Products
Precision Carbide Slitting Knives For Cooper and Aluminum Foil
Detailed Description
ShenGong Carbide Knives (SG) specializes in high-hardness tungsten carbide slitting blades designed for critical foil-cutting applications. With >3500 MPa (transverse rupture strength) and micron-level edge precision, our aluminum foil slitter blades eliminate dust, burrs, and edge defects—perfect for battery electrode foils (Li-ion/NiMH), flexible packaging, and new composite materials.
Why SG’s Slitting Knives?
Zero Burr Cutting: Micro-grinding technology ensures clean cuts on 3.5μm copper foil & 15μm aluminum foil.
PVD Coating: 3–5X longer lifespan vs. uncoated blades. Resists wear, adhesion, and corrosion.
Custom Solutions: Modify blade width, edge angle, or coating to suppress wavy edges and tension-related defects.
ISO 9001 & OEM Support: Trusted by global battery foil suppliers and slitting machine manufacturers.
Features
Ultra-Hard Material: Cemented tungsten carbide with HRC 90+ hardness.
Engineered for Thin Foils: Handles 3.5–5μm copper foil, 15μm aluminum foil, and multi-layer composites.
Anti-Defect Design: Polished (edge band) reduces micro-cracks & delamination.
Industry-Leading Strength: >3500 MPa prevents chipping under high-speed slitting.
PVD/DLC Coating Options: TiAlN, CrN, or diamond-like carbon (DLC) for extreme durability.
Specifications
| Items | øD*ød*T mm |
| 1 | Φ50*Φ20*0.3 |
| 2 | Φ80*Φ20*0.5 |
| 3 | Φ80*Φ30*0.3 |
| 4 | Φ80*Φ30*0.5 |
Applications
SG’s carbide slitting knives excel in critical cutting tasks for advanced materials. They deliver flawless performance on ultra-thin anode copper foils (3.5-8μm) and cathode aluminum foils (10-15μm) for lithium-ion/NiMH batteries. Battery material suppliers rely on our blades for high-purity rolled foils, ensuring contamination-free edges. Slitting machine manufacturers integrate our custom-width blades for precision foil converting equipment. The knives also produce clean-cut EMI shielding films and flexible PCB substrates without microtears. With PVD-coated edges, they handle composite foils innew energy and electronics packaging – consistently outperforming standard tools in edge quality and longevity.
Q&A
Q: How does SG’s knife improve battery foil yield?
A: Our micron-level edge control minimizes foil tearing & dust generation, critical for high-speed battery production.
Q: Can you match existing blade dimensions?
A: Yes! Provide your width, OD, ID, or edge angle—we deliver fully compatible slitting knives.
Q: What coating is best for cutting composite foils?
A: DLC coating is recommended for carbon-coated aluminum foils due to its non-stick properties.
