The high and low temperature impact 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, and the degree of endurance under the continuous environment of extremely high temperature and extremely low temperature in an instant , Can detect the chemical change or physical damage caused by thermal expansion and contraction of the sample in the shortest time. Technical Parameter: Product Name: High and low temperature impact test chamber (two-box type) Product Number: DRK636 Studio Size: 400mm×450mm×550mm (D×W×H) Outer Size: 1300mm×1100mm×2100mm (height including bottom corner wheel) Impact Temperature: -40~150℃ Product Structure: Two box vertical Experiment Method: Test trough movement High Greenhouse Preheat Temperature Range: Ambient temperature~150℃ Heating time: ≤35min (single operation) High temperature shock temperature: ≤150℃ Low-temperature Greenhouse Pre-cooling Temperature Range: Ambient temperature~-55℃ Cooling Time: ≤35min (single operation) Low Temperature Impact Temperature: -40℃ Test requirements: +85℃~-40℃ Conversion time ≤5min -40℃ stable time 30min     Refrigeration system and compressor: In order to ensure the cooling rate and minimum temperature requirements of the test chamber, this test chamber adopts a binary cascade air-cooled refrigeration system composed of two sets (two French Taikang) hermetic compressors. The refrigeration process is as follows: the refrigerant is adiabaticly compressed by the compressor to a higher pressure to increase the exhaust temperature, and then the refrigerant exchanges heat with the surrounding medium through the condenser isothermally, and transfers the heat to the surrounding medium. After the refrigerant expands through the valve adiabaticly to do work, the temperature of the refrigerant decreases. Finally, the refrigerant absorbs heat isothermally from the higher temperature object through the evaporator, so that the temperature of the cooled object is lowered. This cycle repeats itself to achieve the purpose of cooling down.