Located in Zhejiang Province, CYMBER operates a dedicated copper strip processing and warehousing center exceeding 1000 m², providing integrated slitting, leveling, and packaging services to high-end manufacturing sectors including new energy batteries, precision connectors, power electronics, and thermal management components.
Among its core equipment portfolio, the manual precision copper slitting line serves as the cornerstone for converting wide master coils into narrow strips with exacting tolerances. This article focuses on the technical configuration, process flow, and quality control practices of this critical machine.
Equipment Configuration and Technical Specifications
The manual precision slitting line consists of the following main sections:
● Hydraulic Decoiler: 10-ton capacity, expandable mandrel with pneumatic braking and EPC (edge position control) system.
● Slitting Head: Heavy-duty single-shaft design accommodating up to 25 pairs of imported alloy slitting blades (hardness HRC62-64, thickness tolerance ±0.001 mm). Blade clearance and overlap are manually adjusted via precision shims to 0.002 mm accuracy.
● Tension Control: Combined magnetic powder brake and pneumatic pressure roller system ensuring stable back tension across varying strip widths.
● Recoiler: Hydraulic expansion mandrel with independent tension control, capable of simultaneously recoiling more than 20 narrow strips at line speeds up to 150 m/min.
● Auxiliary Units: Automatic edge-trim winders, hydraulic shear, and coil loading car.
Complete Slitting Process Flow
3.1 Coil Loading and Alignment Master coils (typical width 400–1300 mm, thickness 0.08–3.0 mm) are loaded via overhead crane. Laser alignment ensures edge deviation remains within ±0.5 mm.
3.2 Tooling Setup and Clearance Adjustment Based on customer-specified strip widths, technicians configure circular blades and spacers. Critical parameters include:
● Lateral blade clearance: 8%–12% of material thickness
● Blade penetration (overlap): 0.03–0.10 mm All clearances are verified multiple times using precision feeler gauges and dial indicators.
3.3 First-Piece Inspection After initial 3–5 revolutions, the line is stopped for full inspection using burr height gauges, micrometers, and optical projectors. Only after width tolerance (±0.01 mm), burr height (≤0.01 mm), and camber (≤0.5 mm/m) are confirmed does full production commence.
3.4 Continuous Slitting and Tension Management The coil runs at constant speed through the rotating blade set while edge trims are wound separately. Tension is continuously adjusted to prevent wave edges or internal stress even on strips as narrow as 4 mm.
3.5 Recoiling and Unloading Upon reaching target weight or length, finished pancakes are removed using a hydraulic unloading car and transferred to the packaging area.
Complete Slitting Process Flow
For Tier-1 customers, strip width tolerance, burr height, and camber directly influence subsequent high-speed stamping, welding, and coating yields. In lithium-ion battery current collector applications, deviations exceeding 0.02 mm in width or burrs above 0.015 mm can lead to tab misalignment or diaphragm penetration—both critical safety risks. CYMBER consistently achieves the industry’s most stringent specifications, earning long-term qualification from leading battery manufacturers.
5. Typical Processing Capabilities (excerpt)
|
Alloy |
Thickness Range |
Input Width |
Min. Strip Width |
Width Tolerance |
Burr Height |
| C1020/C1100 | 0.08–3.0 mm | 400–1300 mm | 4 mm | ±0.01 mm | ≤0.01 mm |
| T2 Copper | 0.15–2.0 mm | 400–1250 mm | 6 mm | ±0.008 mm | ≤0.008 mm |
| H65/H70 Brass | 0.2–2.5 mm | 400–1000 mm | 8 mm | ±0.015 mm | ≤0.012 mm |
Conclusion
While automated high-speed lines dominate volume production, the manual precision slitter remains indispensable when extreme accuracy and flexibility are required. Through decades of tooling expertise, tension control know-how, and rigorous first-article protocols, CYMBER delivers copper strips meeting the most demanding industrial specifications.
Should your organization require custom-width copper strip processed to tolerances of ±0.01 mm width and ≤0.01 mm burr, we welcome detailed drawings or sample material for a comprehensive feasibility study and trial slitting report.
Post time: Dec-10-2025