Tungsten Carbide Textile Blade

Product Description

Textile blades are specialized cutting tools designed for severing, trimming, or processing fibers, yarns, fabrics, and related materials within the textile industry. Based on their specific function and application, they are categorized into types such as fabric cutting blades (cloth faller blades), yarn cutting/knotting blades, slitting circular blades, and others.

Our primary offering consists of textile blades manufactured from tungsten carbide (cemented carbide). These blades deliver high hardness and excellent impact resistance, making them particularly suitable for demanding, high-intensity operations like synthetic fiber cutting.

Unlike standard cutting blades, textile blade design must account for the unique characteristics of textile materials—including flexibility, multi-fiber structure, and a tendency to fray or snag. Consequently, commercially available textile blades feature structural designs and material selections that are specifically optimized to handle these challenging workpiece properties.

Features of Tungsten Carbide Textile Blade

Ultra-High Hardness – Exceeds Textile Cutting Strength Limits:

Tungsten carbide textile blades provide exceptional hardness, achieving a Rockwell A hardness (HRA) of 89–93, which converts to approximately HRC 69–81. This performance far surpasses common high-speed steel (HSS) blades (typically HRC 60–70) and ranks among the hardest materials available for industrial use, second only to diamond.

Practical Performance: This extreme hardness translates to superior cutting results. After continuously cutting 3,000 meters of aramid fiber, blade edges show minimal wear, maintain sharpness, and produce clean, smooth cuts with a fraying rate controlled below 1%, significantly enhancing both product quality and production efficiency.

Superior Wear Resistance – Drastically Reduces Processing Costs:

In real-world operational tests, tungsten carbide textile blades demonstrate 5–10 times the wear resistance of conventional HSS blades. Furthermore, these blades are precision-ground with industrial diamond tools during manufacturing, enabling dimensional tolerances to be held within ±0.005 mm. This high precision ensures stable cutting performance at high textile machine speeds, reducing defect rates caused by uneven blade wear.

Excellent Thermal Stability – Engineered for High-Speed Cutting:

A key performance metric is the blade’s ability to maintain consistent hardness at operating temperatures up to 500°C with no significant degradation. This property stems from the high-temperature sintering process (reaching up to 1500°C), which creates extremely stable chemical bonds between the tungsten carbide grains and the cobalt binder phase.

Application Example: During high-speed operation, friction generates substantial heat. For instance, when cutting synthetic fabric at machine speeds approaching 4,500 RPM, conventional HSS blades can rapidly exceed 300°C. In contrast, tungsten carbide blades maintain structural integrity and effective hardness even near 450°C, ensuring reliable performance under demanding high-speed conditions.

Specification of Tungsten Carbide Textile Blade

Main Material	Tungsten Carbide (WC) + Cobalt (Co) binder phase. Cobalt content (5–10%) is adjustable: 5–7% for maximum wear resistance, 8–10% for enhanced impact resistance.
Grain Size	≤ 0.8 µm (ultra-fine for high-precision slitting) or 1.0–2.0 µm (coarser grain for heavy-duty cutting). Other sizes available upon request.
Hardness	HRA 87–92 (equivalent to HRC 68–78), significantly higher than HSS blades (HRC 58–62), ensuring long-lasting sharpness.
Density	14 – 15 g/cm³
Dimensional Tolerance	±0.005 mm (for critical dimensions)
Cutting Edge Roughness	Ra 0.4 – 0.8 µm, ensuring smooth cuts and preventing fiber pull.
Service Life (vs. HSS)	3 – 8 times longer (depending on application)
Compatible Materials	Cotton, linen, synthetic fibers, non-woven fabrics, industrial textiles, etc.

Typical Applications

Pre-spinning Processes – Raw Fiber Cutting & Opening

• Machines: Cotton cleaners, carding machines, drawing frames, fiber openers.
• Function: Initial processing of raw materials (cotton, synthetics, blends) including cleaning, carding, and drawing.
• Blade Requirement: High wear resistance and low edge friction to prevent fiber wrapping.

Weaving/Knitting Processes – Yarn & Selvedge Cutting

• Machines: Rapier looms, air-jet/water-jet looms, circular weft knitting machines, warp knitting machines.
• Function: Cutting yarns and fabric edges during high-speed fabric formation.
• Blade Requirement: High impact resistance, fast cutting response, and prevention of yarn breakage.

Textile Finishing Processes – Fabric Cutting, Trimming & Shaping

• Machines: Printing/dyeing stenters, textile cutters, tentering frames, edge trimmers, hot knives.
• Function: Final shaping, cutting, and trimming of fabrics post-weaving/knitting.
• Blade Requirement: High temperature resistance (for hot cutting), chemical corrosion resistance, and smooth cutting to prevent frayed edges.

Technical Textile Processing – Heavy-Duty Cutting

• Machines: Carpet tufting machines, geotextile slitters, filter-cloth cutters, curtain dividers, industrial fabric hemming machines.
• Function: Cutting thick, dense, and tough industrial textiles (carpets, geotextiles, filter fabrics).
• Blade Requirement: Exceptional wear resistance and high impact strength for heavy-load cutting.