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Skived Fin

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Analysis of Core Technology for Turning Fin Plates

The turning of fin plates employs a complete metal substrate micro-cutting process (substrate: C1100 oxygen-free copper / 6061-T6 aluminum alloy). Through nanometer-level precision CNC milling, high-density fin array (40-120 fins/inch) is directly cut into the substrate to achieve a coordinated optimization of heat dissipation area and structural strength.

Key breakthrough points in the process:

● Micro-slot forming technology: High-frequency oscillation cutting of hard alloy tools (amplitude ±5 μm), achieving a thickness of 0.3mm for ultra-thin fins (tolerance ±0.015mm)
● Thermal deformation suppression: Low-temperature nitrogen gas jet cooling, maintaining substrate temperature ≤ 80℃ (ΔT < 2℃)
● Zero thermal resistance interface: Atomic-level metal bonding between fins and substrate (thermal conductivity 398 W/m·K @ Cu)

Five disruptive advantages

1. Thermal conduction revolution

● Comparison of bonding/pressing process: Interface thermal resistance reduced by 98% (<0.03℃/W)
● Heat flux capacity: ≥ 200W/cm² (applicable to server CPUs/GPUs)

2. Turbulence enhancement design

● The edge of the fin has a 25° asymmetric bevel, and the forced convective heat transfer coefficient is increased to 450 W/m²K.
● The wind resistance has been reduced by 18% (compared to straight fins)

3. Three-dimensional topological architecture

● Double-sided staggered fin layout (bionic flexible core tube structure), the heat dissipation volume efficiency is increased by 6.2 times
● Support for surface conforming (minimum curvature radius R = 2.5mm)

4. Stability in extreme environments

● Thermal cycling test (-40℃ to 125℃) > 5000 cycles without deformation
● Vibration condition (20G @ 500Hz) - no structural failure occurred

5 . Micro-channel integration

Can integrate 0.5mm micro-liquid cooling channels, achieving dual-mode gas-liquid heat dissipation
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