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Generally speaking, the operation of high and low temperature impact test chambers is divided into five parts: pretreatment, initial detection, testing, recovery, and final detection. Below, Hengtai Fengke will share with you the detailed process content:
1、Preprocessing: Place the tested sample under normal atmospheric conditions until the temperature stabilizes.
2、Initial testing: Compare the tested sample with the standard requirements and place it directly into the high and low temperature impact test chamber after meeting the requirements.
3、Experiment:
1）The test sample should be placed in the high and low temperature impact test chamber according to standard requirements, and the temperature inside the test chamber (room) should be raised to the designated point and maintained for a certain period of time until the test sample reaches temperature stability, whichever is longer.
2）After the high temperature stage, transfer the test sample to a low-temperature test chamber (room) that has been adjusted to -55 ℃ within 5 minutes, and maintain it for 1 hour or until the test sample reaches temperature stability, whichever is longer。
3）After the low-temperature stage is completed, transfer the test sample to a high-temperature test chamber (room) that has been adjusted to 70 ℃ within 5 minutes, and maintain it for 1 hour or until the test sample reaches temperature stability, whichever is longer.
4）Repeat the above experimental method to complete three cycles. Depending on the size of the sample and the space available, there may be slight variations in time.
4、Recovery: After the test sample is taken out of the test chamber, it should be restored under normal test atmospheric conditions until the test sample reaches temperature stability.
5、Final testing: Evaluate the test results based on the degree of damage specified in the reference standards and other methods.
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