Analysis of the principle and characteristics of the thermal shock test chamber1

Principle: The thermal shock testing machine is used in electronic and electrical components, automation components, communication components, auto parts, metal, chemical materials, plastics and other industries, defense industry, aerospace, military industry, BGA, PCB base plate, electronic chip IC , The physical changes of semiconductor ceramics and polymer materials, test the repeated tensile force of the materials to high and low temperature and the chemical changes or physical damage of the products during thermal expansion and contraction, to confirm the quality of the products, from precise IC to The ideal test tool for heavy machinery components that do not need it. Features of the thermal shock testing machine: 1. The product has beautiful appearance, reasonable structure, advanced technology, sophisticated material selection, simple and convenient operation performance and reliable equipment performance. The equipment is divided into three parts: a high temperature box, a low temperature box and a test box. It adopts a unique thermal insulation structure and heat storage and cold storage effect. During the test, the object to be tested is completely static, and the cold and hot temperatures are introduced into the test area by switching between hot and cold air paths. The purpose of the thermal shock test. 2. The most advanced measuring device is adopted, and the controller adopts a large-scale color LCD human-machine touch interactive LCD human-machine interface controller, which is easy to operate, easy to learn, stable and reliable, and has a complete display in both Chinese and English. system operating conditions, execution and set program curves. With 96 test specifications independently set, the impact time is 999 hours and 59 minutes, and the cycle period can be set from 1 to 999 times. Start and stop working; 3. There is a test hole with a diameter of 50mm on the left side of the box, which can be used for external power load wiring test components. The function of three different conditions of high temperature, low temperature and cold and hot shock can be independently set, and when the cold and hot shock conditions are executed, two or three grooves and the function of cold punch and hot punch can be selected for shock, with high and low temperature. function of the testing machine. 4. Equipped with fully automatic, high-precision system loop, any mechanical action, fully P.L.C locking processing, all using P.I.D automatic calculation control, high temperature control accuracy. Advanced and scientific air circulation design, make the indoor temperature uniform, avoid any Dead angle; complete safety protection device avoids any potential safety hazards and ensures the long-term reliability of the equipment. 5. The number of cycles and defrost times can be set to automatically (manually) defrost. The switching time of the damper mechanism is completed within 10 seconds, and the temperature recovery time of Bell brand hot and cold shock temperature is completed within 5 minutes. Status display and curve display during operation. When abnormal conditions occur, the screen will automatically display the fault point and cause and provide troubleshooting methods. When it is found that the input power is unstable, it has an emergency stop device. 6. The refrigeration system adopts the design of the overlapping high-efficiency low-temperature circuit system. The refrigeration unit adopts the compressor imported from Europe and the United States, and adopts the green environmental protection (HFC) refrigerant R507, R23 with zero ozone coefficient. Super safety protection function: power overload protection , leakage protection, control loop overload, short-circuit protection, compressor protection, grounding protection, over-temperature protection, alarm sound prompts, etc. Main technical parameters of thermal shock testing machine: Temperature range of high and low temperature zone: [high temperature zone: +80℃ to +200℃; low temperature zone: -10℃ to -55℃] Temperature test range: [high temperature: +60℃ To +150℃; Low temperature: 0℃ to -40℃] Control accuracy: [+(-)2℃] Analysis accuracy: [0.01℃] High temperature zone heating time: [From normal temperature to 150℃, about 60 minutes] Low temperature zone Cooling time: [From normal temperature to -40℃, about 80 minutes] Test area temperature recovery time: [3-5 minutes]

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