Let's Quickly Look Temperature Cycling chamber And Temperature Shock

So far, there are still many people who think that the application of temperature shock test and temperature cycle test is similar, because people do not know enough about the differences between the two test equipment, and even consider them as the same test, if you are reading this article also think that there is no difference between temperature shock and temperature cycle, then you are wrong.
Temperature shock
Temperature shock test, known as high and low temperature shock test, cold and thermal impact test, is used to test the degree of material structure or composite material that can be tolerated under the continuous environment of extremely high temperature and extremely low temperature in an instant, so as to test chemical changes or physical damage caused by thermal expansion or contraction in a short time. The temperature impact test chamber has a temperature change rate greater than 10 degrees/minute, and the heating/cooling rate is not less than 30C/ minute. The temperature change range is large, and the test severity also increases with the increase of the temperature change rate

Temperature cycle test

Temperature cycle test is also known as thermal cycle test, high and low temperature cycle test, that is, the test sample is exposed to a preset high and low temperature alternating test environment. In order to avoid the impact of temperature shock, the temperature change rate during the test must be less than 20℃/ min. At the same time, in order to achieve the effect of creep and fatigue damage, it is recommended that the test temperature cycle is 25℃~100℃, or it can also use a cycle test of 0℃~100℃ according to the use of the product, and the exposure time is 15 minutes.

The difference between temperature impact test chamber and Temperature cycling chamber is mainly due to the different stress loading mechanism. The temperature shock test mainly examines the failure caused by creep and fatigue damage, while the Temperature cycling test mainly examines the failure caused by shear fatigue. Temperature shock test allows the use of two tank test equipment; The temperature cycle test was carried out with a single tank test device. The temperature change rate in the second tank should be greater than 50 ° C /min. Therefore, the most fundamental difference between the Temperature cycling test and the temperature shock test is that the temperature conversion is carried out at a constant rate
Under normal circumstances, if the change rate exceeds 5℃/min, it can be considered as a rapid temperature change test. Temperature shock is to realize the exchange of high temperature and low temperature regions within a specified time. The general test method requires the temperature zone switching time to be within 20S. The outlet temperature of the test chamber can be stabilized within 5min, and the sample temperature can be stabilized within 15min. It can accurately simulate complex natural environments such as low temperature, high temperature, high temperature and high humidity, low temperature and low humidity. It is suitable for reliability testing of plastics, electronics, food, clothing, vehicles, metals, chemicals, building materials and other industries.
The temperature cycle test chamber can provide a high temperature and high humidity environment to compare the material changes and strong decay reduction degree of rubber and plastic before and after the test; It can also simulate the container environment to detect the fading and shrinking of rubber and plastic under high temperature and humidity.
The equipment is designed to test the heat resistance, cold resistance and moisture resistance of various materials.
Temperature shock is mainly used in the furnace heat test and heating test of battery safety performance test, but compared with the temperature cycle test chamber, the temperature shock test chamber has no humidity.