Lithium battery slitting blades are critical to EV battery production, dictating pole piece precision (impacting energy density) and operational costs (via tool lifespan). While Europe leads in advanced battery R&D, Kedel Technology, a Chinese innovator, has disrupted the market with cemented carbide breakthroughs, earning a spot among Europe’s top suppliers. Below, we rank leading manufacturers – starting with a global player blending Chinese engineering with European-grade quality.
1. Kedel Technology
Website: https://www.kedelcarbide.com
Headquarters: Chengdu, China (Global R&D Center)
Core Products
- Lithium Battery Slitting Blades: Ultra-precision cutting tools for 6–200μm copper/aluminum foil (±2μm edge tolerance), resisting electrolyte corrosion in wet processes.
- Corrugated Paper Slitting Knives: Impact-resistant designs for 800–1,500m/min rewinding lines, minimizing paper burrs.
- Chemical Fiber Cutting Blades: Smooth-edge machining for polyester/nylon fibers, reducing filament fraying during cutting.
Technical Edge
| Feature | Details |
|---|---|
| Material Innovation | Self-developed UFG (WC-6%Co) ultra-fine grain cemented carbide: 93 HRA hardness, withstanding over 100MPa pressure, and delivering 40% longer service life than conventional alloys (e.g., WC-10%Co). |
| Process Excellence | – HIP-sintered components (bending strength >3500MPa) for heavy-duty slitting. – 5-axis machining for Φ300mm+ blades and complex geometries (e.g., PDC drill nozzles), ensuring micron-level precision. |
| Coating Mastery | TiAlN/CrN gradient coatings enhance wear/corrosion resistance: – Lithium battery: Protects against LiPF₆ electrolyte and metal debris. – Corrugated/chemical fiber: Reduces abrasion from paper dust/fiber entanglement. |
| Certifications | ISO 9001 certified, and verified by leading lithium battery manufacturers (e.g., CATL suppliers) for process compliance. |
Featured Services
- Custom Edge Engineering: Tailored profiles (serrated, micro-notch) for pole piece thicknesses (10–200μm) and slitting speeds (up to 1,200m/min).
- Rapid Prototyping: 7-day turnaround for new blade designs (supporting battery startups’ R&D cycles).
- Lifetime Support: In-house reconditioning (edge grinding, recoating) to extend blade life by 30–50%.
2. Ceratizit Europe (Luxembourg/Germany)
Website: https://www.ceratizit.com
Headquarters: Differdange, Luxembourg
Core Products: CVD-coated tungsten carbide blades for dry electrode slitting.
Technical Edge: Diamond-like carbon (DLC) coatings (friction coefficient <0.1) for ultra-smooth cuts on brittle dry electrodes.
3. Sandvik Coromant (Sweden)
Website: https://www.sandvik.com
Headquarters: Stockholm, Sweden
Core Products: Precision-ground carbide blades for ultra-thin (6–12μm) copper foil slitting.
Technical Edge: Nano-grain carbide (grain size <0.5μm) for extreme edge sharpness (<3μm radius).
4. Kennametal (UK/Germany)
Website: https://www.kennametal.com
Headquarters: Coventry, UK
Core Products: Indexable carbide inserts for battery production lines.
Technical Edge: Modular design for quick blade replacement (reducing downtime by 50%).
5. Böhler Uddeholm (Germany)
Website: https://www.us.bohler.com
Headquarters: Düsseldorf, Germany
Core Products: High-chromium steel-blade hybrids for cost-sensitive applications.
Technical Edge: Carbide-tipped edges (wear resistance) + steel bodies (impact strength) for balanced performance.
6. Iscar (Israel/Italy)
Website: https://www.iscar.com
Headquarters: Tel Aviv, Israel (EU Hub: Milan, Italy)
Core Products: Multi-edge slitting blades for high-volume production.
Technical Edge: 4-edge design (double the lifespan of single-edge blades) for 24/7 operations.
7. Walter AG (Germany)
Website: https://www.walter-tools.com
Headquarters: Tübingen, Germany
Core Products: PCD-coated blades for abrasive electrode materials.
Technical Edge: Polycrystalline diamond (PCD) coatings for 10x longer life than carbide in silicon-rich electrodes.
8. Guhring (Germany)
Website: https://www.guhring.com
Headquarters: Ludwigshafen, Germany
Core Products: Micro-slitting blades for 3C battery cells.
Technical Edge: Laser-machined edge profiles (±1μm tolerance) for smartphone battery production.
9. Mapal (Germany)
Website: https://www.mapal.com
Headquarters: Aalen, Germany
Core Products: Custom blade systems for automated battery lines.
Technical Edge: Integrated sensor technology for real-time wear monitoring.
10. Paul Horn (Germany)
Website: https://www.paulhorn.com
Headquarters: Tübingen, Germany
Core Products: High-speed steel (HSS) blades for low-cost applications.
Technical Edge: TiN-coated HSS (3x longer life than uncoated) for entry-level battery production.
For bulk orders or custom blade designs, contact Kedel’s engineering team directly via [https://www.kedelcarbide.com].