HVOF Tungsten Carbide Coated Screw Flight – Ultimate Wear Solution for Extreme Abrasion

Product Overview

The HVOF Tungsten Carbide Coated Screw Flight represents the pinnacle of wear-resistant technology for screw conveyors and augers. Utilizing High-Velocity Oxygen Fuel (HVOF) thermal spray coating technology, Jiahe Conveying Equipment Technology Co., Ltd delivers an ultra-durable solution that outperforms conventional hardfacing and ceramic alternatives in the most demanding abrasive applications.

Key Advantages

1. Unmatched Wear Resistance

• Tungsten Carbide (WC-Co) Coating: 88-92% WC content with cobalt binder provides HV 1100-1400 (HRC 70-75) hardness

• Dense Coating Structure: <2% porosity ensures maximum protection against micro-abrasion

• Superior to Hardfacing: 3-5x longer lifespan than chromium carbide hardfacing in equivalent conditions

2. Precision-Engineered Performance

• Controlled Coating Thickness: 0.1-0.5mm (±0.02mm tolerance) maintains flight geometry

• Optimized Surface Finish: Ra 0.8-1.6μm reduces material buildup by 30-40%

• Thermal Stability: Maintains properties from -50°C to 540°C (special formulations to 800°C)

3. Corrosion & Chemical Resistance

• Excellent pH Resistance: Performs in both acidic (pH 2+) and alkaline (pH 12-) environments

• Salt Spray Resistance: 1000+ hours ASTM B117 testing for marine applications

• Oxidation Resistance: Protective cobalt matrix prevents degradation in high-temp environments

4. Customizable Solutions

• Graded Coatings: Transition layers prevent delamination (ASTM C633 adhesion >70MPa)

• Pattern Application: Selective coating of high-wear zones for cost optimization

• Post-Coating Finishing: Grinding/polishing available for critical clearance applications

Technical Specifications

Performance Comparison

Applications

Mining & Mineral Processing

• Iron ore pellet conveyors (Abrasion index >0.8)

• Copper concentrate handling

• Tailing sand dewatering screws

Cement Industry

• Clinker cooler screws

• Raw mill feed systems

• Cement mill discharge conveyors

Power Generation

• Bottom ash conveyors (Abrasive + thermal cycling)

• FGD gypsum handling

• Biomass fuel systems

Specialty Applications

• Salt and potash processing

• Recycling plant shredder feeds

• Dredging equipment components

Installation & Maintenance Benefits

• Precision Balanced: Dynamic balancing available for high-speed applications (>100 RPM)

• Field-Repairable: Localized HVOF recoating possible without full disassembly

• Non-Destructive Testing: Coating quality verified by ultrasonic thickness measurement

• Compatibility: Can be applied to new or refurbished flights

Why Choose Jiahe's HVOF Coated Screw Flights?

✔ Industry-Leading Expertise: 15+ years in thermal spray applications for conveying systems
✔ Proven Performance: Documented 18-24 month ROI in cement and mining applications
✔ Full-Certification: ISO 9001, ISO 14001, and PED compliant manufacturing
✔ Application Engineering: CFD modeling available for wear pattern optimization

For operations where maximum wear resistance and minimum downtime are critical, our HVOF Tungsten Carbide Coated Screw Flights deliver unparalleled performance and cost efficiency. Contact our technical team for wear analysis and application-specific solutions.