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. Effectively solve the difficulty
of unstable extrusion and frequent maintenance in general plastic
processing, becoming a cost-effective choice for small-to-medium
extrusion manufacturers.
