Wear and Corrosion Resistant Barrel Liner Twin Screw Elements For Fluoroplastic Industry
Corrosion-Resistant Liner for Food-Grade Extrusion Processes
Product Introduction
The liner is positioned inside the barrel adjacent to screw elements, making its inner wall particularly susceptible to wear and corrosion from processed materials.
Advanced Material Technology
Our proprietary OS02H Nickel-Chromium-Tungsten alloy represents a significant advancement in liner durability:
- Enhanced Cr content improves oxidation resistance, high temperature stability, and corrosion resistance
- CrB additives (microhardness 4000-4200DPH) significantly increase alloy strength
- Optimized WC content prevents segregation issues common in traditional alloys
- Hard phase increased to approximately 50% compared to conventional 10-30%
- Rockwell hardness HRC56-64 (typically controlled at HRC58-60)
- Service life 3-5 times longer than WR5 or CPM10V materials
Main Materials: NiCrW alloy (Ni60 base with CrC and CrB additives)
Key Properties: Exceptional wear resistance, corrosion resistance, full alloy melt for maximum density
Technical Specifications:
- Temperature Resistance: 600°C maximum
- Alloy Layer Thickness: ≥1.8mm
- Alloy Hardness: 57-64HRC
Our spray welding process replaces traditional sintering, achieving superior densification and extending product lifespan 3-5 times.
Extruder Barrel System
Our barrel systems feature:
- Outer barrel construction: Carbon steel
- Inner liner material: NiCrW alloy with oval flat corner design
- Available sizes: 27-87mm standard range
Custom Screw Elements
We provide customized screw elements tailored to your specific material requirements:
Material Selection Guide
| Application |
Recommended Materials |
| Wear Resistance |
W6Mo5Cr4V2 tool steel, WR5, CPM10V, CPM9V PM-HIP materials |
| Corrosion Resistance |
WR13, WR14 alloys |
| Hydrofluoric Acid Resistance |
OS22 (WJ276), HC276 |
| General Purpose |
316L, 440C stainless steels |
Liner Configuration Options
- Single metal liner
- Bimetallic compound liner
- Sintered process composite liner
- Spray welding process composite liner
Bimetallic Compound Liner Advantages
- 600°C temperature resistance
- ≥1.8mm alloy layer thickness
- 57-64HRC hardness range
- Spray welding process ensures superior density
Compatible Extruder Brands
| Clextral |
KraussMaffei |
Leistritz |
| JSW |
Buhler |
Toshiba |
| Coperion |
Berstorff |
Maris |
| KOBE |
Wenger |
CPM |
Manufacturing Capabilities
Our 3000+ square meter facility features:
- Complete production process from R&D to testing
- 6 technical specialists and 40+ skilled workers
- Advanced equipment imported from Taiwan and Germany
Competitive Advantages
- Material Innovation: Proprietary alloy development ensures optimal performance
- Process Optimization: Spray welding replaces sintering for 3-5x lifespan improvement
- Design Enhancement: Oval flat corner geometry extends service life
Frequently Asked Questions
What's your MOQ?
1PC or SET
Can I place customized orders for different sizes, materials, or structures?
Yes, all customized orders are welcomed.
Could I get a QC report before delivery?
Yes, specific QC reports will be provided before shipment.
Can I have our logo or label on the product?
Yes, we can laser engrave your logo or identification codes.
How long is your guarantee?
1-5 years depending on product requirements.
How to contact you for other questions?
Please reach us via email, phone, or factory visit.
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