Bimetallic Rubber Screw And Barrel for PVC High-Filler Extrusion - HRC50-65 Alloy
Product Summary
Our bimetallic rubber screw and barrel is engineered for high-filler PVC extrusion applications, such as pipe, profile, and sheet production. It features a wear-resistant bimetallic lining (alloy hardness HRC50-65, depth 0.8-2.0mm) and chrome plating after nitriding (≥900HV), ideal for processing CaCO3 filled PVC compounds.
Key Selling Points
- Extreme Wear Resistance: Bimetallic alloy layer HRC50-65 and alloy depth 0.8-2.0mm withstand abrasive CaCO3 fillers.
- Corrosion Protection: Surface chromium-plating hardness ≥900HV after nitriding (depth 0.025-0.10mm) resists corrosive PVC byproducts.
- High Precision: Screw straightness 0.015mm and surface roughness Ra 0.4 ensure stable extrusion.
- Certified Environmental Management: ISO14001:2015 certified manufacturing process.
- Proven in PVC Extrusion: Used in PVC conical twin-screw extruders for pipe, profile, and sheet projects.
Technical Specifications
| Diameter Range | Φ20-Φ650 |
| Alloy Hardness | HRC50-65 |
| Alloy Depth | 0.8-2.0mm |
| Surface Chromium-Plating Hardness (After Nitriding) | ≥900HV |
| Chromium-Plating Depth | 0.025-0.10mm |
| Surface Roughness | Ra 0.4 |
| Screw Straightness | 0.015mm |
Models and Options
Models: Φ20-Φ650. Available in different lengths and geometries per customer drawing.
Materials and Structure
Bimetallic construction: base material options include 38CrMoAl, D2, AISI316, etc., with a wear-resistant alloy lining. Optional materials: 34CrAlNi7, DC53, AISI420, 31CrMoV9, Gr12MoV, 9Cr18MoV, 40CrNiMo, 440C, 17PH-4, 42CrMo, AISI304, Incoel 718, 40Cr, 1.2316, Hasteloy C-276, C45, 1.4462, Incoel 625, SKD11, 1.4404, Monel 400, SKD61, 1.4122, Monel 500, S600.
Applications
Specifically designed for PVC pipe, profile, and sheet extrusion projects using conical twin-screw extruders. Suitable for high-filler compounds (e.g., CaCO3) requiring enhanced wear resistance.
Customization
We accept custom designs based on customer technical drawings. MOQ: 1 unit. Batch orders from 1 to 50 pieces per batch.
Case Study
Client: Extrusion & Injection Machinery OEM
Application: Original equipment manufacturing for plastic machinery
Result: Provided stable batch delivery with high dimensional consistency, ensuring seamless machine assembly and reliable equipment commissioning.
FAQ
- What is the MOQ? MOQ is 1 unit.
- What payment terms are available? 30/70 (30% deposit, 70% before shipment).
- Do you offer pre-shipment testing? Yes, pre-shipment test is accepted.
- What certifications do you have? ISO9001:2015, ISO14001:2015, ISO45001:2018.
- Can you manufacture according to our drawings? Yes, we accept custom designs based on technical drawings.
- What is the typical lead time? Not specified.
- Do you have experience with high-filler PVC? Yes, we have specific design for high-filler PVC with bimetallic lining.
Inquiry Information
Contact: Martin - info@gmscrew.com | Tel: +86 13575629951 | WhatsApp: +86 13858143949
