Nitrided Parallel Twin Screw Barrel - 38CrMoAl, HV850-1000 for Compounding
SEO Title: Nitrided Parallel Twin Screw Barrel - 38CrMoAl, HV850-1000 for Compounding
Meta Description: Precision nitrided parallel twin screw barrel in 38CrMoAl with hardness HV850-1000, depth 0.45-0.7mm, straightness 0.015mm. Ideal for compounding and pelletizing.
URL Slug: nitrided-parallel-twin-screw-barrel-38crmoal
Product Summary
This nitrided parallel twin screw barrel is manufactured from high-grade alloy steel 38CrMoAl (1.8509), heat-treated to achieve a nitrided hardness of HV850-1000 and case depth of 0.45-0.7mm. With surface roughness Ra 0.4 and screw straightness within 0.015mm, it ensures stable plasticizing and extrusion performance for compounding and pelletizing applications.
Key Selling Points
- Nitriding Hardness HV850-1000 – extends service life under abrasive polymer processing conditions.
- Case Depth 0.45-0.7mm – provides wear-resistant layer while maintaining core toughness.
- Straightness ≤0.015mm – ensures uniform clearance and consistent melt quality.
- Surface Roughness Ra 0.4 – reduces material sticking and improves plasticizing efficiency.
- ISO9001:2015 & ISO14001:2015 Certified – quality and environmental management guaranteed.
Technical Specifications
| Hardness After Hardening & Tempering | HB260-310 |
| Nitrided Hardness | HV850-1000 |
| Nitrided Case Depth | 0.45-0.7mm |
| Nitrided Brittleness | Less Than Grade 2 |
| Surface Roughness | Ra 0.4 |
| Screw Straightness | ≤0.015mm |
| Available Diameter Range | Φ45-Φ350 |
Models and Options
Standard model series covers diameters from Φ45 to Φ350. Custom lengths and screw geometries available upon request.
Materials and Structure
Made of 38CrMoAl (1.8509) alloy steel, nitrided to achieve HV850-1000 surface hardness. The barrel is designed for co-rotating parallel twin-screw extruders used in compounding and pelletizing lines.
Applications
Primary application: plastic compounding and pelletizing. Suitable for processing various thermoplastics including PVC, PE, PP, and engineering plastics. Also used in masterbatch production and recycling.
Customization
We offer customized barrel length, feed port position, venting holes, and internal profile according to customer drawings. MOQ: 1 unit. Delivery: FOB/CIF. Payment: 30/70.
Case Study
Client: Plastic Products Manufacturer – needed wear-resistant barrels for high-filler PVC compounding. Our nitrided barrels achieved a service life of 1-5 years under normal conditions, reducing downtime.
FAQ
- What is the MOQ for this barrel? – MOQ is 1 unit.
- Can you supply barrels with bimetallic lining? – Yes, we offer bimetallic options as separate variants.
- What is the typical lead time? – Lead time depends on size and customization; please contact us for details.
- Do you provide certificates? – Yes, we have ISO9001:2015, ISO14001:2015, and ISO45001:2018 certifications.
- Can I get a sample? – Samples can be arranged; please discuss with sales.
- What payment terms do you accept? – 30% deposit, 70% before shipment.
- How do you ensure quality? – Pre-shipment testing is standard; we use CNC machining and German inspection equipment.
Inquiry Information
Contact Martin: info@gmscrew.com | Tel: +86 13575629951 | WhatsApp: +86 13858143949
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