FSW Liquid Cold Plate Parts

FSW Liquid Cold Plate Parts, also known as Friction Stir Welded Liquid Cold Plates, are high-performance thermal management components designed for efficient heat removal in high-power electronic systems.

These cold plates combine precision CNC machining with Friction Stir Welding (FSW) to create sealed internal coolant channels. Because FSW is a solid-state welding process, the base material is joined without melting, helping reduce thermal distortion while providing strong joints, reliable sealing, and stable mechanical performance.

FSW Liquid Cold Plates are widely used in EV battery cooling, data center liquid cooling, IGBT cooling, energy storage systems, power electronics, inverters, industrial lasers, and high-performance computing systems.

How FSW Liquid Cold Plate Parts Work

An FSW liquid cold plate transfers heat from electronic components into circulating coolant.

Heat generated by batteries, CPUs, GPUs, IGBT modules, MOSFETs, power modules, or other heat sources is conducted into the cold plate base. The coolant then flows through internal channels and carries the heat away from the system.

A typical manufacturing process includes:

1. CNC machining of internal flow channels

2. Positioning the cover plate

3. Friction Stir Welding along the joint line

4. CNC finishing and surface machining

5. Surface treatment

6. Pressure and leak testing

The FSW process uses a rotating tool to generate frictional heat and mechanically stir the softened material together. This forms a dense, continuous weld without fully melting the aluminum.

Product Specifications

Actual specifications can be adjusted according to thermal load, operating pressure, coolant flow rate, installation space, and application requirements.

Key Features of FSW Liquid Cold Plate Parts

High Thermal Efficiency

Optimized internal flow channels help increase coolant contact area and improve heat transfer efficiency.

The design can be adjusted according to:

• Heat load

• Heat flux

• Coolant flow rate

• Pressure drop

• Heat source position

• Surface temperature requirements

This makes the liquid cooling plate suitable for high-power and high-heat-density applications.

Reliable Leak-Proof Structure

One of the key advantages of Friction Stir Welding is its ability to create strong, continuous joints with low porosity.

For liquid cooling applications, this helps improve sealing reliability and reduce leakage risk.

Low Thermal Distortion

Because FSW does not fully melt the base material, heat input is lower than many conventional fusion welding processes.

This helps maintain cold plate flatness, channel geometry, and dimensional accuracy.

High Mechanical Strength

The solid-state joining process provides strong weld integrity and good pressure resistance.

This is important for liquid cooling systems operating under continuous pressure, vibration, or long service cycles.

Lightweight Aluminum Construction

An aluminum liquid cold plate provides a good balance between thermal conductivity, weight, machinability, and cost.

Aluminum 6061 and 6063 are commonly used for industrial thermal management applications.

Internal Flow Channel Options

The performance of a custom cold plate depends heavily on internal channel design.

Available structures can include:

• Serpentine channels

• Parallel flow channels

• Multi-channel layouts

• Localized cooling channels

• Customized CNC-machined flow paths

A well-designed channel structure helps improve coolant distribution while controlling pressure drop and avoiding flow dead zones.

For demanding applications, CFD analysis can be used to optimize fluid flow and thermal performance before manufacturing.

Applications of FSW Liquid Cold Plates

EV Battery Cooling

An EV battery cooling plate helps control cell temperature, reduce temperature differences across the battery pack, and support stable charging and discharging performance.

Data Center Liquid Cooling

FSW cold plates can be used in direct liquid cooling systems for:

• CPUs

• GPUs

• AI servers

• HPC systems

• Server power electronics

As computing power density increases, data center liquid cooling has become an important thermal management solution.

IGBT and Power Electronics

An IGBT cooling plate can provide direct liquid cooling for:

• IGBT modules

• MOSFETs

• Inverters

• Converters

• Rectifiers

• Power supplies

Liquid cooling helps control junction temperature and improve long-term component reliability.

Energy Storage Systems

Battery energy storage systems require stable thermal control during charge and discharge cycles.

FSW liquid cold plates can be integrated into ESS battery modules to improve temperature uniformity.

Industrial Equipment

Other applications include:

• Industrial lasers

• Medical equipment

• Semiconductor systems

• Automation equipment

• Renewable energy systems

• High-power electronic devices

FSW Liquid Cold Plate vs Brazed Cold Plate

FSW is especially suitable for aluminum cold plates where joint strength, sealing reliability, and dimensional stability are important.

Custom FSW Liquid Cold Plate Manufacturing

As a custom FSW liquid cold plate manufacturer, the product can be engineered according to the complete cooling system rather than only the plate dimensions.

Customization options include:

• Plate length, width, and thickness

• Aluminum alloy

• Internal channel geometry

• Channel width and depth

• Inlet and outlet position

• Port type

• Mounting holes

• Surface flatness

• Surface treatment

• Operating pressure

• Coolant type

• OEM branding

Engineering support can also include:

• CFD simulation

• Thermal analysis

• Prototype manufacturing

• Flow testing

• Pressure testing

• Leak testing

• Dimensional inspection

Why Choose FSW Liquid Cold Plate Parts?

FSW Liquid Cold Plate Parts provide a reliable combination of:

• High cooling efficiency

• Low thermal resistance

• Strong weld integrity

• Reliable sealing performance

• Good pressure resistance

• Lightweight aluminum construction

• Flexible flow channel design

• Precision CNC machining

• OEM and ODM customization

They are suitable for customers requiring efficient and reliable thermal management in EVs, data centers, energy storage systems, IGBT modules, inverters, industrial equipment, and high-performance electronics.

For projects requiring customized dimensions, internal channels, mounting structures, port locations, or thermal performance, an FSW liquid cold plate can be developed according to specific system requirements.