FSW welding in data center

WHERE FSW TECHNOLOGY MAKES A DIFFERENCE

Friction Stir Welding in Data Center

Enable high-performance cooling and power distribution with leak-tight cold plates and reliable busbars for data centers.

Powering the Next Generation of AI Data Centers with FSW

The rapid expansion of AI data centers and high-density servers is driving unprecedented demand for efficient thermal management and reliable power distribution. Technologies such as direct-to-chip cooling (D2C), cold plates and advanced busbar systems are becoming essential to support increasing GPU and CPU performance.

In this context, Friction Stir Welding (FSW) offers a breakthrough solution for manufacturing critical components in copper and aluminum. As a solid-state joining process, FSW enables defect-free, leak-tight and highly conductive assemblies, while supporting fast industrial ramp-up and cost-efficient production. From cold plates and stiffened liquid cooling panels to high-performance busbars, FSW helps manufacturers improve reliability, accelerate time-to-market and replace traditional joining methods such as brazing and screwing.

Navigating Data Center Manufacturing Challenges with FSW Technology

AI data centers manufacturing

The rapid growth of AI infrastructure requires manufacturers to scale cold plate and busbar production quickly, while maintaining consistent quality and performance.

  • FSW solution: Short takt time and welding cycles (≈10 seconds per weld) enable high-throughput production and support aggressive industrial ramp-ups without complex batch processes.
copper liquid cold plate

Brazing of copper cold plates and busbars involves long cycle times, high scrap rates and complex infrastructure (ovens, fixtures).

  • FSW solution: A flux-free and filler-free process that eliminates porosity risks, reduces scrap to near zero and avoids heavy CapEx investments in brazing lines.

Want to learn more?

Discover how FSW compares to vacuum brazing and laser welding for copper cold plates in our article: “Copper cold plates: which joining process to prioritize among FSW, vacuum brazing and laser?

friction stir weld on copper and aluminum

Screw-and-gasket (O-ring) sealed blocks and screwed assemblies are widely used in data center cooling and power systems, but they introduce limitations in sealing reliability, thermal performance and assembly cost.

  • FSW solution: Delivers higher leak-tightness at operating pressure and improved long-term sealing, while ensuring clean joints for direct-to-chip (D2C) applications, better heat transfer and simplified production with fewer manual steps.
automated fsw assembly
automated fsw welding

Data center suppliers face strong pressure to validate designs quickly and move from prototype to production in minimal time.

  • FSW solution: Simple integration on existing CNC machines allows fast deployment, reducing development cycles and enabling in-house joining capabilities.
liquid cooling panel

Cold plates and liquid cooling panels must withstand high internal pressures and guarantee long-term sealing performance.

  • FSW solution: Leak-tight copper joints validated up to ~200 bar (≈ 2,900 psi), ensuring high-pressure resistance (≥10 bar / 150 psi), fully testable welds and zero leakage risk over time.
data centre with a direct connection to the chip

High-density servers require optimal heat transfer and electrical conductivity, especially in direct-to-chip (D2C) cooling and power distribution systems.

  • FSW solution: Perfect metallurgical continuity ensures thermal efficiency in cold plates and electrical conductivity equivalent to base material in copper busbars.

Exploring FSW Applications in the Data Center Sector

In the fast-growing data center sector, ensuring efficient thermal management, reliable power distribution and scalable manufacturing is essential. Friction Stir Welding addresses these challenges by enabling the production of high-performance cooling and electrical components for next-generation data centers.

Friction Stir Welding in the data center sector
Cold plates

Cold plates

Produce high-performance cold plates for direct-to-chip cooling in AI data centers. FSW ensures leak-tightness, protects copper microchannels and enables fast, repeatable production at scale.

Battery trays

Battery trays

Produce lightweight and rigid battery trays for backup power systems in data centers. FSW ensures high mechanical resistance and defect-free joints adapted to demanding operational environments.

Bus bars

Bus bars

Ensure reliable power distribution in high-density data centers with FSW busbars. Achieve base material conductivity, eliminate brazing defects and avoid loosening issues from screwed assemblies.

Stiffened panels

Stiffened panels

Manufacture large, leak-tight cooling panels for data centers using FSW. Enable efficient liquid cooling at rack level with high structural integrity and scalable production for AI infrastructure.

coil joining

Coil joining

Achieve defect-free coil joining for thermal management systems in data centers. FSW improves metallurgical continuity and reliability while simplifying production compared to traditional processes.

Heat sinks

Die casting

Optimize die-cast components for data center infrastructure with FSW. Reduce assembly costs and eliminate leakage risks while ensuring robust, defect-free joints for scalable and reliable production.

Recommended FSW Equipment for Data Center Applications

Our FSW equipment supports the production of high-performance cooling and power distribution components for data centers. Discover the solutions our experts recommend to scale cold plate and busbar manufacturing efficiently.

friction stir welding machine

Standard FSW head for CNC

This FSW head integrates easily with existing 3-, 4- or 5-axis CNC machines, enabling fast deployment for cold plate and busbar production. This Friction Stir Welding equipment ensures precise force control, repeatable weld quality and high productivity for scalable manufacturing.

friction stir welding equipment

Smart FSW head for CNC

Designed for advanced process control, this smart FSW head enables precise and repeatable welding of copper and aluminum components such as cold plates and busbars. It integrates easily on CNC machines, ensuring consistent quality and optimized production performance.

Dive Deeper: Comprehensive FSW Data Center Applications Resources

Want to explore FSW Data Center Applications further? We’ve gathered a set of valuable resources tailored for you, featuring engaging webinars, informative articles, and comprehensive whitepapers. Dive in below to tap into the knowledge we’ve curated specially for you.

Webinar – 45 min – Replay on demand

FSW Basics: Unlocking the power of Friction Stir Welding

Discover how Friction Stir Welding works and why it is a key technology for data center applications. Learn how FSW improves reliability, performance and scalability in cold plate and busbar manufacturing.

Blog articles – 5 min

Thermal performance: why FSW is a game-changer in the industry

Copper-Aluminium Welding: how to overcome industrial barriers?

White paper – 20 min

Overcoming cold plate manufacturing challenges

Learn how FSW transforms the production of copper cold plates for high-density data centers, improving leak-tightness, reducing defects and enabling scalable, high-performance manufacturing.

overcoming cold plate manufacturing challenges

White paper – 20 min

Unlocking high performance Cu/Al bus bars

Discover how FSW improves Cu/Al bus bar performance by enhancing conductivity, reliability and cost efficiency.
A solid-state process enabling durable, defect-free joints with reduced copper dependency.

thermal management - FSW liquid cold plate

Scale Your Data Center Manufacturing with FSW

Unlock faster production, leak-tight performance and reliable copper joining for cold plates and busbars. Replace complex processes and accelerate your transition to scalable, high-performance manufacturing.