Ø60mm Tungsten Carbide Circular Slitting Blade 0.5mm Ultra-Thin with 17° V-Edge for Precision Film and Foil Cutting
In precision slitting and micro-cutting applications, tool thickness and blade geometry determine the quality of the cut and the yield of the final product. This Ø60mm tungsten carbide circular slitting blade is engineered to meet the most demanding precision cutting requirements. With an ultra-thin 0.5mm thickness and a highly specialized 17° V-shaped cutting edge (with a 1.66mm cutting depth), it delivers exceptionally clean cuts with minimal kerf loss and burr formation.
| Parameter | Specification |
|---|---|
| Outer Diameter (OD) | Ø60 mm |
| Inner Bore (ID) | Ø19 +0.02 / 0 mm |
| Thickness | 0.5 +0.05 / 0 mm |
| Cutting Edge Angle | 17° V-Edge |
| Cutting Depth (Edge to Center) | 1.66 mm |
| Material Grade | 6% Cobalt (Co), Tungsten Carbide |
| Hardness | HRA 91–92 |
| Surface Finish (Blade Face) | Ra 0.4 / Ra 0.2 μm (Mirror Polish) |
| Surface Finish (Cutting Edge) | Ra 0.2 μm |
| Flatness / Parallelism | 0.01 mm (Precision Lapped) |
| Edge Quality | Sharp, V-shaped profile, burr-free |
- Ultra-Thin 0.5mm Profile: Minimizes kerf loss and material waste, making it ideal for high-value materials such as battery electrodes and thin films.
- 17° V-Edge Geometry: The precisely ground V-shaped cutting edge (DET - A) concentrates cutting force for clean shearing and separation with minimal deformation of the workpiece.
- Tight Tolerances: The outer diameter (Ø60), inner bore (Ø19 +0.02/0), and thickness (0.5 +0.05/0) are machined to exacting tolerances to ensure precise fit on slitting machine arbors.
- Mirror Surface Finish: Ra 0.2–0.4μm surface finish on the blade faces and cutting edge reduces friction, prevents material adhesion, and ensures smooth chip evacuation.
- Precision Lapped Flatness: 0.01mm flatness and parallelism prevent blade wobble, ensuring consistent cutting quality and extended blade life.
| Industry | Application | Why This Blade |
|---|---|---|
| Battery Manufacturing | Slitting of lithium-ion battery electrodes (cathode/anode foils), separator films | Ultra-thin 0.5mm profile minimizes material waste; mirror finish prevents particle adhesion |
| Electronics | Cutting of copper foil, aluminum foil, flexible printed circuits (FPC), and shielding materials | 17° V-edge provides clean, burr-free cuts; high precision ensures component integrity |
| Packaging & Films | Precision slitting of BOPP, PET, PVC, and other thin films | Minimal kerf loss; extended blade life in high-speed slitting operations |
| Medical Devices | Cutting of medical films, transdermal patches, and diagnostic strips | Cleanroom compatible; mirror finish meets hygienic requirements |
| Specialty Tapes | Slitting of adhesive tapes, protective films, and conductive tapes | Ultra-thin profile prevents adhesive buildup; clean edge ensures consistent tape width |
| Metal Foils | Precision slitting of thin metal foils (copper, aluminum, brass) | HRA 91–92 hardness withstands abrasive metal foil cutting |
This ultra-thin circular slitting blade is manufactured through a rigorous, multi-stage process to ensure the highest precision:
- Step 1: Powder Preparation — High-purity tungsten carbide powder is precisely blended with 6% cobalt binder.
- Step 2: Isostatic Pressing — The blended powder is pressed using isostatic pressing technology, ensuring uniform density throughout the thin disc blank.
- Step 3: Vacuum Sintering — Blanks are vacuum-sintered at precisely controlled temperatures to achieve full density and optimal mechanical properties.
- Step 4: Precision Lapping & Grinding — The blade faces are precision lapped to achieve 0.01mm flatness and parallelism, and the OD/ID are precision-ground to the specified tolerances.
- Step 5: V-Edge Grinding — The 17° V-shaped cutting edge (with a 1.66mm edge distance) is precision-ground using specialized profile grinding equipment to achieve a razor-sharp, burr-free cutting edge.
- Step 6: Mirror Polishing — The blade faces and cutting edge are polished to Ra 0.2–0.4μm, reducing friction and preventing material adhesion.
- Step 7: Quality Inspection — 100% dimensional inspection including CMM verification of OD, ID, thickness, flatness, parallelism, and edge geometry. Edge quality inspected under high-magnification optical equipment.
This blade is designed for precision slitting and micro-cutting applications. Its ultra-thin 0.5mm profile and 17° V-edge make it ideal for slitting battery electrodes, copper foils, films, tapes, and other thin materials where minimal kerf loss and clean cuts are essential.
The ultra-thin 0.5mm thickness minimizes kerf loss (material waste) and reduces cutting forces. This is critical for high-value materials such as battery electrode foils and thin films, where maximizing material yield is essential.
The 17° V-shaped cutting edge concentrates cutting force for clean shearing and separation with minimal deformation of the workpiece. The precise edge geometry (with a 1.66mm edge distance) ensures consistent, burr-free cuts.
This formulation provides an ideal balance of hardness (for wear resistance and edge retention) and toughness (to prevent edge chipping in thin-blade applications). HRA 91–92 is significantly harder than tool steel (typically HRC 58–62), delivering 10–30× longer service life.
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