Non-standard thermal shock test equipment (13538469076 bear s/qq) is used to test the material structure or composite material, which can be tolerated in a continuous environment of high temperature and low temperature in an instant, suitable for scientific research, schools, factories, military, etc. The unit is used for the adaptability test of various materials such as electricians, electronic products, semiconductors, electronic circuit boards, metal materials, bearings, etc. in the environment of rapid temperature changes. The thermal shock test is performed using a high temperature chamber and a low temperature chamber to provide an ambient temperature at which the test sample is subjected to abrupt changes in ambient air temperature.
Non-standard thermal shock test equipment has many factors that have a great impact on the use and life of engineering products (equipment). Engineers engaged in the study of environmental conditions of engineering products will study the conditions of the environment and the environmental conditions induced by human activities. It is organized into a series of test standards and specifications to guide the environmental and reliability tests of engineering products. Therefore, the main basis for our selection of environmental and reliability test equipment is engineering products and test standards.
Second, in order to standardize the tolerance of the environmental kit in the test equipment. To ensure the control accuracy of environmental parameters, the national technical supervision organization and various industrial departments have also customized a series of important basis for environmental and reliability test equipment. Test equipment that does not meet the requirements of these verification procedures is not allowed to be put into use.
1. Non-standard thermal shock test equipment refrigeration system and compressor: In order to ensure the test cooling rate and low temperature requirements, this test box adopts a set of German COPEANDBAN semi-hermetic compressors.
There is a binary multi-layer environmentally-friendly refrigerant refrigeration system, the cascade system comprises a high-pressure refrigeration cycle and a low-pressure refrigeration cycle, and the connecting vessel is an evaporating condenser function to reduce the pressure cycle of the evaporator as a high-pressure circulation condenser Only use.
The design and application of the energy-conditioning technology of the refrigeration system is an effective treatment method to ensure the effective adjustment of the energy consumption and cooling capacity of the refrigeration system under the normal operation of the refrigeration unit, so as to operate the refrigeration system. The cost has dropped to a more economical attitude.
2, non-standard thermal shock test equipment refrigeration working principle: high and low refrigeration cycle evenly using reverse card cycle, the cycle consists of two isothermal processes and two adiabatic processes, the process is as follows: refrigerant through the compressor adiabatic compressor The high pressure consumes the work to raise the temperature of the exhaust gas, and then the refrigerant is heat-exchanged with the surrounding medium through the condenser to transfer heat to the surrounding medium. After the refrigerant is adiabatically expanded by the shut-off valve, the temperature of the refrigerant drops to this point, and the cycle is repeated to achieve the purpose of lowering the temperature.
3. Test purpose: to determine the adaptability and destructiveness of the test product when the ambient temperature changes rapidly.
4. Test conditions: high temperature box: RT ~ 150 °C, low temperature box: RT ~ -60 °C, test temperature retention time: 1h or until the test sample reaches temperature stability, whichever is longer, the number of cycles: for different industries Different manufacturers have different test requirements and are tested according to the test methods on the standard.
5. Recovery: After the test product is taken out from the hot and cold impact box, it should be restored under normal test atmospheric conditions until the test sample reaches temperature stability.
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