Temperli Cam

Tempered glass is a safety glass enhanced through a specialized thermal treatment. Glass panels are heated to approximately 650–700°C and then rapidly cooled using a high-velocity air blast. This process induces compressive stress on the surface and tensile stress in the interior, significantly increasing resistance to breakage. It is four to five times more durable than standard flat glass. This structure has widely expanded its use in applications requiring safety and impact resistance.

^{Tempered glass (generated by artificial intelligence)}

Tempered glass exhibits high resistance to impact, bending, and thermal shock. When broken, it shatters into small fragments with non-cutting edges, making it advantageous from a safety perspective. For example, while standard flat glass has a risk of cracking under sudden temperature changes of 150°C, tempered glass can withstand sudden temperature changes up to 250–300°C. Additionally, the flexural strength of tempered glass, which varies by glass type, is generally above 120 MPa.

Quality testing after the tempering process is mandatory. The most commonly used tests are:

• Thermal Shock Test: Measures the glass’s resistance to temperature differentials.
• Impact Test (Hammer or Ball Test): The fracture behavior is observed using a hammer or metal ball dropped from a specified height.
• Fragment Count Test: The number of fragments within a 5 cm x 5 cm area is counted. For example, in flat glass with a thickness of 4–12 mm, this number must be at least 40.
• Bending Test: The elastic limits of the glass are measured.
• Optical Quality Tests: Visual distortion, glare, and light transmittance are inspected.

Recently developed partially frosted tempered glass with reduced surface roughness offers both aesthetic and functional advantages. Special chemical polishing treatments using hydrofluoric acid (HF) increase light transmittance to 90.4% and glossiness to 33.7. These glasses exhibit twice the scratch resistance of frosted glass (0.8 N). Additionally, features such as anti-fingerprint and anti-glare coatings enhance their functional value, particularly in white goods and interior design.

Today, manual inspections such as fracture counting by the human eye are being replaced by systems based on image processing techniques. Embedded systems composed of cameras, light platforms, and morphological analysis algorithms operate through steps including grayscale simplification, contour detection, and shape classification. These systems achieve a 91.1% success rate and significantly reduce human error.

Tempered glass is used across numerous fields, from construction to transportation:

• Architecture: Facade claddings, glass balconies, glass railings.
• Interior Design: Shower cabins, tabletops, display cases.
• White Goods: Oven doors, glass cooktop surfaces.
• Transportation: Vehicle windows, train and aircraft interior partitions.
• Security: Inner layer of bullet-resistant glass laminates.

Tempered glass can be colored, patterned, or combined with laminated structures to provide advanced security solutions tailored to specific application requirements.