As the core equipment for simulating extreme temperature environments, the high-low temperature chamber (also known as the high-low temperature test chamber) plays a key role in "environmental simulation → performance verification → quality screening". By accurately reproducing high temperature, low temperature, and temperature cycling scenarios, it evaluates the reliability and stability of materials and products under extreme temperature changes. It is widely used in multiple fields such as electronics, automotive, aerospace, and medicine. Its specific functions are as follows:
1、 Electronic and Electrical Industry: Ensuring Stable Operation of Products in Extreme Environments
Electronic components (chips, resistors, capacitors) and terminal devices (mobile phones, computers, servers) may face high temperatures (such as outdoor in summer and internal heat dissipation of equipment) and low temperatures (such as winter in northern China and high-altitude environments) during production, transportation, and use. The core function of the high and low temperature box is to:
Screening of unqualified products: By simulating the conventional temperature range of -40 ℃~85 ℃ (some models can reach -70 ℃~150 ℃), test the conductivity and insulation of components at extreme temperatures, and eliminate defective products that cause short circuits or open circuits due to temperature changes;
Verify device reliability: Conduct temperature cycling tests on the entire machine (such as mobile phones, industrial controllers) (such as -20 ℃ for 2 hours → room temperature recovery for 1 hour → 60 ℃ for 2 hours), assess battery life, screen display, motherboard stability, and avoid product crashes, lagging, and sudden battery life drops due to temperature changes during actual use;
Accelerated aging test: By combining high temperature (such as 85 ℃) and high humidity (such as 85% RH) environments, the aging process of electronic components is accelerated, the service life of products is predicted, and data support is provided for product design improvement (such as optimizing heat dissipation structures and selecting temperature resistant components).
2、 Automotive industry: adapting to the full lifecycle environment of vehicles and components
Automobiles undergo rigorous temperature tests from research and development to mass production. High and low temperature chambers can cover multi-dimensional testing requirements for components and the entire vehicle
Component performance verification: Test the temperature resistance of engine components (such as sensors, seals), electronic control systems (such as ECU, autonomous driving module), and interior materials (such as seat leather, instrument panel plastic) at -40 ° C~120 ° C to ensure that they do not fail in harsh and hot environments (such as high-temperature softening and leakage of seals, low-temperature brittleness);
Environmental adaptability test of the whole vehicle: in the high and low temperature test room of the whole vehicle, simulate the extreme climate of -30 ℃~60 ℃, test the starting performance of the vehicle, the heating/cooling effect of the air conditioner, the fuel economy, and the anti-aging ability of rubber parts and paint surface, to ensure the reliability of the vehicle in different regions and seasons;
Special testing for new energy vehicles: Conduct high-temperature (such as 60 ℃) cycle charging and discharging tests and low-temperature (such as -20 ℃) starting capacity tests on power batteries, motors, and electronic control systems to verify the safety and range stability of batteries under extreme temperatures, and avoid thermal runaway or low-temperature range "halving" problems.
3、 Aerospace and Military Industry: Meeting High Reliability Requirements in Extreme Environments
Aerospace equipment (satellites, rockets, aircraft components) and military products (weapons and communication equipment) need to withstand extreme temperature changes in space and high altitude (such as severe fluctuations of -180 ℃~120 ℃ in space). The function of the high and low temperature box is to:
Simulate extreme space/high-altitude environments: Verify the structural integrity and functional stability of satellite solar panels, rocket engine valves, and aircraft avionics systems under extreme temperature changes through rapid temperature changes (temperature change rate up to 5 ℃/min) and ultra-high/low temperature (-85 ℃~150 ℃) tests;
Assessment of anti fatigue performance: By repeatedly cycling the temperature (such as -55 ℃~85 ℃ for 500 times), the thermal fatigue strength of the material is tested to avoid structural cracking and component detachment caused by temperature expansion and contraction, ensuring the safety of the equipment during long-term service;
Environmental adaptability certification for military products: According to GJB requirements, weapons and equipment are stored and tested for high and low temperatures to ensure normal start-up and precise operation in cold battlefields (such as polar and high latitude regions) and high-temperature desert environments.
4、 Materials and Chemical Industry: Evaluating the Temperature Resistance and Stability of Materials
The temperature resistance of materials such as plastic, rubber, metal, and coatings directly determines their application scenarios. High and low temperature chambers can achieve:
Material basic performance testing: testing the thermal deformation temperature of plastics, low-temperature brittleness of rubber, and thermal expansion coefficient of metals to determine whether the material is suitable for the target usage environment (such as materials around car engines that need to withstand high temperatures above 100 ℃, and outdoor pipes that need to withstand low temperatures of -30 ℃);
Aging and degradation test: Accelerate the aging of materials (such as yellowing of plastics, cracking of rubber, peeling off of paint) through long-term high temperature or temperature cycle, evaluate the service life of materials, and provide basis for material selection (such as selecting weather resistant paint for outdoor building materials) and formula improvement (such as optimizing rubber anti-aging additives);
Stability testing of chemical products: testing the performance changes of chemical products such as coatings, adhesives, lubricants, etc. in high and low temperature environments (such as the low-temperature application flowability of coatings and the high-temperature viscosity stability of lubricants), to ensure that the products meet the performance standards during storage and use.