Introduction:

Cryogenic testing refers to the process of evaluating materials, components, or systems in extremely low-temperature environments to assess their performance, reliability, and durability under extreme cold conditions. This type of testing is commonly used to simulate and study the behavior of products in low-temperature environments, ensuring they function properly in real-world applications. Cryogenic testing is particularly suitable for products and equipment that must operate in extremely cold conditions, such as in aerospace, automotive industries, electronic devices, energy development, and scientific research.

Key Elements of Cryogenic Testing:

1. Extremely low temperature range: Cryogenic testing typically involves temperatures as low as -80°C or even lower (e.g., liquid nitrogen cooling can reach -196°C), depending on test requirements and equipment capabilities.

2. Precise temperature control: The ability to maintain set low-temperature conditions with high accuracy, usually with a very small margin of error (e.g., ±1°C or smaller), to ensure the accuracy and repeatability of test results.

3. Long-term stability testing: To evaluate the long-term cold resistance and aging characteristics of materials or products, cryogenic testing often requires extended durations, sometimes up to thousands of hours.

4. Comprehensive environmental simulation: In addition to low temperatures, tests can incorporate other environmental factors such as humidity, wind speed, and vibration to more realistically simulate actual usage conditions.

Test Item: Low-Temperature Testing

Technical Parameters:

Only perform:

1. Volume: ≤162m3 (6000mm×4500mm×6000mm)

2. Temperature: -180°C to room temperature

Only perform:

1. Volume: ≤6m3

2. Temperature range: -70°C to room temperature

Standards:

GJB 150.4-1986 4.1,4.2 Environmental Test Methods for Military Equipment - Low-Temperature Testing

GJB 150.4A-2009 7.2.1,7.2.2,7.2.3 Laboratory Environmental Test Methods for Military Equipment - Part 4: Low-Temperature Testing

GJB 4.3-1983 4 Environmental Testing for Naval Electronic Equipment - Low-Temperature Testing

GJB 4.4-1983 4 Environmental Testing for Naval Electronic Equipment - Low-Temperature Storage Testing

GJB 367A-2001 A01 General Specification for Military Communication Equipment - GJB 367A-2001 A01 Low-Temperature Testing 4

GB/T 2423.1-2008 5.2,5.3,5.4 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test A: Low Temperature

IEC 60068-2-1:2007 5.2,5.3,5.4 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test A: Low Temperature

MIL-STD-810F-2000 Department of Defense Test Method Standard - Environmental Engineering Considerations and Laboratory Tests - Part Two Laboratory Tests - MIL-STD-810F-2000 Method 502.4 Low Temperature 4.5.2,4.5.3,4.5.4

HB5830.9-1984 5 Environmental Conditions and Tests for Airborne Equipment - Low Temperature

GJB322A-1998 4.7.10.1.1 General Specification for Military Computers

MIL-STD-810H-2019 Environmental Engineering Considerations and Laboratory Tests - MIL-STD-810H-2019 Method 502.7 Low Temperature 4

MIL-STD-810G-2008 Environmental Engineering Considerations and Laboratory Tests - MIL-STD-810G-2008 Method 502.5 Low Temperature 4

GB/T 18488-2024 5.4.1,6.5.1 Drive Motor Systems for Electric Vehicles

GB/T 25119-2021 12.2.4 Railway Applications - Electronic Equipment for Rolling Stock - Low-Temperature Testing

GB/T 25119-2021 12.2.15 Railway Applications - Electronic Equipment for Rolling Stock - Low-Temperature Storage Testing

GJB 74A-1998 3.13.4 General Specification for Ground Radar

GJB 2339A-2006 3.5.3,3.5.4 General Specification for Ejection Cartridges

GB/T 28046.4-2011 5.1.1 Road Vehicles - Environmental Conditions and Testing for Electrical and Electronic Equipment - Part 4: Climatic Vehicles

GJB1621.7A-2006 5.2 General Technical Requirements for Technical Reconnaissance Equipment - Part 7: Environmental Adaptability Requirements and Test Methods

GJB 2225A-2008 4.7.5.3 General Specification for Ground Electronic Countermeasure Equipment

GJB 1392A-2007 4.5.17.2 General Specification for Aircraft 400Hz AC Generation Systems

YD/T 2379.2-2022 5.1 Environmental Test Requirements and Methods for Telecommunication Equipment - Part 2: Equipment Fixed in Weather-Protected Locations