Tungsten Carbide Thin Slitter Blades for Corrugator Dry-End Lines
Corrugated Blades
Solid Tungsten Carbide thin slitter blades engineered for zero-crush corrugated board slitting. Exact OEM replacements for BHS, Fosber, and Marquip. As a complete box plant tooling manufacturer, we also supply slotter knives, Z cut-off knives, scorer/creaser knives, and stitch lap knives.
- ■Material: Tungsten Carbide WC-Co K05 / K10 / K20 (grade by board type)
- ■Application: B/C/E/F flute corrugated board — slit and score on BHS, Marquip, FOSBER corrugators
■ ISO 9001:2015 Certified
■ In-House Heat Treatment
■ Strict Dimensional Tolerances
■ Global Door-to-Door Delivery
[ Engineering Reference ]
Decisive Specifications
| Main Product | Solid Tungsten Carbide Thin Slitter Blades (HIP Sintered) |
|---|---|
| Material | Tungsten Carbide WC-Co K05 / K10 / K20 (grade by board type) |
| Blade Hardness | HRA 90–92 (Optimized for wear and in-line grindability) |
| Body Thickness | 1.0 mm – 1.2 mm (Ensures high-speed rigidity) |
| Edge Geometry | Precision lapped razor profile, ~0.3 mm apex (Zero-crush) |
| Line Speed Rating | Up to 350+ m/min on modern high-speed corrugators |
| Application | B/C/E/F flute corrugated board — slit and score on BHS, Marquip, FOSBER corrugators |
| Other Tooling Cap. | Slotter Knives, Z Cut-off Knives, Scorer Knives, Split Knives |
■ All values verified via CMM inspection · ISO 9001:2015
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[ Standard Reference ]
Common Standard Dimensions
| Target Corrugator OEM | Outer Diameter (OD) | Inner Diameter (ID) | Body Thickness |
|---|---|---|---|
| BHS | 240 mm | 115 mm | 1.0 / 1.2 mm |
| BHS | 260 mm | 140 mm | 1.2 mm |
| FOSBER | 230 mm | 135 mm | 1.15 / 1.2 mm |
| FOSBER | 260 mm | 112 mm | 1.2 mm |
| Marquip | 230 mm | 110 mm | 1.2 / 1.5 mm |
| Agnati | 240 mm | 115 mm | 1.0 mm |
| TCY / Justu | 200 mm | 122 mm | 1.2 mm |
[ Technical Audit ]
Engineering Advantages
HIP Sintered Carbide
Hot Isostatic Pressing (HIP) ensures our thin slitter blades have zero microscopic pores. This ultra-dense structure holds a flawless razor edge (~0.3mm tip) without micro-chipping under high-speed corrugated board impact.
Zero-Crush Razor Edge
A thick blade body (1.0–1.2mm) provides absolute stability against lateral wobble at speed, while the edge is deeply tapered and diamond-lapped to a razor finish. This slices the flutes cleanly instead of pressing them down.
Complete Box Plant Tooling
From Tungsten Carbide Thin Slitters on the corrugator, to Z Cut-off knives, Scorer rings, and upper/lower Slotter Knives on your Flexo Folder Gluer — we engineer the entire cutting spectrum for your box plant.
[ System Inventory ]
Related Blade Categories
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[ Knowledge Base ]
Product FAQs & Buying Guidance
Technical FAQs
01Why are my thin slitter blades crushing the flutes on E and F flute boards?+−
Flute crushing is caused by a blade that has lost its razor geometry. This happens if the blade carbide is wearing too fast, or if your automatic in-line sharpening stones are glazed. Switching to our HIP-sintered Tungsten Carbide blades ensures the edge stays microscopically sharp, shearing the flutes cleanly without compressive force.
02How do your blades interact with automatic slitter-scorer sharpening systems?+−
Our blades are engineered specifically for continuous in-line sharpening (common on Fosber and BHS lines). The carbide grain structure and cobalt binder ratio are balanced so that the blade sheds material cleanly when hit by the CBN stones, keeping the blade sharp without loading (glazing) the sharpening wheels.
03What is the advantage of a Split Top and Bottom Circular Knife?+−
On legacy slitter-scorers, changing a worn solid circular knife requires operators to pull the entire heavy shaft out of the machine. Split circular knives are manufactured in two interlocking halves. You simply bolt the halves directly around the shaft in minutes, saving hours of maintenance downtime.
Why Choose Sureay
01Can Sureay supply the entire knife package for a new corrugator and FFG installation?+−
Absolutely. We are a comprehensive tooling partner for box plants. In addition to Tungsten Carbide thin slitters, we manufacture the complete converting spectrum: Slotter knives, Beam slot knives, Stitch lap knives, Scorer/Creaser knives, and Z cut-off knives.
02Do you maintain dimensions for Bobst / Martin Flexo Folder Gluers?+−
Yes, we have an extensive database of OEM blueprints covering the slitting, slotting, and scoring sections of major converting machines including Bobst, Martin, Isowa, Ward, and TCY. Your replacement knives will be an exact drop-in fit.
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