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Heavy-Duty High-Fin Copper Tube Rolling Blade
Robust rolling blades engineered for high-profile integral copper fin production with extreme surface area expansion.
- Fin Type:
- High-Profile Integral Fin (Air-Cooled Heat Exchanger)
- Fin Height Range:
- 6.0mm - 16.0mm (0.24" - 0.63")
- Tooling Material Grade:
- Premium Cr12MoV / D2 / High-Speed Steel M2
- Applicable Standards:
- ASTM / ASME SB359 (C70600, C71500, C12200), B111, B444
- Hardness & Finish:
- 58-62 HRC Vacuum Treated | Ground Finish (Ra < 0.2 μm)
- Application:
- Air-Cooled Heat Exchangers (ACHE) & Dry Coolers
Applicable StandardsASTM / ASME B359, SB359, B111, B444, DIN EN 12451
Tooling Material GradesCr12MoV, D2, SKD11, High-Speed Steel M2, Carbide
Precision Tolerance±0.005 mm (±0.0002 in) Ground Finish
Compatible TubingCopper (C70600, C71500), Stainless Steel, Aluminum
Technical Specifications
Multi-Stage Deformation Precision
Forming high fins from a copper tube's wall requires a sophisticated rolling sequence. Our blades are designed to work in concert across three distinct stages of metal deformation:
- Primary Incision: Precise initial cut to set the fin pitch
- Intermediate Sequence: Gradual material extrusion to build fin height
- Final Finishing: Precision shaping of the fin tip and root radius
Technical Capability Comparison
Understanding the difference in tooling requirements between standard and heavy-duty rolling operations.
| Feature | Standard (Low-Fin) | Heavy-Duty (High-Fin) |
|---|---|---|
| Typical Fin Height | 1.0mm - 3.0mm (0.04" - 0.12") | 6.0mm - 16.0mm (0.24" - 0.63") |
| Rolling Force & Stress | Moderate Load | High / Extreme Radial Load |
| Blade Profile & Tolerance | Single Profile (±0.02mm) | Progressive Multi-Profile (±0.005mm / ±0.0002") |
| Surface Expansion Ratio | 2x - 3x Surface Area | Up to 10x+ High Thermal Area |
Optimized for Air-Side Heat Transfer
The primary goal of high-fin tubes is to compensate for the lower heat transfer coefficient of air. Nexmek's rolling blades ensure that the integral bond between the fin and the tube is seamless, eliminating thermal resistance and maximizing the efficiency of cooling towers, radiators, and dry coolers.