Driven by growing market demands, modern plastic processors rely on sophisticated raw materials (e.g., glass fiber, carbon fiber, mineral additives, heat-resistant compounds). This has brought severe abrasion to barrels and screws, cutting their lifespan short.
PIPLL offers a targeted solution: our specialized screws deliver proven anti-abrasion and anti-corrosion performance in real applications. From PTA treatment on screw flights to full-surface hardness coating technology, PIPLL maximize equipment durability and create real value for processors.
Technical Specifications
PIPLL Bimetallic Screw Core Material Classification Table (with Wear Resistance Rating)
Alloy Material Type | Surface Hardness | Alloy Layer Thickness | Wear Resistance Rating (1-5 Stars, 5 Stars = Highest) | Key Performance Features | Suitable Processing Materials | Exclusive PIPLL Technical Advantages |
Tungsten Carbide Reinforced Bimetallic | HRC 65-68 | 1.0-1.5mm | ⭐⭐⭐⭐⭐ | Industry-leading wear resistance, exceptional resistance to particle erosion, good impact resistance | 30-60% highly filled glass fiber/carbon fiber, mineral stone powder, wood-plastic composites, high-impurity recycled materials | Uniform distribution of ultra-fine tungsten carbide particles, 2-3 times more wear-resistant than standard bimetallic |
Standard Chrome-Molybdenum-Nickel Bimetallic | HRC 58-62 | 1.5-2.0mm | ⭐⭐⭐⭐ | Balanced comprehensive performance, excellent impact resistance, high metallurgical bonding strength | General engineering plastics (ABS/PP/PE/PS), glass fiber filling below 30%, ordinary color masterbatches | Automated PTA hardfacing, 100% porosity and crack-free, alloy layer never delaminates from substrate |
Cobalt-Based High-Temperature Bimetallic | HRC 52-56 | 1.5-2.0mm | ⭐⭐⭐½ | Excellent high-temperature strength and thermal stability, thermal fatigue resistance, high hardness retention at elevated temperatures | High-temperature engineering plastics (PEEK/PI/PPS), special engineering resins, continuous high-temperature production conditions | Hardness retention rate ≥85% at 400°C, no thermal deformation or softening |
Nickel-Based Corrosion-Resistant Bimetallic | HRC 45-50 | 2.0-3.0mm | ⭐⭐½ | Exceptional acid and alkali corrosion resistance, high-temperature oxidation resistance, chemical attack resistance | PVC, CPVC, fluoroplastics (PFA/PTFE), halogen-containing flame retardants, corrosive chemical additives | Customized nickel-based alloy formulations, withstands long-term operation at 400°C |
Nitrided Steel Base Bimetallic | HRC 52-55 | 0.5-0.8mm | ⭐⭐ | Lowest cost, good machinability, localized wear reinforcement | Pure plastics, low-filled materials, small-batch trial production, temporary replacement parts | Nitriding + localized bimetallic composite treatment, balances cost and wear resistance in critical areas |
