Safety tests

Test Background

Liquid-cooling plates are in direct contact with high-value chips such as CPUs/GPUs. Once a leak occurs, the entire server board will be damaged. Safety tests are the key verification to ensure that liquid-cooling plates do not leak or burst under high pressure and long-term operation.

Test Introduction

Safety tests of liquid-cooling plates cover hydrostatic pressure resistance test, burst test, mass spectrometry leak detection test and insulation test, comprehensively verifying the structural integrity and sealing reliability of liquid-cooling plates under extreme working conditions.

Testing Objectives

Verify the structural strength of the liquid-cooling plate under 1.5 to 3 times the working pressure

Determine the burst pressure limit and failure mode

Detect micron-level leakage defects

Ensure that the insulation performance meets the electrical safety requirements

Test Standards

T/CESA 1249.1-2023 Cold plate technical specification

GB/T 15428-1995 Design guide for cold plates used in electronic equipment

ASTM E493 Helium mass spectrometry leak detection standard

Applicable Products/Fields

Suitable for AI server GPU cold plates, CPU cold plates, high-power module liquid-cooled plates, etc.

Test Content

Hydrostatic pressure test: Maintain the pressure at 1.5 times the working pressure for 30 minutes

Burst pressure test: Increase the pressure at a uniform speed until rupture and record the burst value

Helium mass spectrometry leak detection: Detect the leakage rate by the vacuum box method

Insulation resistance test: The insulation between the coolant and the casing is ≥100 MΩ

Project Advantages

High-precision helium leak detection equipment, capable of detecting leaks at the 10⁻⁶ Pa·m³/s level

Burst testing equipped with high-speed camera to record the failure process

Complies with both OCP and national standard requirements

Laboratory Configuration

Hydrostatic test bench (0-10 MPa)

Burst test system (automatically records the pressure curve)

Helium mass spectrometer leak detector (vacuum box method)

Insulation resistance tester

FAQ
Q: What burst pressure should the liquid-cooled plate reach? A: Usually, it is required to be ≥3 times the rated working pressure to ensure that no bursting occurs under abnormal pressure.