Wavy Skived Heat Sinks

Tailored Solutions for High-Power Applications

Up To 3000mm Length

Free Thermal Analysis

Double-side Skived Fin

Wavy Skived Fin

Types of skived heat sinks manufacturing processes

What is a Wavy Skived Fin Heat Sink?

Wavy skived fin heat sinks are manufactured by introducing controlled lateral oscillations during the skiving process, creating fins with a wave or zig-zag geometry. This structure not only increases the effective surface area but also continuously breaks the air flow boundary layer, generating a strong turbulence effect.

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Technical Advantages: Why Choose Wavy Fins?

- Breaking the Boundary Layer: Wavy fins force air to oscillate within the channels, preventing the development of a thermal boundary layer and significantly increasing the convective heat transfer coefficient compared to straight fins.
- 15% Higher Efficiency: At lower airspeeds, wavy fins typically offer 10-15% higher thermal performance than standard straight fins, achieving maximum efficiency within a constrained footprint.
- Monolithic Construction: The fins and base are skived from a single block of metal ( or ), ensuring 100% thermal conduction with zero interface resistance.

Technical Specifications & Capabilities

Manufacturing wavy skived fins requires high dynamic response from CNC skiving equipment.

Synchronized Oscillation: As the tool skives into the metal substrate, servo motors control a micron-level lateral oscillation of the blade.
Material Compatibility: This process is perfectly compatible with and , ensuring the coexistence of high thermal conductivity and complex geometries.

Industrial & Defense Applications

Due to their high heat transfer potential in compact volumes, wavy skived fins are widely used in weight-and-space-sensitive high-end sectors:

- Aerospace: High-reliability cooling for airborne power converters and avionics systems.
- Military Defense: Compact thermal management for RF amplifiers and radar T/R modules.
- Industrial Inverters: Rapid heat spreading for high-power IGBT modules in industrial drives.
- Energy Storage: Heat dissipation for high-power density Battery Management Systems (BMS).

Q&A: Engineering Insights

Does the wavy structure significantly increase air resistance (pressure drop)?

There is a slight increase (typically 5-10%), but the gain in thermal performance (over 15%) usually far outweighs the pressure drop penalty. In compact designs, this trade-off is highly valuable.

Are wavy fins more prone to dust accumulation?

In extremely dusty environments, wavy structures are slightly less self-cleaning than straight fins. We recommend using filtration systems or increasing the fin pitch for military or harsh industrial applications.

Why is wavy skiving better than brazing or bonding fins?

Because it is Monolithic. Any brazing or bonding interface introduces thermal resistance. Skiving ensures 100% continuous heat transfer from the base to the tips of the wavy fins.

Can the wave amplitude and frequency be customized?

Yes. EcoTherm can optimize the wave amplitude based on your specific fan pressure curves through CFD simulation, achieving the optimal balance between performance and resistance.

Conclusion & Call to Action

Wavy skiving is not just a process; it is a precision engineering solution for thermal hotspots. Whether your project is an aerospace-grade airborne power supply or a high-power industrial inverter, wavy fins extract more performance without increasing the footprint.

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