Application Cases
Battery Electrode Knives
Tungsten Carbide Guillotine Knife | High Precision, Clean-Cut for Li-ion Battery Electrode Cutting
Detailed Description
Engineered for high-speed electrode winding lines, SG’s tungsten carbide industrial knives deliver ultra-precise shearing for lithium battery cell manufacturing. Each electrode guillotine knife is crafted from ultrafine grain cemented carbide, with optimized edge geometry to reduce foil chipping and powder loss.
Our knives pass 300x edge magnification tests with notch depths <2μm, ensuring clean shearing and maximum consistency during continuous operation. The Ta-C (Tetrahedral Amorphous Carbon) coating significantly boosts wear resistance and lifespan—especially under high-frequency cutting in automated lines.
Trusted by China’s Top 3 battery makers (CATL, ATL, Lead Intelligent-Hengwei), Shen Gong knives have become essential replacement tools in electrode cross-cutting machines worldwide.
Features
Premium Tungsten Carbide Grade – high wear resistance and crack resistance.
300x Inspected Cutting Edge – notch <2μm for ultra-clean shearing.
Top Knife Flatness ≤2μm / Bottom Knife Straightness ≤5μm.
Burr-Free, Dust-Suppressing Design – ideal for sensitive LFP and NMC materials.
PVD Ta-C Coating – extends tool life and prevents edge microchipping.
Certified Quality – ISO 9001 approved, OEM accepted.
MOQ: 10 pcs | Lead time: 30–35 working days.
Specifications
| Items | L*W*H mm | |
| 1 | 215*70*4 | Roter knife |
| 2 | 215*17*12 | Lower knife |
| 3 | 255*70*5 | Roter knife |
| 4 | 358*24*15 | Lower knife |
Applications
Used for precision slitting in:
EV battery electrode winding stations
Automated lithium-ion cell production lines
LFP / NMC / LCO / LMO anode & cathode processing
High-speed rotary and guillotine electrode cutters
Battery pack production for EV, energy storage, 3C electronics
FAQs
Q1: Can I order custom sizes for different machines?
Yes, we offer OEM and custom configurations to fit your winding and cross-cutting equipment.
Q2: What materials are supported?
Compatible with NMC, LFP, LCO, and other mainstream Li-ion electrode materials.
Q3: How do SG’s knives reduce burrs and dust?
Our precision edge grinding and dense carbide prevent edge powdering, minimizing defects in foil layers.
Q4: Is Ta-C coating necessary?
Ta-C provides a harder, low-friction surface—ideal for improving life in high-speed or automated lines.