Jindu Copper-Tube Embedded Cold Plates
Superior Thermal Interface, High Flexibility, and Low Flow Resistance for Your Critical Cooling Needs.
What is Tube Liquid Cold Plate Technology?
Tube Liquid Cold Plates are constructed by pressing a continuous metal tube (typically Oxygen-Free Copper) into pre-machined channels within a base plate (typically Aluminum 6061/6063).
Unlike brazing or FSW, this technology utilizes a “Press-Fit + Epoxy” mechanical bond. The tube is mechanically locked into the aluminum base, often supplemented by a high-conductivity thermal epoxy to eliminate air gaps and maximize heat transfer.
Why Choose Tube Cold Plates?
Compared to Vacuum Brazing or FSW, Tube Cold Plates offer distinct advantages for specific applications
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Zero Corrosion Risk:
- The coolant acts entirely within the Copper Tube (TP1/C1100)3. It never touches the aluminum, allowing the use of standard facility water without galvanic corrosion issues.
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Leak-Proof Reliability:
- The tube is formed from a single continuous piece using 3D Bending. There are no joints or welds inside the plate to fail4.
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Cost-Effectiveness:
- No expensive vacuum furnaces or complex welding tools are required, making this the most cost-efficient liquid cooling solution for mid-to-high volume production.
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Manufacturing Process: 3D Bending & Epoxy Bonding for Tubed Cold Plates
We follow a rigorous protocol derived from our “Aluminum Plate + Copper Tube” processing standards to ensure optimal thermal performance.
Base Plate Machining & Grooving
CNC-mill precision grooves into the aluminum/copper base plate according to the thermal simulation layout. The process includes material prep, precision milling of channels and mounting features, and thorough ultrasonic cleaning to ensure a perfectly clean bonding surface.
Copper Tube Forming & Pre-treatment
Precision-cut and CNC-bend copper tubes to match the 3D groove pattern. Tubes undergo surface treatment (cleaning, plating with solder) to ensure optimal bonding readiness and are pre-fitted for inspection.
Epoxy & Sealing Process
The pre-formed tube is placed into the grooved base plate with a layer of high-thermal-conductivity epoxy. The assembly cures under controlled conditions (time/temperature), forming a permanent, sealed bond without requiring high-temperature metal joining processes.
Post-Processing & Final Testing
The bonded cold plate is finished, cleaned, and rigorously tested. This includes Helium Leak Testing (for ultra-low leak rates), Pressure/Burst Testing, Flow Resistance (ΔP-Q) Testing, and Thermal Resistance Validation to ensure performance, reliability, and longevity.
Ready to Elevate Your Thermal Management with Jindu?
Choose Jindu Gun Drilled Cold Plates for custom, high-performance liquid cooling solutions that meet the most demanding specifications.
Helium Leak Detection
For high-spec requirements, we detect leaks down to 1×10⁻⁶ mbar·L/s. 
Pressure Decay Test
Plates are pressurized with Nitrogen to 1.5x Operating Pressure and held for 5 minutes (Pressure Drop ≤0.5%).
mbar·L/s.
Thermal Performance
We verify Thermal Resistance (Rth) and Pressure Drop (ΔP) using water/glycol flow ranging from 0.5-5 L/min.
Dimensional Check
CMM inspection ensures groove depth tolerance within ±0.05mm.
Tube Liquid Cold Plate Specifications & Customization Options
While we offer 100% customization, the following “Standard Configurations” help customers select the most cost-effective options quickly.
| Spec Parameter | Standard Option A | Standard Option B | Custom Capability |
| Tube Diameter (OD) | φ 6.0 mm | φ 8.0 mm | φ 9.52mm (3/8″) / 12.7mm |
| Tube Material | Copper (TP1 / C1100) | Stainless Steel (304/316) | Cu-Ni Alloys |
| Base Material | Aluminum 6061-T6 | Aluminum 6063-T6 | Copper C1100 |
| Min Bending Radius | R = 15mm | R = 20mm | |
| Max Plate Size | 600 x 400 mm | 800 x 500 mm | Up to 1200mm |
| Cooling Power | ~500W – 1000W | ~1000W – 3000W | > 5kW (Multi-tube) |
| Surface Finish | Fly-Cut (Ra 1.6) | Nickel Plated | Anodized (Alum only) |
(Note: Standard models reduce lead time by utilizing stocked copper coil sizes.)
Industry Applications for Tubed Cold Plates
We offer flexible configurations tailored to your space constraints and thermal loads.
Lasers & Optics
Cooling Laser Diodes
Corrosion Resistance: Copper tubes handle facility water that corrodes aluminum.
Medical Devices
MRI Gradient Coils
Safety: Continuous tube design guarantees zero leaks into expensive electronics.
Power Electronics
IGBT / Inverters IGBT/
Performance: Fly-cut surface ensures low Contact Thermal Resistance.
Semiconductors
Wafer Chuck Cooling
Cleanliness: Epoxy bonding eliminates flux residue risks common in brazing.Jindu Tube Liquid Cold Plate Surface Finishing
Effective surface finishing is key to the durability, environmental protection, and performance of Jindu liquid cold plates. We offer various finishes to suit different needs.
Specialized Capabilities in Hybrid Thermal Architecture Manufacturing
At Jindu, we excel in the precision manufacture of tube-embedded cold plates. Our expertise lies in integrating high-conductivity copper tubes into aluminum bases through controlled adhesive epoxying process. This hybrid approach allows us to deliver custom, high-performance cooling solutions that perfectly balance thermal efficiency with design flexibility.
When to Choose Tube-Embedded Technology
Opt for our tube-embedded cold plate technology when your application requires a unique balance of performance, customization, and cost-effectiveness.
The Jindu Commitment
Our commitment is to deliver a solution tailored to your exact thermal and mechanical needs. We provide comprehensive CFD thermal simulation to optimize the tube layout, followed by meticulous manufacturing and 100% pressure and leak testing. When your project requires a bespoke cooling solution with complex geometries, hybrid material benefits, and reliable performance for medium-to-high power densities, our tube-embedded technology offers the ideal blend of custom engineering and value.
FAQ
A: We use AL6061-T6 or AL6063-T6 for the base plate due to their excellent machining properties. For the tubes, we exclusively use TP1/C1100 Oxygen-Free Copper to ensure high thermal conductivity and corrosion resistance. Stainless steel tubes are also available for special applications.
A: A standard round tube has very little contact area with a flat electronic component (line contact). By "Fly-Cutting" (milling flat) the top of the embedded tube, we create a wide, flat surface (area contact). This significantly reduces contact thermal resistance and improves cooling efficiency.
A:We strictly control the bending process using CNC 3D Benders and follow the "Minimum Bending Radius" rule (R ≥ 2.5D). We also monitor Ellipticity to ensure it stays below 8%, guaranteeing that the internal flow channel remains open and consistent.
A: Yes. We have 50+ CNC machines and can machine complex base plate geometries. For the tubing, as long as the bend radius allows, we can route the coolant exactly where your heat sources are located.
●Prototyping: 2-3 weeks (Includes tooling and DFM).
●Mass Production: 20-25 days typical lead time. We also offer a "Quick Turn" service for urgent engineering validation units.
A:We strictly control the bending process using CNC 3D Benders and follow the "Minimum Bending Radius" rule (R ≥ 2.5D). We also monitor Ellipticity to ensure it stays below 8%, guaranteeing that the internal flow channel remains open and consistent.
