SAIC

When test samples are exposed to low temperatures in a thermal shock test chamber, they may suffer certain adverse effects. This is because the physical properties of the materials can change under extreme cold, potentially leading to performance degradation. So, what specific impacts can occur?

In the workshops of some enterprises, we often see a brand-new constant temperature and humidity test chamber that, after a short period of use, becomes covered in oil stains and dust.

Temperature is the most fundamental—and most brutal—physical parameter influencing the reliability of materials, components and complete systems. GB/T 2423.1, GB/T 2423.2, GJB 150.3A, GJB 150.4A, DO-160 Section 4/5, IEC 60068-2-1/-2 and MIL-STD-810H all quantify requirements for temperature slew rate, dwell time, heat load and measurement uncertainty.

A rain test chamber (also known as a waterproof testing device or box-type rain testing system) is a core tool for testing the sealability of electronic and electrical product, home appliance, and lighting equipment enclosures. It verifies the functional reliability of products in humid environments by simulating natural rainfall, water seepage, splashing, and other environmental conditions.

Conducting salt spray tests in natural environments through exposure is not only time-consuming but also yields results that are often inconsistent and difficult to control.