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In our daily lives, tempered glass is widely used in various places, such as windows, car windshields, high-altitude walkways, and more. These glasses are often exposed to extreme weather conditions, making their weather resistance and safety crucial. To ensure that tempered glass maintains its performance under extreme temperatures, conducting high and low temperature tests is necessary. This article will explore why tempered glass needs to undergo testing using a high and low temperature test chamber and a thermal shock testing chamber, to realistically simulate extreme temperatures in nature and test the quality of the glass.
Tempered glass undergoes special treatment during manufacturing to enhance its strength and heat resistance. However, even glass that has been tempered may still be affected by extreme temperature conditions. In actual use, tempered glass often faces challenges from high and low temperatures, making it necessary to conduct high and low temperature tests during the research and development stage to verify its weather resistance.
The high and low temperature test chamber can simulate extreme temperature conditions in nature, testing the performance of glass in high and low temperature environments. Through these simulated tests, the impact resistance, heat resistance, and other potential defects of the glass can be checked to ensure its safety and reliability in actual use.
The high and low temperature impact resistance of tempered glass is an important indicator for assessing its weather resistance. As a typical type of the environment testing equipment, the high and low temperature test chamber is used to simulate the performance of glass under extreme temperature changes. The specific test steps are as follows:
Test preparation
Place the tempered glass sample into the high and low temperature test chamber.
Low-temperature test
Set the test chamber temperature to -20℃, conduct a low-temperature test for 15 hours, and then keep it in a normal temperature environment for 9 hours.
High-temperature test
Next, set the test chamber temperature to 55℃ and conduct a high-temperature test for 15 hours.
Alternate testing
Repeat the above low and high-temperature alternate tests until 24 hours, 48 hours, 72 hours, and 96 hours. Check for any bulging or breaking of the samples after each test.
According to the inspection standards, if all4samples do not break, the performance is considered qualified; if more than2samples break, it is considered unqualified. If1sample breaks, an additional1sample needs to be added. If it meets the requirements, it is considered qualified. If it still fails, an additional4samples need to be tested.
The thermal shock resistance test is used to evaluate the tolerance of tempered glass to abrupt temperature changes. The thermal shock testing chamber is used to simulate this temperature shock. The test method includes:
High-temperature test
Place 300 mm x 300 mm tempered glass samples in a high-temperature test chamber set at200℃±2℃ for thermal insulation for more than 4 hours.
Low-temperature shock
Then set the energy-saving thermal shock test chamber to 0℃ and place the tempered glass in a mixture of ice and water, ensuring1/3of the sample height is immersed in water. After 5minutes, observe whether the glass is damaged. Fish scale-like peeling on the surface and edges of the glass is not considered damage.
These tests help manufacturers evaluate the extreme temperature conditions that tempered glass may encounter in actual use, ensuring that its performance is not affected.
In conclusion, high and low temperature test chambers play a critical role in tempered glass testing. By simulating extreme temperature environments, these tests can verify the impact resistance and heat resistance of the glass, ensuring its safety and reliability under various environmental conditions. This not only helps improve product quality but also prevents safety accidents caused by material defects.
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