The temperature range of quartz glass, specifically transparent quartz tubes, extends from room temperature up to approximately 1100 degrees Celsius. This high-temperature tolerance is due to its low coefficient of thermal expansion and excellent resistance to thermal shock.
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High-Temperature Tolerance: Transparent quartz tubes can withstand temperatures up to 1100 degrees Celsius. This makes them suitable for applications requiring high-temperature stability, such as in furnaces or for handling high-temperature processes.
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Resistance to Thermal Shock: Quartz tubes are noted for their ability to withstand rapid temperature changes, such as from 1000 degrees Celsius to room temperature. This characteristic is crucial in applications where sudden temperature fluctuations are common, ensuring the integrity and functionality of the quartz tubes under such conditions.
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Softening Point and Usage Guidelines: The softening point of quartz tubes is 1270 degrees Celsius. However, when used at 1200 degrees Celsius, it is recommended not to exceed 3 hours of continuous use to prevent any potential damage or degradation of the material.
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Impact on Thermocouples: Over time, quartz can affect thermocouples, leading to inaccurate temperature readings. This can result in actual firing temperatures being up to 100 degrees Celsius higher than programmed, which is a critical consideration for precise temperature control in various industrial processes.
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Temperature Control in Industrial Processes: The consistency and accuracy of temperature control from room temperature to 900 degrees Celsius, and the rate of cooling back from peak temperatures, are crucial for the integrity of materials processed in quartz tubes. This highlights the importance of precise temperature management in applications involving quartz glass.
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