Product Summary
Our bimetallic injection molding screw and barrel features a high-performance alloy lining (Hastelloy C-276 or Inconel 718) applied over a tough steel base. The alloy hardness HRC50-65 and depth 0.8-2.0mm provide exceptional wear and corrosion resistance, ideal for processing high-filler PVC, corrosive polymers, and abrasive compounds.
Key Selling Points
- Extreme Wear Resistance: Alloy hardness HRC50-65 and depth 0.8-2.0mm withstand abrasive fillers like CaCO3.
- Corrosion Protection: Hastelloy/Inconel lining resists acidic byproducts from PVC decomposition.
- Extended Lifetime: 1-5 years under normal high-filler PVC extrusion conditions, reducing downtime.
- Proven Application: Successfully used in PVC pipe, profile, and sheet extrusion projects.
- Customizable Base Material: Choose from 40Cr, 42CrMo, or 38CrMoAl base depending on mechanical requirements.
Technical Specifications
| Parameter | Value |
|---|
| Alloy Hardness | HRC50-65 |
| Alloy Depth | 0.8-2.0mm |
| Base Material Options | 40Cr, 42CrMo, 38CrMoAl |
| Lining Materials | Hastelloy C-276, Inconel 718, Monel 400/500 |
| Diameter Range | Φ20-Φ300 |
| Surface Roughness | Ra 0.4 |
| Screw Straightness | ≤0.015mm |
Models and Options
Available in single or twin-screw designs. We can also apply bimetallic lining to barrels only or both screw and barrel.
Materials and Structure
Steel base with centrifugal cast alloy lining. The lining is metallurgically bonded to the base, ensuring no delamination.
Applications
Specifically designed for high-filler PVC processing (pipes, profiles, sheets), as well as for compounding corrosive polymers like fluoroplastics and liquid crystal polymers.
Customization
We customize lining thickness, alloy composition, and geometry per customer drawing. MOQ: 1 unit. Pre-shipment testing available.
Case Study
Client: Plastic products manufacturer
Application: High-wear and corrosive polymer processing
Result: Significantly enhanced wear and corrosion resistance, prolonged equipment service life, minimized production downtime.
FAQ
What is the advantage of bimetallic over nitrided screws?
Bimetallic offers higher hardness (HRC50-65 vs HV850-1000) and better corrosion resistance, ideal for highly abrasive or corrosive materials.
Can you repair existing worn screws with bimetallic lining?
Yes, we can apply bimetallic lining to refurbish worn screws and barrels.
What is the typical lead time?
Lead time depends on complexity, typically 4-6 weeks for customized orders.
Do you provide a warranty?
We offer a 12-month warranty against manufacturing defects.
Can you match existing OEM specifications?
Yes, we can reverse-engineer and manufacture to OEM specifications with 100% dimensional accuracy.
Inquiry Information
Contact Martin: info@gmscrew.com, Tel: +86 13575629951, WhatsApp: +86 13858143949.
Image Filename and Alt Suggestions
- Main Image: bimetallic-screw-barrel-hastelloy-main.png | Alt: Bimetallic injection screw barrel with Hastelloy lining front view
- Detail Image: bimetallic-screw-barrel-hastelloy-cross-section.png | Alt: Cross-section showing alloy lining on screw barrel
