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What Is Bonded/Brazed Fin Cold Plate?

Bonded/brazed fin cold plates are advanced liquid-cooled radiators designed to solve the problem of high power, high heat flux density heat dissipation. It is unique in that it uses a pre-stamped, high-density fin array to be positioned through a runner groove on a precision-machined base plate, and advanced bonding or vacuum brazing technology to securely bond the fins to the base plate.
This structure uses fins to create a large internal heat transfer surface area within the runner, which is 3 to 5 times larger than that of a conventional drilled cold plate. When coolant flows through these dense fins, it produces a significant turbulence effect, effectively breaking the boundary layer and greatly improving the heat transfer coefficient. Finally, the entire structure is encapsulated by a sealed cover to ensure that the runner is intact and leak-free.

Core processes and advantages:

Brazing: In a high-temperature vacuum environment, the metallurgical bonding of the fins and the base plate is achieved by filling the brazing material, with high connection strength and extremely low thermal resistance. Epoxy Bonding: Bonding with epoxy resin with high thermal conductivity is a simple process and low cost, suitable for applications with relatively loose thermal resistance requirements. Structural advantages: The combination of fins and bottom plates realizes the perfect integration of fluid convection heat transfer and solid conduction heat transfer, and the heat dissipation performance far exceeds that of a single process cold plate.

The Core Benefits of Winshare Bonded Fin Cold Plates

The manufacture of precision-drilled cold plates places high demands on material uniformity and machinability. Winshare Thermal Alloy is capable of performing precision deep hole drilling on a variety of high-performance metals to meet the most demanding heat dissipation requirements:

Superior heat dissipation and high heat flux density support

Through precision-engineered fin geometries and high-density runners, our cold plates provide a large internal heat transfer surface area and significantly increase the heat transfer coefficient. This enables our products to effectively handle high heat loads up to 1500W and above, as well as high heat flux density challenges of more than 200W per square centimeter.

Excellent cost-effectiveness and mass production advantages

Compared to processes such as deep hole drilling or friction stir welding (FSW), bonded fin cold plates have a more mature and cost-controlled production process. It offers near-top performance while effectively reducing overall manufacturing costs, making it ideal for medium to high-volume production needs, offering the perfect combination of performance and affordability.

Highly flexible and customized design

Our team of engineers can flexibly customize the type of fins (e.g., straight, folded, or staggered), the height and spacing of the fins, and the runner layout according to your specific needs. This allows the cold plate to perfectly match different heat source shapes, power distributions, and system flow resistance requirements.

Superior structural reliability and durability

Our vacuum brazing process creates a strong metallurgical bond that ensures a strong connection between the fins and the base plate with very low thermal resistance. With strict testing processes, the product has excellent vibration resistance and high pressure resistance, providing long-term stable reliability guarantee.
 
 

Support large size and special-shaped customization

Unlike extruded cold plates with limited mold size, the bonding cold plate process can easily manufacture larger cold plates to meet the heat dissipation needs of large heat sources (such as server blades, high-power IGBT modules), providing great design freedom.
 
 
 
 

Diverse material combinations and surface treatments

We can combine different materials according to specific application needs, such as copper fins with better thermal conductivity and lightweight aluminum baseplates. At the same time, various surface treatments such as nickel plating and anodizing are available to enhance corrosion resistance.
 
 
 

Why Choose Winshare Thermal Alloy?

Bonded Fin Cold Plates Core Product Parameters and Customization Capabilities

Winshare's bonded fin cold plates offer a fully customized service. Below is the scope of our design capabilities, which we will precisely optimize to meet your specific application needs.
Thermal Resistance
 
Achieves as low as 0.015 °C/W
The lower the temperature rise generated by the heat source per watt of power, the better the heat dissipation performance.
 
 
Runner design
 
Fin densities can reach 30 fins/inch
Customize multiple fin types (straight, folded, staggered) and runner layouts to balance cooling performance with system pressure drop.
 
 
Dimension
 
Up to 1500mm × 800mm
It breaks through the size limitations of the extrusion process, especially suitable for large heat sources such as large server blades and battery packs.
 
 
 
Operating Pressure
 
Up to 200 PSI
Through advanced vacuum brazing processes and rigorous high-pressure testing, the structural integrity and tightness of cold plates under harsh working conditions are ensured.
 
Surface Flatness
 
Better than 0.05 mm
Through precision CNC machining and fine grinding processes, it ensures that the cold plate maximizes contact with the heat source surface and minimizes contact thermal resistance.
 
Fluid Connectors
 
Multiple interface options
Multiple interface customizations are supported, such as NPT, BSPP threaded fittings, quick couplings, etc., to be compatible with your existing system.
 
 

Bonded Fin Cold Plates Commonly Used Core Materials

Aluminum alloy
 
Commonly used grades: 6061, 6063 Advantages: Lightweight, cost-effective, easy to process. It is the material of choice for most liquid cooling applications, providing excellent heat dissipation and good corrosion resistance.
 
Copper alloy
 
Commonly used grade: C11000 (pure copper) Advantages: Thermal conductivity of up to 400 W/m·K, twice that of aluminum. It is suitable for ultra-high heat flux density applications where extreme thermal performance is required.
 
Mixed materials
We can combine different materials, such as: - Copper Base Plate + Aluminum Fins: Utilizes the ultra-high thermal conductivity of copper to contact the heat source, while taking advantage of the lightweight and cost advantages of aluminum as a fin material.
 

Winshare Quality Certification and Assurance

We understand that the reliability of our products is crucial. Winshare has established a comprehensive quality management system and conducts multiple rigorous tests on each product to ensure its performance and long-term stability.

Winshare Bonded Fin Cold Plate Application Fields

Power electronics

IGBT modules, frequency converters, inverters

Data centers

CPU, GPU, HPC clusters, liquid-cooled servers

New energy vehicles

Battery packs, electronic control units (ECUs), power semiconductors

Industrial automation

Industrial control cabinets, robot drives, laser equipment

Medical devices

Magnetic Resonance (MRI), CT, X-ray Equipment

High-power LED lighting

stage lights, street lights, professional photography lights

Winshare Bonded Fin Cold Plates Customization Process:

From Concept to Product

Requirements analysis and design
 
We work closely with you to comprehensively assess your cooling needs, including heat load, component size, coolant type, flow rate, pressure drop limits, and environmental requirements, to develop a preliminary design plan.
 
 
Thermal Design and CFD Simulation
 
Our team of engineers will utilize specialized CFD (Computational Fluid Dynamics) simulation software to accurately simulate the performance of cold plates under real-world operating conditions, optimizing fin type, height, density, and runner layout for optimal thermal performance.
 
 
Precision machining and bonding
 
High-precision CNC machine tools are used to process the base plate and cover plate, and the fins are accurately cut. Subsequently, in a dust-free environment, the components are perfectly bonded using vacuum brazing or high-strength epoxy bonding technology.
 
 
Rigorous quality inspection
 
We perform rigorous tests on each cold plate, including helium mass spectrometry leak detection tests, high pressure and burst tests, thermal resistance and uniformity tests, to ensure that the product meets or exceeds design standards in terms of performance and reliability.
 
 
Surface Treatment & Delivery
 
According to customer requirements, various surface treatments such as nickel plating and anodizing are provided to enhance corrosion resistance. Finally, the product is finely packaged and delivered to you on time.
 
 
 

Bonded Fin Cold Plate Frequently Asked Questions (FAQs)

Work with Winshare Now to Customize Your Deep Hole Drilled Cold Plates!

Guangdong Winshare Thermal Technology Co,Ltd. Founded in 2009 focused on high-power cooling solutions for the development, production and technical services, committed to becoming a new energy field thermal management leader for the mission.

CONTACT INFORMATION

Phone: +86-18025912990
E-mail: wst01@winsharethermal.com

ADRESS

No.2 Yinsong Road,Qingxi Town,Dongguan City, Guangdong Province, China.
No.196/8 Moo 1, Nong Kham Subdistrict, Si Racha District, Chonburi Province.
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