Thermal shock chambers perform tailored environmental stress screening of component and board electronic assemblies. Thermal shock test chambers is used to detect the chemical changes or physical damage caused by thermal expansion and contraction of the sample in the shortest time. Thermal shock is divided into air to air type thermal shock and liquid to liquid thermal shock. Air to air type thermal shock test chamber is more popular.
Air type thermal chambers can be divided into three-zone type and two-zone type thermal shock tester according to test requirements and test standards. The difference lies in the test method and internal structure. Three-zone type thermal cycle test chamber is divided into a cold storage room, a heat storage room and a test room.
Your product is placed in the test room during testing.
The two-box type temperature shock chamber is divided into a high-temperature room and a low-temperature room.
The motor drives the basket to switch between high and low temperatures. The product is placed in the basket and moves with the basket.
The liquid to liquid type thermal shock chamber is mainly for PCB test.
The induced thermal stresses in the chamber can reveal hidden manufacturing defects in electronic sub-assemblies and other components by the expansion and contraction of critical parts.
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Temperature recovery time is 3 mins to 5 mins.
It just needs 15 mins for the basket move between high-temperature zone and low-temperature zone.
Usually, our chamber needs to use water cooling type because it is better and faster. Air cooling needs more requirements about the environment.
They are mainly different in structure. The zones type consists of two parts, a high-temperature zone and a low-temperature zone. The conversion of high and low temperatures is achieved by moving a hanging basket up and down; the 3 zones type is divided into three independent boxes: high-temperature zone, low-temperature zone and test zone. The product is placed in the test area, and temperature conversion is realized through wind circulation in the high and low-temperature areas.