The thermal shock test chamber is to test the product's ability to withstand extremely high temperature environment and extremely low temperature environment, and obtain the chemical change or physical change caused by the thermal expansion and contraction of the test sample in a short period of time.
In order to meet the different needs of the market, the thermal shock chamber can be divided into the following three types according to the temperature shock method.
"Hatchbox" is also a high temperature room and a low temperature room. It mainly uses the motor to trigger the movement of the basket, and the product is placed in the basket and then transferred, so as to achieve the purpose of high and low temperature conversion, which is a dynamic product. This style of test chamber temperature shock conversion time can be completed in just 15 seconds, and the recovery time does not exceed 5 minutes.
The hatchback type equipment does not need extra air exhaust time. It uses the motor to drive the basket to move up and down. However, it is a little bad, because such mechanical movement is easy to cause wear and tear, and the equipment is checked regularly. Thermal shock test chambers require more time and money to maintain.
The silicone oil is injected into the high temperature chamber and the low temperature chamber, and the tested product is placed in the basket, and then the basket is continuously moved between the high temperature chamber and the low temperature chamber, thereby achieving the purpose of drastic temperature changes. Unlike the aforementioned hatchback test box, this thermal shock test box has a faster temperature transition rate.
That is, a test chamber with a high temperature box, a low temperature box and a normal temperature box is a static product. The tested product will be tested when it is in the normal room. It only needs to start and close the dampers of the high temperature room and the normal room, and the dampers of the low temperature room and the normal room, to cause the impact effect of high temperature and low temperature. Since this test equipment needs exhaust time, the temperature in the test tank can quickly change to normal temperature, which is convenient for taking and placing test samples.
Also, because the tested product does not need a motor to drive the product to move, this static test method can not only save energy but also reduce the wear and tear of equipment components. This type of thermal shock test box is in a relatively stable state during the test, the temperature shock conversion can be completed within 3 seconds, and the recovery time is the same as the hatchback, within 5 minutes.