As AI computing, high-performance servers, and data centers continue to push power density limits, efficient and reliable thermal management has become mission-critical. Liquid Cold Plates are widely adopted as a core solution for direct heat removal from high-power chips, enabling stable operation, higher energy efficiency, and longer system lifespan.
KINGKA provides custom Liquid Cooling Cold Plates and Water Cooling Plates designed for data center and AI server applications, manufactured using Friction Stir Welding (FSW) technology to ensure superior sealing performance, structural strength, and long-term reliability.
A Liquid Cold Plate is a heat transfer component that removes heat from high-power electronic devices by circulating coolant through internal flow channels. Compared with traditional air cooling, Cold Plate Cooling offers:
Higher heat transfer efficiency
Lower thermal resistance
Better temperature uniformity
Support for high-density server deployment
Liquid Cold Plates are widely used in data centers, AI servers, GPUs, CPUs, power electronics, and HPC systems.
KINGKA’s Liquid Cold Plate with Friction Stir Welding adopts a solid-state welding process that joins the cold plate base and cover without melting filler materials.
Leak-proof structure with excellent long-term sealing reliability
No brazing filler metals, reducing corrosion risk
High mechanical strength and fatigue resistance
Uniform microstructure and stable thermal performance
Suitable for high-pressure and long-life data center liquid cooling systems
This makes the FSW Water Cooling Cold Plate an ideal solution for mission-critical data center applications.
To ensure consistent quality and performance, every Liquid Cold Plate follows a strict and standardized manufacturing process:
Aluminum or copper plate incoming inspection
Environmental compliance testing
Plate pre-processing (cutting, milling, flattening)
Ultrasonic cleaning
CNC Machining of flow channels, ports, and mounting surfaces
Flatness inspection
Optional surface treatment (anodizing, sandblasting, etc.)
Ultrasonic cleaning
CNC machining with channel matching
Flatness inspection
Surface treatment
Ultrasonic cleaning
Assembly of dedicated FSW fixtures
Accurate alignment and clamping of base plate and cover plate
Pre-weld cleaning
Weld seam area inspection
Welding parameter setup
Automated welding with seam tracking
Initial visual inspection after welding
Gas / Liquid Leakage Test
Pressure Holding Test (air or water)
Surface finishing (grinding / polishing)
Internal flushing and drainage
Nitrogen purging
Oven drying
Fastener and bracket assembly
Pipe fitting installation
Sealing re-inspection
100% visual inspection
Thermal resistance testing
Flow resistance testing
High-pressure leakage re-test (100% inspection)
Cleanliness confirmation
Anti-corrosion and anti-scratch protection
Custom packaging and labeling
Warehouse storage
Customizable flow channel design for optimal cooling performance
High-precision CNC machining for tight tolerances
FSW technology for long-term leak resistance
Compatible with water and other liquid cooling media
Designed for medium- and high-power data center cooling
Suitable for mass production and OEM integration
Data center servers and racks
AI and HPC systems
GPU and CPU direct-to-chip cooling
Power electronics and inverter systems
Renewable energy and energy storage equipment
| Category | Item | Specification |
|---|---|---|
| General | Product Name | Liquid Cold Plate / Liquid Cooling Cold Plate |
| Cooling Method | Cold Plate Cooling | |
| Application | Data Center, AI Server, HPC, High Power Electronics | |
| Welding Technology | Friction Stir Welding (FSW) | |
| Manufacturing Process | CNC Machining + FSW Welding | |
| Cooling Medium | Deionized Water / Water-Glycol | |
| Material Options | Aluminum 6061 / 6063 / 3003 (Copper Optional) | |
| Dimensions | Length | 100 – 800 mm (Customizable) |
| Width | 80 – 600 mm (Customizable) | |
| Thickness | 6 – 30 mm | |
| Flatness | ≤ 0.05 mm | |
| Surface Roughness | Ra ≤ 0.8 μm | |
| Flow Channel | Channel Type | Serpentine / Parallel / Pin-fin |
| Channel Width | 1.5 – 5.0 mm | |
| Channel Depth | 1.5 – 4.0 mm | |
| Cooling Performance | Flow Rate | 0.5 – 6.0 L/min |
| Heat Dissipation | 500 – 3000 W (Design Dependent) | |
| Thermal Resistance | ≤ 0.15 °C/W | |
| Pressure Drop | ≤ 50 kPa @ rated flow | |
| Operating Temperature | 5 – 60 °C (Coolant) | |
| Pressure & Leakage | Leakage Test | Gas / Liquid Leakage Test |
| Pressure Holding Test | Yes | |
| Test Pressure | 1.0 – 3.0 MPa | |
| Holding Time | ≥ 30 minutes | |
| Leakage Rate | ≤ 1 × 10⁻⁶ mbar·L/s | |
| Operating Pressure | ≤ 1.5 MPa | |
| Connections | Port Type | G1/4, G3/8, NPT (Optional) |
| Connector Type | Threaded / Quick Connect | |
| Port Position | Side / Top / Bottom (Customizable) | |
| Surface Treatment | Options | Anodizing / Sandblasting / Chemical Conversion |
| Quality Control | Inspection | 100% Leakage & Pressure Test |
| Performance Test | Flow Resistance & Thermal Validation |
Liquid Cold Plates remove heat directly from the heat source using liquid coolant, offering much higher efficiency and better temperature control than air cooling, especially for high-power devices.
FSW eliminates brazing filler materials and significantly improves sealing reliability, making it ideal for data center liquid cooling systems that require long-term, leak-free operation.
Yes. KINGKA’s Liquid Cold Plates with Friction Stir Welding undergo gas/liquid leakage testing and pressure holding tests to ensure safe operation under high pressure.
Absolutely. Flow channel design, material selection, surface treatment, ports, and dimensions can all be customized based on your cooling and integration requirements.
Our Water Cooling Plates are compatible with deionized water and other customer-specified cooling liquids, depending on application requirements.
As a professional manufacturer, KINGKA provides one-stop solutions from thermal design and precision machining to FSW welding, testing, and global delivery. Whether you need a prototype or mass production, our Liquid Cold Plate for Data Center cooling is engineered to meet the highest standards of performance and reliability.
Contact us today to discuss your liquid cooling project.
Kingka Tech Industrial Limited
We specialize in precision CNC machining and our products are widely used in telecommunication industry, aerospace, automotive, industrial control, power electronics, medical instruments, security electronics, LED lighting and multimedia consumption.
Address:
Da Long New Village, Xie Gang Town, Dongguan City, Guangdong Province, China 523598
Email:
Tel:
+86 137 1244 4018
