Product: Copper Liquid Cold Plate
Customer Location: Italy
Industry: Server / Data Center Equipment
Application: CPU/GPU Liquid Cooling System
Material: C11000 Pure Copper
Manufacturing Process: Precision CNC Machining + Copper Tube Embedded Cooling Structure + Surface Finishing + Reliability Testing
Project Overview
A European data center equipment manufacturer required a high-performance copper liquid cold plate for CPU/GPU cooling applications.
The customer was facing thermal performance issues caused by insufficient contact surface flatness from the previous supplier. The uneven interface increased thermal resistance between the heat source and cooling plate, reducing cooling efficiency under high-load operation.
JINDU Tech developed a customized high precision copper liquid cold plate solution with optimized machining processes, cooling structure design, and strict quality inspection to improve thermal transfer performance and long-term reliability.
Customer Challenge: Thermal Performance Loss Caused by Poor Flatness
The customer’s previous supplier could not maintain sufficient flatness on the copper cold plate contact surface.
The flatness deviation created uneven contact between the CPU/GPU and cold plate, increasing the thickness of thermal interface material (TIM) and reducing heat transfer efficiency.
Main issues included:
• Increased thermal contact resistance.
• Higher CPU/GPU operating temperature.
• Uneven temperature distribution.
• Local hotspot problems.
The customer required a supplier capable of producing copper liquid cold plates with high precision surface control and stable thermal performance.
Customer Requirements
• Material: C11000 Pure Copper
• Product size: 245mm × 170mm × 25mm
• Cooling structure: Copper tube embedded liquid cooling structure
• Cooling power: Approximately 350W
• Contact surface flatness: ≤0.05mm
• Surface roughness: Ra≤0.8μm
• Leakage test requirement: 8Bar pressure holding test
• Prototype quantity: 30 pcs
• Expected annual demand: 2000-3000 pcs
JINDU Engineering Solution
1. Copper Material Stress Control
Copper materials may deform during precision machining because of internal stress.
JINDU optimized the manufacturing process by controlling material stress and machining sequence to reduce deformation risk and improve final dimensional stability.
2. Precision CNC Machining for Flatness Control
JINDU applied precision CNC machining processes to achieve accurate contact surface control.
The optimized machining process improved:
• Surface flatness.
• Surface roughness.
• Contact accuracy between the cooling plate and heat source.
This helped reduce thermal resistance and improve overall cooling efficiency.
3. Optimized Copper Tube Embedded Cooling Structure
The copper tube embedded cooling structure provides excellent thermal conductivity and reliable coolant circulation.
Compared with conventional cooling solutions, this structure offers a balance between thermal performance, manufacturing efficiency, and cost control.
4. Strict Quality Inspection and Validation
Before delivery, each liquid cold plate was inspected through:
✓ Flatness inspection
✓ Surface roughness measurement
✓ Dimensional inspection
✓ Air tightness testing
✓ Pressure testing
✓ Thermal performance validation
Testing Results
After process optimization, the copper liquid cold plate achieved:
• Contact surface flatness ≤0.04mm.
• Surface roughness Ra≤0.6μm.
• Passed 8Bar leakage testing.
• Improved CPU/GPU cooling performance.
• Reduced temperature difference and improved thermal uniformity.
Final Result
The customer successfully completed validation testing and transferred the project into production.
Through precision manufacturing and cooling structure optimization, JINDU Tech provided a reliable copper liquid cold plate solution for advanced CPU/GPU cooling applications.
The project demonstrated JINDU’s capability in customized liquid cooling development, precision machining, and prototype-to-mass-production support.
Why Choose JINDU Tech
JINDU Tech provides customized liquid cooling solutions including:
• Copper and aluminum liquid cold plate manufacturing.
• Precision CNC machining capability.
• Cooling structure optimization.
• Leakage and thermal validation.
• Prototype development and mass production support.
Suggested Internal Link Placement
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