer surfaces of the glass to cool and solidify much faster than the inner core.

Stress Creation (Compression & Tension):

As the outer surfaces cool and harden, they contract. The interior, still hot and molten, continues to cool and contract more slowly. The faster-cooled outer layers are put into compression, while the slower-cooled interior remains in tension. This locked-in stress state (compressive stress on the surface and tensile stress in the core) is what gives tempered glass its significantly increased strength and its characteristic safe breakage pattern.

Materials

The primary materials involved in tempered glass production are:

Tempered Laminated Glass is an engineered composite that fuses the exceptional strength of tempered glass with the secure integrity of laminated glass. Two or more sheets of fully tempered glass are permanently fused with one or more polymer interlayers—most commonly PVB, EVA, or SGP—under controlled heat and pressure. The result delivers unmatched safety, robustness, long service life, and a host of additional performance advantages. Manufacturing this product is a multi-step operation that merges the distinct tempering and lamination processes.

Core structure: ultra-strong tempered-glass sheets that deliver superb impact resistance and thermal stability. They can be specified in numerous thicknesses, hues, tints, and with optional coatings such as reflective or low-iron finishes.

Interlayer: the critical bonding sheet that dictates safety and added performance. Selection hinges on the project’s specific demands:

Tempered laminated glass marries the strongest virtues of tempered and laminated glass into one solution:

Due to its superior safety and performance characteristics, tempered laminated glass is ideal for high-demanding applications:

Specific parameters will vary based on glass thickness, number of layers, interlayer type, and manufacturer capabilities.