Our Barrier Screw & Barrel is expertly engineered for optimal performance in complex plastic processing applications. This advanced design ensures enhanced material melting, superior mixing, and increased homogenisation, resulting in consistent and high-quality output. By incorporating a barrier flight, our screws effectively separate unmelted and melted material streams, promoting better thermal control and improving energy efficiency.
Crafted from high-grade EN41B, H13, and D2 and treated with the tempering hardness and gas nitriding process, our barrier screws offer excellent wear and corrosion resistance. This makes them particularly well-suited for applications where performance and durability are critical. The enhanced durability ensures long-lasting use, even in high-pressure and high-temperature environments.
Available in customisable sizes, SMEW’s Barrier Screw & Barrel range is ideal for improving efficiency in extrusion and injection moulding, especially in processing materials with high melting points or complex flow properties.
Product | Diameter Range | Material Name/No. | Process | Technicle Perameter | Material Type | Wear Resistance Ability | Corossion Resistance Ability |
Barrier Screw | 25 mm to 250 mm | 1.8509 (EN41B) | Gas Nitriding |
- Nitriding Hardness: 60 - 65 HRC - Nitriding Layer Depth: 0.4 - 0.6mm |
PE / PP / PVC / PET / ABS / PA / PS / PC | Good | Good |
Barrier Screw | 25 mm to 250 mm | 1.2344 (Tool Steel Material) | Fully Hardened | - Hardness: 60 - 65 HRC | ≤ 25 % Glass Fiber, PP, PA, PC, Talc Filled, PP, PEEK, PVC | Excellent | Good |
Barrier Screw | 25 mm to 250 mm | 1.2344 (Tool Steel Material) | Fully Hardened + Coatings (If Required) |
- Hardness: 55 - 60 - Coating Hardness: 65 - 70 HRC |
≤ 35 % Glass Fiber, PP, PA, PC, Talc Filled, PP, PEEK, PVC | Premium | Excellent |