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Your Trusted Manufacturer of Precision FSW Liquid Cold Plates

As an IATF 16949 certified direct manufacturer with 16+ years of expertise, KingKa manages the entire FSW production lifecycle in-house. We leverage 50+ high-speed CNC centers to precision-mill complex micro-channels, hermetically sealed via solid-state Friction Stir Welding. This flux-free process inherently eliminates porosity and thermal distortion, guaranteeing a monolithic, zero-leakage structure with exceptional burst pressure.

Why Choose FSW Liquid Cold Plate?

When traditional brazing or tube-embedding falls short in extreme high-power density applications, Friction Stir Welding (FSW) offers the ultimate leak-proof solution. As an IATF 16949 certified direct manufacturer with 16+ years of expertise, KingKa pairs aerospace-grade solid-state welding technology with our fleet of 50+ high-speed CNC centers. This in-house capability allows us to mill intricate internal micro-channels to stringent ±0.005mm tolerances before forging the metals into a monolithic, zero-porosity cooling module. The result is unparalleled structural integrity that completely eliminates thermal distortion and flux contamination.

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Our End-to-End FSW Manufacturing Process

From thermal simulation to solid-state welding and final validation, KingKa maintains absolute in-house control over every production stage to ensure zero-defect delivery.

Thermal Design & DFM

Engineers leverage 3D Pro/E and advanced CFD simulations to optimize internal micro-channels. A comprehensive DFM (Design for Manufacturability) review is conducted to ensure the design aligns perfectly with FSW mechanical constraints.

Precision CNC Milling

Utilizing our fleet of 50+ high-speed CNC centers (including Brother and Taikan), we precision-mill the complex flow channels and base plates to stringent tolerances as tight as ±0.005mm, preparing flawless surfaces for welding.

Friction Stir Welding (FSW)

The core solid-state joining process. Using dedicated aerospace-grade FSW equipment, a rotating tool mechanically forges the cover to the base plate below the melting point. This flux-free process completely eliminates porosity, hot cracking, and thermal distortion.

Surface Fly-Cutting & Finishing

Post-welding, the cold plate undergoes precision fly-cutting on our CNC machines to remove welding flash and achieve an ultra-flat surface finish, which is critical for minimizing thermal interface resistance when mounting IGBTs or EV battery modules.

100% Leak & Pressure Validation

Every single FSW unit enters our in-house testing lab. We conduct 100% airtightness leak detection, hydrostatic pressure testing, and dynamic flow resistance measurements to guarantee absolute reliability under extreme operational stress.

CMM Inspection & QA

Governed by IATF 16949 and ISO 9001 standards, final dimensional verification is executed using Hexagon CMMs (accurate to ±0.001mm). The validated parts undergo specialized airtight cleaning and surface treatments before secure global packaging.

Explore Our FSW Liquid Cold Plate

Every Kingka cold plate is engineered to meet unique thermal requirements with precision and consistency.

FSW Liquid Cold Plate Technical Specifications

Built to rigorous automotive and industrial standards. Explore our comprehensive manufacturing capabilities and quality validation metrics for custom FSW liquid cooling modules.
  • Mechanical & Material Specifications
     
    Joining Technology Solid-State Friction Stir Welding (FSW)
    100% Flux-free process
    Monolithic, zero-porosity hermetic bond
    Compatible Materials Aluminum Alloys: 6061, 6063, 5052, 5083, 7075
    Copper Alloys: Copper 1100
    Dissimilar Metals: Cu-to-Al FSW integration
    CNC Machining Fleet 50+ High-speed CNC centers
    3-Axis, 4-Axis, and 5-Axis configurations
    Japanese Brother & Taiwanese Taikan machines
    Machining Tolerances CNC Milling: Down to ±0.005 mm
    CNC Turning: Down to ±0.005 mm
    Skiving Fin: Down to ±0.05 mm
    Channel Architecture High-density internal micro-channels
    CNC-milled pin fins and turbulators
    CFD-optimized flow path routing
    Surface Flatness & Finish High-precision post-FSW fly-cutting
    Tailored Ra/Rz surface roughness
    Engineered for minimum thermal interface resistance
    Engineering & Turnaround 24-Hour DFM & thermal feasibility review
    Rapid physical prototype dispatch
    Annual capacity exceeding 60,000 units
  • Testing, Quality & Surface Finish
     
    Dimensional Inspection Hexagon Coordinate Measuring Machines (±0.001 mm)
    Hexagon 2.5D Optical Projectors (±0.001 mm)
    Kett Film Thickness & Roughness Testers
    Leak & Pressure Testing 100% Helium & Airtightness leak detection
    Hydrostatic burst pressure testing
    Multi-stage pressure decay verification
    Fluid & Flow Validation Two-stage dynamic flow resistance testing
    Thermal cycling performance validation
    In-house thermal testing laboratory
    Internal Cleanliness Industrial airtight cleaning machines
    100% Particulate & residue-free guarantee
    Zero chemical flux contamination
    Coolant Compatibility Deionized (DI) Water
    Ethylene / Propylene Glycol Mixtures (EGW/PGW)
    Dielectric Fluids & Synthetic Coolants
    Surface Treatments Anodizing (Clear, Black, Custom Colors)
    Chemical Conversion Coating (SurTec 650 / Alodine)
    Electroless Nickel Plating & Passivation
    Precision Sandblasting & Polishing
     

Mission-Critical Applications For FSW Liquid Cold Plates

Engineered for extreme sectors where zero-leakage, high burst pressure, and uncompromising structural rigidity are absolute prerequisites:
02

Automotive

Delivering high burst-pressure FSW cold plates to manage extreme heat flux in EV powertrains, ensuring absolute vehicle safety under strict IATF 16949 standards.
03

Data Centers

Solving space-constrained thermal bottlenecks with bespoke micro-channel FSW designs to efficiently cool high-wattage CPUs, GPUs, and network switches.
 
04

Renewable Energy

Providing highly durable, solid-state liquid cooling modules capable of handling massive power loads for renewable energy converters in harsh, continuous-duty environments.
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Aerospace and Defense

Utilizing aerospace-grade FSW equipment to forge monolithic, ultra-lightweight cooling structures that withstand severe vibrations, extreme pressure gradients, and thermal shocks.
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Medical

Manufacturing ultra-stable, zero-leakage cooling modules for mission-critical CT scanners and MRI equipment, adhering to rigorous quality protocols (ISO 13485 upcoming).
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Industrial and Power Electronics

Flux-free solid-state welding eliminates internal galvanic corrosion risks, ensuring decades of reliable thermal management for complex industrial drives and power grids.

Why Partner With KingkaTech?

Align with a manufacturer that possesses true in-house FSW capabilities. We synthesize 16+ years of thermal engineering with state-of-the-art solid-state welding to safeguard your high-value electronic assets.
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In-House CNC & FSW Capabilities

Consolidate your manufacturing. From raw aluminum/copper blocks to precision internal flow channel milling via our 50+ CNC centers, followed by seamless FSW joining and final surface finishing, we control the entire proprietary workflow in-house.
 
 
02

Advanced Flow Channel Engineering

Our R&D engineers utilize advanced CFD (Computational Fluid Dynamics) to design highly complex internal fin structures and micro-channels. FSW allows us to securely seal these intricate geometries without the flow-restricting flux used in brazing.
 
01

Zero-Porosity & Leak-Free Guarantee

Because FSW is a solid-state process that melts no metal, it inherently prevents porosity and cracking. We validate every single FSW plate in our laboratory through 100% airtightness, hydrostatic pressure, and flow resistance testing.
 
 
04

Accelerated Prototyping & DFM

Submit your thermal requirements and CAD files to receive a comprehensive DFM (Design for Manufacturability) assessment within 24 hours, rapidly transitioning your high-power cooling concepts into validated physical prototypes.
 
05

High-Yield FSW Mass Production

Equipped with dedicated aerospace-grade Friction Stir Welding machines and automated CNC lines, our ISO 9001 facility ensures stable, high-volume production scalability with an annual capacity exceeding 60,000 units.
 
06

Automotive & Medical-Grade Compliance

Managing the extreme heat of NEV battery packs and medical imaging devices requires uncompromising standards. We manufacture all FSW components in strict adherence to IATF 16949 automotive quality management protocols.
 

Quality Assurance and Certification

At Kingka Tech, our unwavering commitment to quality and precision is fundamental to our success. We adhere to the highest international machining standards to ensure that every CNC-machined component we deliver not only meets but exceeds your most stringent requirements.

From Blueprint to Mass Production: Your Frictionless Journey

We eliminate engineering bottlenecks. Discover how our streamlined, transparent process turns your complex thermal challenges into validated physical realities.

Free DFM Review & Rapid Quote

Submit your 2D/3D CAD models (.STP, .IGS) and thermal parameters. Within 24 hours, our engineering team provides a free manufacturability assessment, thermal optimization suggestions (CFD), and a transparent quotation to kickstart your project.

Precision Machining & FSW Assembly

Upon approval, we deploy our 50+ high-speed CNC machines for precise channel routing. The assembly is then hermetically sealed using our solid-state Friction Stir Welding (FSW) technology, ensuring absolute structural integrity.

100% Lab Testing & Global Delivery

No part leaves our ISO 9001/IATF 16949 facility without passing rigorous leak detection and pressure tests. Your validated cooling modules are securely packaged and dispatched via our reliable global logistics network.

FSW Liquid Cold Plate FAQ

  • Q What is a Friction Stir Welded (FSW) Liquid Cold Plate and why is it superior for high-power electronics?

    A Unlike traditional brazing or soldering, Friction Stir Welding (FSW) is a solid-state joining process. A rapidly rotating tool mechanically forges the cover plate to the base metal below its melting point. This eliminates phase changes, porosity, and thermal distortion. The result is a monolithic liquid cold plate with exceptional structural rigidity, vastly superior burst pressure ratings, and an absolute hermetic seal—critical for high-power density applications like EV inverters and IGBTs.

  • Q Why should I choose FSW cold plates over traditional brazed or tube-embedded solutions?

    A FSW unlocks unparalleled design freedom for internal geometries. While tube-embedded cold plates are limited by the bending radius of the tubes, FSW allows KingKa to CNC-machine highly intricate micro-channels, internal fins, and turbulators directly into the base plate to precisely target extreme hot spots. Furthermore, because FSW requires no flux or filler metal, there is zero risk of internal channel blockage or galvanic corrosion caused by dissimilar joining materials.

  • Q How does KingKa validate the pressure rating and zero-leakage performance of FSW cold plates?

    A The metallurgical bond created by our in-house FSW equipment naturally prevents leaks. However, we leave nothing to chance. Operating under ISO 9001 and IATF 16949 standards, KingKa’s testing laboratory subjects every single FSW cold plate to a rigorous battery of tests, including 100% helium/airtightness leak detection, hydrostatic pressure testing, and dynamic flow resistance measurement, ensuring they exceed the strictest automotive and aerospace safety thresholds.

  • Q What materials can KingKa process using Friction Stir Welding?

    A FSW is exceptionally well-suited for high-thermal-conductivity aluminum alloys. KingKa expertly processes common grades such as Aluminum 6061, 6063, and 5052. Additionally, our advanced FSW capabilities allow for joining dissimilar metals in specific configurations, such as welding a copper contact plate directly into an aluminum base, combining copper’s elite thermal absorption with aluminum’s lightweight and cost-effective properties.

  • Q What are the typical lead times for custom FSW prototypes and mass production?

    A Because we control the entire process in-house—from the initial CNC machining of the flow channels across our 50+ CNC centers to the final FSW joining—our lead times are highly compressed. Upon finalizing your DFM review, custom FSW prototypes can typically be expedited within a matter of weeks. For mass production, our robust supply chain and annual manufacturing capacity of over 60,000 thermal modules ensure stable, on-time global delivery at scale.

Looking for a reliable and high quality thermal solution for your business needs?

Look no further than Kingka Tech! Our team of experts has years of experience in designing,manufacturing, and delivering top-of-the-line thermal solutions for a wide range of industries.
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