The purpose and working principle of the hot and cold shock test chamber

The hot and cold shock chamber is used to test the material structure or composite material, and the degree to which it can endure in a continuous environment of extremely high temperature and extremely low temperature in an instant, so as to detect the chemical changes or physical damage caused by thermal expansion and contraction of the sample in the shortest time. The hot and cold shock test chamber is an indispensable reliability test equipment for various material industries such as electronics, communications, semiconductors, metals, plastics, rubber, etc. Now the research and development and testing of new products are particularly demanding and rigorous. The hot and cold shock test chamber is the must-have testing instrument for your laboratory. Nowadays, our company has a large number of hot and cold shock test chamber orders every year. Our technology and quality have been recognized and favored by the market. Many new customers are introduced by old customers. We are very pleased. Kewen believes that our adherence to the concept of "casting brilliance, only quality!" is wise and deeply recognized by customers. The following discusses and shares the experimental significance and experimental requirements of the hot and cold shock test chamber.

1. The purpose of the high and low temperature hot and cold shock test chamber test: to determine the adaptability and destructibility of the test product when the surrounding atmospheric temperature changes sharply, so as to assess whether the environmental adaptability and overall structural performance of the product are qualified.

2. Test conditions: High temperature box: RT～150℃, low temperature box: RT～-65℃, test temperature holding time: 1h or until the test sample reaches temperature stability, whichever is longer, number of cycles: Different test requirements for different industries and manufacturers are different, and the test is carried out according to the standard test method.

3. Recovery: After the test product is taken out of the hot and cold shock chamber, it should be restored under normal test atmospheric conditions until the test sample reaches temperature stability.

4. Requirements for high and low temperature hot and cold shock test chambers:

1. Use high temperature chambers and low temperature chambers for hot and cold shock tests to provide test samples with an environmental temperature that is subject to rapid changes in the surrounding air temperature.

2. The requirements for the high temperature zone should comply with the requirements specified in Chapter 3 of GJB150.3-86 "Military Equipment Environmental Test Method High Temperature Test".

3. The requirements for the low temperature zone should comply with the requirements specified in Chapter 3 of GJB150.4-86 "Military Equipment Environmental Test Method Low Temperature Test".

4. The volume of the test chamber should ensure that the test chamber (room) temperature can reach the test condition tolerance range specified in Article 3.2 of GJB150.1-89 when the test sample is placed in the standby for more than 10% of the test temperature holding time.

5. The hot and cold shock chamber provides high temperature test part and low temperature test part, which shall meet the requirements of each article in Chapter 3 of GJB150.3-86 and GJB150.4-86 respectively.

V. Control system:

1. The conversion time between low temperature zone and high temperature zone is less than or equal to 15 seconds.

2. The temperature recovery time is less than or equal to 5 minutes

The above is about the test purpose of the hot and cold shock chamber, the principle of the hot and cold shock chamber, the standard of the hot and cold shock chamber, the test standard of the hot and cold shock chamber, the working principle of the hot and cold shock chamber, the high and low temperature shock test method, the high and low temperature shock test standard, and the purpose of the high and low temperature hot and cold shock test. I hope that this article can help our customers to have a deeper understanding of the relevant information.