Screw barrel for PE
PE Screw Barrel
PE screw barrels are essential components in extrusion equipment designed specifically for processing polyethylene resins. These screw barrels play a crucial role in melting, mixing, and extruding polyethylene into various products, ensuring uniform melt distribution, controlled cooling, and precise dimensional accuracy required for different applications.
material | 38CrMoAlA | straightness | 0.015mm/m |
hardness after quenching and tempering | HB240-280 | inside & outside diametre tolerance | ≤0.02mm |
hardness after nitridation | HV900-1000 | circular run-out | <0.04mm |
depth of nitrided layer | 0.5-0.7mm | screw length tolerance | ≤0.03mm |
brittleness after nitridation: | ≤second level | key &spine tolerance grade: | Grade 7 |
surface roughness | Ra0.4μm |
Technical Information for single screw barrel | |||
Main Base materials | 1.38CrMoAlA (SACM645) | Main Alloy Materials | 1. Ni-based alloy/Deloro alloy |
2. SKD-61 (Special Tool Steel) | 2. Tungsten carbide/Wolfram carbide | ||
3. 42CrMo (Ultrahigh StrengthSteel) | 3. NiCo-based alloy | ||
4. DC53 (Cold WorkDie Steel) | 4. Fe-based alloy | ||
5. W6Mo5Cr4V2 (High-SpeedToolSteel) | 5. Co-based alloy | ||
Processing Technics | 1. Heat treatment | Technical parameters | Nitriding layer depth:0.5-0.8mm |
2. Quenching | Nitrided hardness:900-1000HV | ||
3. Nitriding treatment | Bimetallic layer depth:3 mm | ||
4. Bimetallic alloy welding for screw | Bimetallic hardness:57~69HRC | ||
5. Bimetallic alloy centrifugal casting for barrel | Hard-chrome plating hardness after nitriding:≥950HV | ||
6. Hard-chrome electroplating | Chrome-plating layer depth:0.03-0.09mm | ||
Linearity of screw:0.015mm | Surface roughness:Ra 0.4 | ||
Benefits
PE screw barrels from Shanghai ensure uniform distribution of
molten polyethylene resin within the extrusion die, resulting in
consistent product dimensions and quality. This enhances product
performance and reduces material waste.
Crafted from high-grade materials such as nitrided steel and
bimetallic alloys, our PE screw barrels offer exceptional wear
resistance and extended service life. This minimizes downtime and
maintenance costs, ensuring continuous operation.
With advanced screw geometry and surface treatments, our
screw barrels optimize heat transfer efficiency, melt homogeneity, and
line speed control. This improves production efficiency, reduces energy
consumption, and enhances throughput rates.
We provide customization options to meet specific customer
needs, including screw diameter, L/D ratio, flight design, and material
composition. Our engineering expertise ensures that each PE screw barrel
is tailored for maximum performance and reliability.
Uniform Melt Distribution and Dimensional Stability
Enhanced Wear Resistance and Durability
Optimized Design for Efficiency
Customization Options
