Explore our flagship industrial tungsten carbide and cermet circular blades designed for high-speed automated processing lines.
An authoritative technical analysis on tungsten carbide metallurgy, shear slitting mechanics, and high-performance cutting blade selection for modern manufacturing.
The global manufacturing ecosystem is undergoing a dramatic technological shift driven by the rapid expansion of electric vehicle (EV) battery production, ultra-thin non-ferrous metal foil rolling, high-efficiency transformer silicon steel shearing, and sustainable flexible packaging. Within these high-speed, continuous processing industries, the metal cutting circular blade is no longer treated as a simple wear-and-tear consumable; it is engineered as a critical precision tooling element that directly impacts line productivity, edge quality, material yield, and overall Total Cost of Ownership (TCO).
As modern production lines push slitting speeds beyond 800 meters per minute, legacy high-speed steel (HSS) and sub-standard tool steel blades exhibit accelerated thermal wear, edge degradation, and micro-chipping. This micro-level blade deterioration causes downstream defects such as heavy burr formation, edge wave, metallic dust contamination, and delamination in sensitive materials like battery electrodes and ultra-thin copper/aluminum foils. Consequently, global enterprise procurement demand has shifted overwhelmingly toward advanced sub-micron Tungsten Carbide (WC) and Titanium Carbonitride (TiCN) Cermet circular blades engineered with tailored binder phases and advanced surface functionalization coatings.
Technical Insight: Reducing blade edge degradation directly correlates with zero-defect manufacturing in EV battery manufacturing. Edge burrs exceeding 2 microns in lithium-ion electrode foil slitting can puncture separator films, leading to internal micro-short circuits and battery failure.
Sichuan Shen Gong Carbide Knives Co., Ltd. has spent over two decades pioneering powder metallurgy advancements specifically tailored for industrial shearing and rotary slitting tools. Achieving the optimal balance between extreme hardness (wear resistance) and transverse rupture strength (TRS / fracture toughness) requires rigid control over the complete chemical and physical process, starting from Ready-To-Press (RTP) powder formulation to Over-Pressure Sintering (HIP).
| Material Grade | Grain Size (µm) | Hardness (HRA) | TRS (N/mm²) | Primary Application Matrix |
|---|---|---|---|---|
| Ultra-Fine WC-Co | 0.4 – 0.6 µm | 92.5 – 94.0 | 2,800 – 3,400 | Li-Ion Battery Cathode/Anode Foil Slitting, Ultra-Thin Copper Foil |
| Sub-Micron WC-Ni/Cr | 0.7 – 0.9 µm | 90.5 – 92.0 | 3,200 – 3,800 | Corrosive Environment Slitting, Food Packaging, Chemical Synthetic Foils |
| TiCN-Based Cermet | 1.0 – 1.5 µm | 91.0 – 93.0 | 2,200 – 2,600 | Silicon Steel Coil Shearing, Ferrous Sheet Finishing, Dry High-Speed Trimming |
| ETaC-3 Coated Carbide | Sub-micron + PVD | 94.5 – 96.0 | 3,000 – 3,500 | Abrasive Slurry-Coated Electrodes, High-Tension Alloy Steel Strips |
Achieving a burr-free shear cut requires strict mechanical synergy between the top circular knife, the bottom knife, and the material web. Key manufacturing parameters maintained at Shen Gong include:
When enterprise buyers evaluate circular knife suppliers, relying solely on initial blade unit cost often leads to severe operational inefficiencies. A comprehensive Total Cost of Ownership (TCO) evaluation considers:
Carbide blades optimized for a wide range of continuous industrial slitting applications.
Engineered for synthetic tow cutting with extreme edge sharpness and thermal wear stability.
Precision shear slitting tooling for silicon steel, stainless steel, and non-ferrous coil processing.
Ultra-thin razor sharp blades for clean cardboard scoring and slitting without edge crushing.
High-impact toughness carbide knives designed for heavy-duty plastic and rubber recycling.
Sub-micron carbide razor blades delivering micro-clean slits in thin polymer packaging films.
Zero-notch mirror-finished rotary shear cutters specifically designed for battery coating slitting.
High-precision matched bottom anvils providing exact shear engagement for paper and web media.
Specialized circular cutting tools engineered for tobacco paper filters, straws, and composite tubes.
Sichuan Shen Gong Carbide Knives Co., Ltd. was established in 1998. Located in Chengdu, in the southwest of China, Shen Gong is a national high-tech enterprise specializing in the research, development, manufacturing, and sales of cemented carbide industrial knives and blades for more than 20 years.
Shen Gong boasts complete production lines for WC-based cemented carbide and TiCN-based cermet for industrial knives and blades, covering the entire manufacturing chain from RTP powder formulation to precision grinding and finished product testing.
Discover specialized cutting blade engineering developed for the distinct requirements of global manufacturing sectors.
Shen Gong's high-toughness carbide materials are specially developed for producing pelletizing knives in plastic and rubber manufacturing, as well as heavy-duty shredding blades for waste recycling lines.
Razor blades designed for cutting synthetic fibers and non-woven materials deliver superior performance due to their exceptional edge sharpness, straightness, symmetry, and mirror surface finish.
Corrosion-resistant industrial knives and high-precision circular blades designed for sanitary meat cutting, sauce grinding, continuous nut crushing, and food packaging processes.
Ultra-precise medical tungsten carbide blades engineered with strict micro-tolerances for surgical instrument manufacturing, diagnostic tape slitting, and medical packaging.
We provide TiCN-based cermet cutting tools for steel part semi-finish to finish machining. Very low chemical affinity with ferrous metals results in an exceptionally smooth surface finish.
Shen Gong is the world’s largest manufacturer for corrugated slitter scorer knives. Meanwhile, we provide diamond resharpening grinding wheels, cross-cut blades, and accessories for the industry.
Advanced carbide material technology delivers exceptional durability, supported by anti-adhesion coatings, corrosion resistance, and dust suppression treatments for paper converted products.
The first company in China to develop precision slitting knives specifically designed for lithium-ion battery electrodes. Features mirror-finish edges with zero micro-notches to prevent slurry sticking.
Shen Gong’s high-precision shear slitting knives (coil slitting knives) are exported to Germany and Japan. Widely used for slitting silicon steel sheets for EV motor manufacturing and non-ferrous foils.
Since 1998, SHEN GONG has evolved into an ISO9001 certified global leader, committed to providing professional, reliable, and durable industrial knife solutions.
Production is carried out strictly in accordance with ISO quality management systems, ensuring total stability between batches. Simply provide your drawings or samples, and we handle the rest.
Rooted in knives, but far beyond knives. Shen Gong's expert R&D engineering team acts as your dedicated backup for advanced industrial cutting, shear geometry optimization, and slitting solutions.
Whether evaluating complex geometric micro-shapes, edge wear failure modes, or chemical material properties, Shen Gong provides rigorous, reliable analytical laboratory reporting.
Cherishing finite resources to build a sustainable future. For a greener planet, Shen Gong provides professional precision re-sharpening programs and eco-friendly carbide recycling services.
Our dedicated international sales and engineering team offers multilingual customer support. Submit your technical inquiry and receive comprehensive analysis and quotes within 24 hours.
Shen Gong maintains strategic partnerships with globally renowned logistics and express freight operators, ensuring fast, safe, custom-packaged international delivery worldwide.
Pioneering the future of industrial shear cutting with advanced materials, surface engineering, and automated quality verification.
As industrial automation accelerates, metal slitting and shearing systems demand smarter, more durable cutting media. Shen Gong's R&D roadmap focuses on three key technological pillars:
Our proprietary ETaC-3 thin-film coating dramatically reduces coefficient of friction while increasing surface micro-hardness up to HV3500. This development addresses abrasive slurry adhesion when slitting battery cathodes loaded with NCM/LFP materials.
Implementing 100% automated optical inspection (AOI) with sub-micron resolution during manufacturing guarantees zero notch defects across the entire circular blade circumference before dispatch.
Engineering next-generation TiCN-based cermet compositions with tailored nickel-molybdenum binder phases provides superior thermal shock resistance during high-speed dry shearing of electrical steel coil strips.
Expert answers to commonly encountered engineering inquiries in rotary slitting and metal shear blade selection.
Burrs are primarily caused by blade edge micro-chipping, excessive axial runout, improper side clearance angle, or incorrect horizontal/vertical overlap. Switching to sub-micron tungsten carbide circular blades with an axial runout ≤ 0.001mm and edge roughness Ra < 0.02µm ensures uniform shearing force, eliminating burrs down to < 2 microns.
Tungsten Carbide offers higher fracture toughness (TRS) and wear resistance, making it ideal for non-ferrous metal foils, abrasive battery slurry coatings, and heavy plastic pelletizing. TiCN Cermet features lower chemical affinity to iron, making it superior for high-speed dry shearing of steel sheets and electrical silicon steel without material welding to the blade face.
ETaC-3 is a specialized nanocomposite physical vapor deposition (PVD) coating. It increases surface hardness up to HV3500 and creates an extremely slick, anti-adhesive surface layer that prevents battery active material (cathode/anode coating) from building up on the cutting edge, expanding tool life by up to 200–400%.
No. Tungsten carbide requires precision diamond grinding stones with specific grain sizes and resin/metal bonding matrices to avoid thermal cracking and edge micro-chipping. Shen Gong provides custom diamond grinding wheels specifically engineered for maintaining original factory bevel geometries.
Standard stock blades ship within 24–48 hours. Custom engineered OEM blades requiring specialized RTP powder press molds, custom CNC grinding, or specialized PVD coating cycles typically carry a lead time of 2 to 4 weeks depending on batch volume.
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