Skiving Process
Amid the rapid development of the electronics industry—where components like IGBTs, LEDs, and AI chips are becoming smaller yet more powerful—heat dissipation has emerged as a critical factor determining product performance. Traditional heat sink manufacturing processes (such as aluminum extrusion and stamping) often face bottlenecks: aluminum extrusion struggles to achieve high fin density, stamping tends to result in insufficient fin strength and unavoidable assembly gaps, and the core pain point is that both require high mold costs, severely limiting sample iteration efficiency. As a precision manufacturing technology, the skiving process redefines heat sink performance with its core advantages of “mold independence,” flexible sample development capabilities, and seamless high-density heat dissipation structures. For thermal management manufacturers and engineers, mastering the skiving process is not only a technical upgrade but also a key driver to accelerate R&D cycles and reduce innovation costs.
What is the Skiving Process?
Why is the Skiving Process Superior to Traditional Heat Sink Manufacturing Technologies?
Compared to aluminum extrusion and stamping processes, the skiving process offers three irreplaceable advantages in high-performance heat dissipation scenarios, with the “zero mold cost + flexible sampling” feature being particularly prominent:
- No Assembly Gaps for More Efficient Heat Transfer
Stamped heat sinks require punching individual fins via molds and assembling them with the base—gaps may form at assembly points or additional thermal conductive materials may be needed, creating thermal resistance bottlenecks that slow heat transfer. In contrast, the integrated structure produced by the skiving process ensures fins and base are made from the same metal block, allowing heat to transfer directly from the base to the fins without obstruction. Test data shows that skived heat sinks transfer heat 18%-28% faster than stamped ones, a crucial advantage for components like EV (Electric Vehicle) IGBTs that generate over 300W of heat.
- Ultra-High Fin Density + High Structural Strength for Complex Scenarios
The skiving process can produce fins as thin as 0.05mm with integral molding, resulting in structural strength over 40% higher than stamped fins. This means skived heat sinks offer 50% more heat dissipation area than traditional products of the same volume, while also withstanding harsh conditions like vibration and impact—making them ideal for servers, automotive batteries, and industrial equipment.
- Zero Mold Costs for Extremely Flexible Sample Development
No custom molds are required throughout the process, completely eliminating mold fees and weeks of waiting time.
Core Application Scenarios of the Skiving Process
Key Factors for Optimizing the Skiving Process
To fully leverage the “mold-free + high flexibility” advantages of the skiving process, manufacturers need to focus on three core variables:
1. Metal Material Selection
- Aluminum: 1060, 3003, 6063
- Copper: C1100, 1020
2. Fin Design Parameters
- Maximum Fin Width: 1200mm
- Maximum Fin Thickness: 2mm
- Minimum Fin Thickness: 0.05mm
- Minimum Fin Pitch: 0.05mm
- Maximum Fin Height: 150mm
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