Low-Temperature Testing - Project Introduction

The purpose of low-temperature testing is to verify whether the specimens can be stored and manipulated in a long-term low-temperature environment, determining the adaptability and durability of military and civilian equipment for storage and operation under low-temperature conditions. It assesses the physical and chemical properties of materials under low temperatures. The standard specifies requirements for pre-treatment, initial detection, sample installation, intermediate inspections, post-treatment, heating rates, temperature cabinet loading conditions, and the volume ratio of the test item to the temperature cabinet, among others.

Failure modes of specimens under low-temperature conditions: Parts and materials used in the product may experience cracking, embrittlement, jamming of moving parts, and changes in properties at low temperatures.

Impact of Low Temperatures

1. Makes materials harden and脆en.

2. Increased lubricant viscosity leads to reduced flowability and diminished lubricating action.

3. Changes in electronic component performance

4. Water-cooled condensation ice.

Seal failure

6. Material shrinkage leads to changes in mechanical structure.

Application Scope

Low-temperature testing is primarily used for scientific research, the preservation of medical supplies, biological products, marine products, electronic components, chemical materials, and other special materials' low-temperature experiments and storage.

Method Standards

GB/T 2423.1-2008 "Environmental Testing of Electrical and Electronic Products - Part 2: Test Methods - Test A: Low Temperature"

IEC 60068-2-1:2007 "Environmental Testing of Electrical and Electronic Equipment – Part 2: Test Methods – Test A: Low Temperature"