Glass annealing and linear expansion coefficient integrated test device, and method

Abstract

The invention discloses a glass annealing and linear expansion coefficient integrated test device, and a test method. According to the test method, a discharge port of a high temperature heating furnace is sealed with high temperature resistant transparent glass, a high definition camera is arranged on the high temperature resistant transparent glass, a sample to be tested is placed on a sample support which is used for supporting the sample to be tested and is arranged in the high temperature heating furnace, the sample support is provided with scale lines for recording of the change of the size of the sample, the high temperature heating furnace is used for annealing processing of the sample to be tested, natural cooling is carried out, moving of the sample to be tested is not needed, sothat secondary destroy or influences by the external environment are avoided, and at the same time, the thermal expansion coefficient of the sample is measured in the high temperature heating furnace, the high definition camera is used for real-time recording of the change of the size of the sample to be tested, so that accurate observing of the change situations of the sample to be tested is realized, and test result accuracy is ensured.

Description

technical field [0001] The invention belongs to the technical field of TFT-LCD substrate glass detection, and relates to a glass annealing and linear expansion coefficient integrated testing device and method. Background technique [0002] The thermal expansion coefficient of glass is an important physical property of glass. The thermal expansion coefficient of glass refers to its linear expansion coefficient, that is, the elongation of glass per unit time and unit length. The thermal expansion coefficient of glass is of great significance to the forming and annealing of glass. Through To characterize the thermal expansion coefficient of the glass can be compared with the thermodynamic stability of the glass. Usually, in order to minimize the influence of the stress of the glass itself on the test results, the glass will be annealed in the muffle furnace, and then taken out and put into the thermal dilatometer for testing. In the process, the length is often measured before ...

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Problems solved by technology

[0002] The thermal expansion coefficient of glass is an important physical property of glass. The thermal expansion coefficient of glass refers to its linear expansion coefficient, that is, the elongation of glass per unit time and unit length. The thermal expansion coefficient of glass is of great significance to the forming and annealing of glass. Through To characterize the thermal expansion coefficient of the glass can be compared with the thermodynamic stability of the glass. Usually, in order to minimize the influence of the stress of the glass itself on the test results, the glass will be annealed in the muffle furnace, and then taken out and put into the thermal dilatometer for testing. In the process, the length is often measured before heating, and the measured length is taken out after heating, and then the thermal expansion coefficient of the glass is calculated. However, during the measurement process, due to the high temperature after heating, the measurement cannot be carried out in time, and the measurement result is affected by the temperature. Inaccurate, and at the same time, it will cause secondary damage during the transfer process, which will affect the accuracy of the test results

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