The structure of the thermal shock test chamber

The thermal shock test chamber is a necessary testing equipment for the metal, plastic, rubber, electronic and other material industries. It is used to test the material structure or composite material. It can withstand the extreme high temperature and low temperature in an instant. *Detect the chemical changes or physical damage caused by thermal expansion and contraction of the sample in a short time.

The structure of the thermal shock test chamber equipment usually has three forms: single-chamber type, vertical lifting type and horizontal two-chamber type. The single-chamber type has a poor feasibility due to the large amount of refrigeration required and the amount of added capacity. The practical application of this structure is poor; the vertical lifting type avoids the influence of the external environment through the internal lifting conversion, but due to the lifting device itself As a heat load, it consumes cold or heat, so this method is usually suitable for small test chamberes. For medium and large test chamberes, this method is not suitable because the lifting device is too heavy. The horizontal two-chamber type passes through the mutual between the two chamberes. The conversion reduces the load of the cabinet and reduces the cooling and heating capacity of the equipment, but it requires a level conversion device and will be affected by the external environment.

Therefore, the choice of test method should be analyzed in detail according to the specific situation. For small equipment, the vertical lifting method uses one less cabinet, which can save costs; but for medium and large temperature shock test chambers, as long as the plan is reasonable and feasible, it can be guaranteed to meet According to the requirements of the national military standard, the use of a horizontal two-chamber test scheme is a better choice.