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What are Extrusion Heat Sinks?

Aluminum extrusion is a highly efficient manufacturing process where heated aluminum billets are pushed through a custom steel die to create complex, continuous cross-sectional profiles. This one-piece construction provides a seamless thermal path from the base to the cooling fins, significantly reducing thermal resistance.
Core Features:
 
  • Monolithic Construction: Fins and base are extruded from a single piece of aluminum, eliminating interface resistance for superior heat conduction.
     
  • Optimized Fin Density: Extrusion allows for dense fin arrays and specific aspect ratios, maximizing the convective surface area for high-performance air cooling.
     
  • Enhanced Fluid Dynamics: Straight fin profiles ensure laminar airflow, minimizing pressure drop and maximizing cooling efficiency.
     
  • Lightweight & Cost-Effective: Utilizing premium aluminum alloys (like AL6063-T5), extrusion offers an exceptional balance of low weight, high thermal conductivity (up to ~200 W/m·K), and economical high-volume production.
     
  • Structural Integrity: The continuous extrusion process ensures high tensile strength and durability, making them ideal for rugged industrial applications.

Extrusion Heat Sinks: Why They Are the Right Choice for You

Cost-Effective Scalability

Optimized for economical high-volume OEM production.

Rapid Prototyping & Tooling

Swift custom die creation and streamlined mass production.

Superior Thermal Transfer

Premium AL6063 alloys for maximum thermal conductivity.

Unrestricted Customization

Tailored fin geometries, aspect ratios, and footprint dimensions.

Versatile Industry Applications

From telecom base stations to high-power EV inverters.
 

Certified Reliability

Manufactured under strict ISO 9001 and IATF 16949 quality standards.

Our Custom Extrusion Heat Sink Manufacturing Process

At Winshare Thermal, we understand that different applications require unique heat sink dimensions and performance. Therefore, we not only offer a range of industry-standard extruded heat sink profiles, optimized for quick deployment and meeting most common cooling needs, but we also specialize in providing comprehensive and flexible customization services. Our standard profiles range from basic flat-back and U-channel designs to more complex T-, H-, and fin array designs to accommodate diverse installation environments and airflow conditions. For more challenging projects, our engineering team can work closely with you to design custom extrusion dies and profiles from scratch. This means the heat sink will perfectly fit your specific space constraints, heat load requirements, and mechanical installation requirements. In addition to customizing the profiles themselves, we also offer a comprehensive range of secondary processing services, including precision cutting, CNC machining, a variety of surface treatments, and assembly services. Choosing Winshare Thermal ensures you receive an extruded heat sink solution that combines flexibility, cost-effectiveness, and superior performance.

Extensive Standard Tooling

Access a vast library of pre-tooled profiles for rapid deployment and cost savings.
 

Advanced Custom Die Design

Collaborative engineering to design and extrude complex, application-specific profiles.
 

High-Precision CNC Machining

State-of-the-art milling, drilling, and tapping to achieve strict flatness tolerances (e.g., ±0.01mm) for optimal contact.

Professional Surface Treatments

Custom anodizing (black/clear), powder coating, and sandblasting to enhance thermal emissivity and corrosion resistance.

Extrusion Heat Sink Technical Specifications

Specification Item Detailed Description
Materials High quality aluminum alloy, mainly including- AL6063-T5: has good extrusion and surface treatment properties, and high thermal conductivity. - AL6061-T6: Higher strength, suitable for applications with higher structural requirements.
Dimensional accuracy High precision, in line with industry standards, up to ±0.05mm
Maximum width up to 500mm (20 inches)
Maximum height up to 100mm (4 inches)
Maximum length up to 6000mm (20 feet), can be cut according to needs
Fin thickness minimum 0.8mm (0.031 inches)
Fin pitch Minimum 1.5mm (0.059 inches)
Dimensional tolerances in line with industry standards, typically ±0.1mm (0.004 in) or better, depending on the design.
Surface treatment anodizing: black, transparent, blue, gold and other colors, improve corrosion resistance and radiant heat dissipation capabilities. - Electrophoresis: Provides a uniform coating with excellent corrosion protection. - Sandblasting/brushing: Improve surface texture and enhance the appearance.
Surface roughness can reach Ra 1.6 - 3.2, meeting the surface flatness requirements of different applications.
Note The above are typical specifications. We can provide more detailed or customized parameters according to your specific project needs.
 

Powering the World's Most Demanding Industries

LED lighting

High-power LED street lights, factory lighting, stage lighting, and plant growth lights. Extruded heat sinks effectively manage the high heat generated by LED chips, extending the life of the lamp and maintaining stable light efficiency.
 
 
 
 

Power Electronics

In high-power density applications such as server power supplies, communication power modules, UPS (uninterruptible power supplies), industrial frequency converters, electric vehicle charging stations, and photovoltaic inverters, extruded heat sinks ensure that power semiconductor devices (such as IGBTs and MOSFETs) operate within a safe temperature range, preventing overheating and failure.

Industrial control and automation

Industrial PCs, programmable logic controllers (PLCs), servo drives, and robot controllers. In harsh industrial environments, extruded heat sinks provide reliable heat dissipation for sensitive electronic components, ensuring long-term stable operation of the equipment.
 
 
 

Telecommunications

5G base stations, routers, network switches, and data center servers. As data transmission rates increase, the heat generated by communication equipment increases dramatically. Extruded heat sinks provide an efficient passive cooling solution to reduce operating costs.

Renewable Energy

From solar inverters to large-scale Energy Storage Systems (ESS), our robust extruded heat sinks ensure consistent heat dissipation in rugged outdoor environments, securing the stability of global green energy grids.
 

New Energy Vehicles

Power battery management system (BMS), motor controller, and onboard charger. New energy vehicles have extremely high heat dissipation requirements. Extruded heat sinks are key components that ensure stable operation of the power system under various driving conditions.

Extrusion Heat Sinks FAQ

Ready for Optimal Thermal Performance?

Don't let overheating limit your innovation. Partner with Winshare Thermal, expert heat sink manufacturers dedicated to crafting custom thermal solutions that perfectly fit your unique needs.
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

ADDRESS

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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