Custom SG's Carbide Industrial Razor Blades for Battery Separator Cutting Supplier, Factories

SG (Shen Gong) manufactures high-precision tungsten carbide razor blades specifically developed for slitting separator films in lithium battery production. These blades feature a stable 3-hole design and are engineered to deliver clean cuts without burrs on materials like PE, PP, PVDF, and PVA. Tested in real production lines and widely used by major battery makers such as CATL and ATL, SG blades are well-suited for high-speed, high-precision slitting environments.

Product Description

Detailed Product Description

For over 25 years, our focus has been on the development and production of high-precision carbide blades for separator cutting. Our blades are made from high-density, fine-grain tungsten carbide and processed with advanced sintering and grinding techniques. Each piece is designed to perform reliably in both dry and wet separator processes, with stable output even under high-speed conditions.

Performance Highlights

M
Material & Hardness
Cemented carbide (HRA 92.5 ±0.5) with submicron grain structure (0.5–0.8μm).
S
Surface Coating
TiAlN / TiCN multilayer, anti-sticking and wear-resistant coating.
H
High-Speed Stability
Balanced for 1000–1500 m/min operation with anti-build-up prevention.
  • RoHS & REACH compliant material
  • Anti-build-up coating prevents powder adhesion
  • Consistent performance in high-speed environments

Features

  • 3–5x longer tool life compared to standard blades
  • Clean separation without smearing or material transfer
  • Stable, low-vibration cutting at high speeds
  • Custom thickness (0.1–0.3mm), edge angles (single & double), and hole patterns
  • Validated by CATL, ATL, BYD, and other Tier-1 manufacturers

Specifications

Items L*W*H mm
1 43*22*0.15
2 43*22*0.2
3 43*22*0.3

Applications

  • Lithium-ion battery separator films (PE, PP, PVDF, PVA composite materials)
  • Dry process slitting for power battery separators (EV applications)
  • Wet process cutting of ceramic-coated separators (ESS batteries)
  • Ultra-thin film processing for 3C consumer battery applications
  • High-speed precision slitting of polymer films up to 12μm thickness

Why Global Battery Manufacturers Choose Our Blades

Superior Lifespan: Up to 23% longer than Japanese and German brands.
$
Cost-Effective: 40–50% savings over European equivalents.
Technical Support: Direct engineering collaboration to solve cutting problems.

Frequently Asked Questions

Q: Why does your tungsten carbide outperform standard blades? A: Our nanostructured carbide composition combined with multi-axis CNC grinding creates edges that maintain sharpness 5-8 times longer while resisting micro-chipping and adhesive wear - critical for contamination-sensitive battery production.
Q: Can you accommodate special material requirements? A: Absolutely! We offer material-specific edge treatments including hydrophobic coatings for wet-process separators, anti-static treatments for dry-process applications, and customized edge geometries for unique film composites.
Q: What are your quality assurance procedures? A: Every blade undergoes dimensional inspection via optical comparators, edge sharpness testing under 1000X digital microscopy, run-out verification, and sample cutting tests with customer-specified materials.
Q: What is your production capacity? A: Our 20,000 sqm facility can produce over 50,000 standard blades and 10,000+ customized blades per month, with standard lead times of 30-35 days.
Q: Do you provide fast sampling for new designs? A: Yes, we offer a 7-day turnaround for new design samples to help you accelerate your development cycles.
Q: How do your blades compare in cost to European brands? A: Our blades offer 40–50% cost savings over European equivalents while maintaining or exceeding technical performance and tool life.

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