The core competitiveness of flexible hardfacing ropes lies in the synergistic effect of their composite structure:
Irregularly shaped cast tungsten carbide (Cast WC) forms an “interlocking” wear-resistant mechanism during abrasion, while spherical nickel-based alloy particles fill gaps between hard phases through molten flow, creating a dense, pore-free wear-resistant layer. This structure retains the ultra-high hardness of tungsten carbide (HV₀.₁ ≥ 2000) while solving the cracking issue of traditional hard materials during welding via the self-fluxing property of nickel-based alloys.
The cold extrusion molding process avoids the hardness loss of tungsten carbide caused by high-temperature processing and ensures the uniform distribution of hard and bonding phases. Compared to conventional hardfacing electrodes, the flexible rope can be bent into arbitrary shapes, adapting to welding complex curved surfaces (e.g., pipe inner walls, gear tooth surfaces) and significantly improving construction flexibility.
Grade & Chemical Composition
| Grade | Hard-phase | Bonding-phase |
| 3BD6A | Cast WC, Spherical Cast WC | Nickel-based alloy |
Specification
| Grade | Diameter (mm) | Packaging Weight (kg) |
| 3BD6A094C | 5 | 15 |
| 3BD6A094E | 6 | 15 |
| 3BD6A094F | 8 | 15 |
The particle size and category of the hard phase can be tailored to customer requirements.
Performance Parameters vs. Industry Standards
| Performance Indicator | Flexible Hardfacing Rope (3BD6A) | Conventional Hardfacing Electrode | Standard Wear-Resistant Wire |
| Hardness (HV₀.₁) | ≥ 2000 | 1200-1800 | 800-1500 |
| Impact Toughness (J/cm²) | 15-25 | 5-10 | 8-12 |
| Welding Efficiency (m/min) | 0.8-1.2 | 0.3-0.5 | 0.5-0.8 |
| Operating Temp Range (℃) | -50~600 | -30~400 | -20~300 |
Source: Compiled from industry standards and product test reports
Application Scenarios
Extreme Working Condition Protection
Mining Equipment: Applied to crusher jaw plates and scraper conveyor middle troughs, extending service life by 3-5 times compared to high manganese steel. A gold mine reported 40% annual maintenance cost reduction after applying it to ball mill liners.
Oil Drilling: Hardfacing for mud pump liners and drill pipe joints on offshore platforms, withstanding sand-containing mud erosion for 8000+ hours without significant wear.
For high-impact scenarios (e.g., crushers), 3BD6A094F (8mm diameter) is recommended, with hard phase content increased to 60%.
Precision Industrial Fields
Food Processing Machinery: Surface treatment of dough mixer spiral shafts, meeting FDA food contact material standards (nickel release < 0.1mg/kg) while preventing metal contamination.
Chemical Equipment: Seal face hardfacing for reactor agitator shafts, offering superior corrosion resistance to stainless steel 316L in pH 2-14 harsh environments.
For precision wear scenarios (e.g., conveyor rollers), 3BD6A094C (5mm diameter) balances wear resistance and surface finish.
Customization Services:
Support for particle size adjustment(e.g., 60-120 mesh tungsten carbide) and alloy composition optimization(adding Cr/B elements to enhance corrosion resistance) to meet special working conditions (e.g., Mn addition for low-temperature toughness improvement).
