High-low temperature test box capable of quickly changing temperature for double-temperature-zone thermal mechanical fatigue test

Abstract

The invention relates to a high-low temperature test box capable of quickly changing temperature for a double-temperature-zone thermal mechanical fatigue test. The high-low temperature test box is used for a thermomechanical fatigue test of a glass transparent part. A box body (1) is arranged on a mechanical fatigue testing machine, a fatigue sample (2) penetrates through the upper and lower end faces of the box body (1) and is clamped between an upper clamp and a lower clamp of the mechanical fatigue testing machine, and the test box is characterized in that a partition plate (3) is arrangedin a test box (7) in the box body (1) to divide the space in the test box (7) into two independent temperature intervals (4), so that the transition surface and the opposite surface of the fatigue sample (2) are respectively positioned in the two independent temperature intervals (4), and the two independent temperature intervals (4) are sealed intervals. The problems that an existing high-low temperature test box for the fatigue testing machine is low in temperature changing speed and can only provide a single test temperature area are solved.

Description

technical field [0001] The invention is a high and low temperature test box for thermomechanical fatigue test with dual temperature zones capable of rapid temperature change, which belongs to the structural technology of products. Background technique [0002] The high and low temperature test chamber has dual functions of heating and cooling. It is generally used in the high and low temperature test chamber of the fatigue testing machine. Except that the mechanical structure of the box is matched with the fatigue testing machine, the high and low temperature is realized by the built-in heating wire and the inner layer of the interlayer. Inject liquid nitrogen or dry ice for slow temperature change and maintain a single test temperature environment. [0003] The structure of the high and low temperature test chamber mainly includes control system, refrigeration system, heating system, temperature monitoring system and air circulation system. The control system determines im...

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Problems solved by technology

[0004] The present invention aims at the deficiencies in the above-mentioned prior art and provides a high and low temperature test chamber for thermomechanical fatigue test with dual temperature zones that can rapidly change temperature. The temperature change rate is slow, and only a single test temperature zone can be provided

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