Cold and hot shock, i.e. high and low temperature shock test, is to expose the test sample to the continuous alternating environment of high and low temperature, make it experience rapid temperature changes in a short time, and assess the adaptability of the product to the rapid changes of ambient temperature.
Cold and hot shock test is an indispensable test in equipment design qualification test and routine test in batch production stage. In some cases, it can also be used for environmental stress screening test. It can be said that the application frequency of cold and hot shock test chamber in verifying and improving the environmental adaptability of equipment is second only to vibration and high and low temperature test.
Test purpose
Cold and hot shock test is mainly used to verify the use and storage of samples under the conditions of rapid change of high temperature and low temperature. It is an indispensable test in the identification test of equipment design finalization and routine test in batch production stage. In some cases, it can also be used for environmental stress screening test.
Scope of application
Cold and heat shock is mainly aimed at electronic products, mechanical parts and auto parts.
Specific examples of cold and heat shock
Movement between warm and cold rooms
Sudden cooling due to rain or cold water
The power on and off causes the temperature of the parts to rise suddenly
On / off of air conditioning or heating
Rapid ascent and descent of aircraft
Solder cracking due to poor process
Method standard
Test standard reference: GB / T 2423.22, IEC 60068-2-14, en 60068-2-14.
