38CrMoAlA Nitrided Extrusion Machine Screw Barrel for General Plastic Processing
This 38CrMoAlA nitrided extrusion machine screw barrel is a universal core component for general plastic processing extrusion machines, suitable for processing common plastics such as PP, PE, PVC, EVA and ABS. It’s widely used in general extrusion scenarios like pipe extrusion, profile extrusion and basic plastic molding, providing stable plasticizing, conveying and extrusion performance for small-to-medium scale production lines.
Adopting high-quality 38CrMoAlA alloy steel and precision nitriding processing, this screw barrel balances cost-effectiveness and performance. It has been verified by mass production: it maintains consistent extrusion quality during long-term continuous operation, with lower maintenance frequency compared to standard screws.
Key Specifications
| Parameter |
Detail |
| Applicable Equipment |
General Plastic Extrusion Machine (Pipe/Profile Extrusion) |
| Screw Material |
38CrMoAlA Alloy Steel |
| Screw Diameter |
Φ30mm-Φ200mm |
| L/D Ratio |
15:1-35:1 |
| Processing Technology |
72H Quenching (HB260-290), 168H Vacuum Gas Nitriding |
| Nitrided Hardness |
HRC62°-65° |
| Nitriding Depth |
0.4mm-0.7mm |
| Straightness |
0.015mm/1000mm |
| Applicable Materials |
PP, PE, PVC, EVA, ABS (General Plastic Materials) |
Frequently Asked Questions (FAQ)
Q: What types of extrusion machines is this screw barrel compatible with?
A: It’s a universal model, compatible with most general plastic extrusion machines (including pipe extrusion, profile extrusion machines) in the market, with customizable dimensions to match specific equipment.
Q: What’s the advantage of 38CrMoAlA material for general plastic processing?
A: 38CrMoAlA has excellent toughness and wear resistance after nitriding, which is sufficient to handle general plastics while keeping the cost reasonable—ideal for small-to-medium production lines.
Q: How to extend its service life during general plastic processing?
A: Avoid mixing metal impurities in materials; clean the screw barrel with PP material after daily production; periodic inspection (every 3,000 working hours) can effectively extend its service life to 15,000+ working hours.
With 72-hour quenching and 168-hour vacuum gas nitriding, this 38CrMoAlA nitrided screw barrel achieves precise dimensional accuracy and stable performance. It solves the pain points of unstable extrusion and frequent maintenance in general plastic processing, becoming a cost-effective choice for small-to-medium extrusion manufacturers.
