Nozzle Material Comparison
Common Materials
| Material | Hardness | Life | Application |
|---|---|---|---|
| Ceramic | HV 800-900 | 20-40 hours | Light blasting, fine treatment |
| Boron Carbide | HV 2000-2500 | 200-400 hours | Heavy blasting, intensive work |
| Silicon Carbide | HV 1500-1800 | 80-150 hours | Medium blasting, general use |
| Steel | HRC 50-60 | 50-100 hours | Light-duty blasting, budget-sensitive |
Selection Tips
- High-frequency operation: Choose boron carbide nozzle, longest life, lowest total cost
- Intermittent operation: Ceramic or silicon carbide offer better value
- Budget limited: Steel nozzle meets basic needs
Bore Size Selection
Nozzle bore determines abrasive flow and jet velocity:
| Bore(mm) | Flow(kg/min) | Equipment |
|---|---|---|
| 4-6 | 5-15 | Small portable blasters |
| 8-10 | 15-30 | Medium blast cabinets |
| 12-15 | 30-60 | Large blast rooms |
| 18+ | 60+ | Heavy industrial systems |
Selection Principles
- Larger bore = more flow, but higher air consumption
- Match bore to max particle size, typically 3-4x diameter
- Bore wears larger over time, needs regular check
Nozzle Shape
Straight Bore
- Features: Simple structure, low cost
- Effect: Concentrated jet, strong impact
- Use: Spot blasting, small areas
Venturi Nozzle
- Features: Accelerates airflow, increases velocity
- Effect: Wide coverage, high efficiency
- Use: Large area blasting, quick cleaning
Fan Nozzle
- Features: Fan-shaped spray pattern
- Effect: Wide coverage width, flat surfaces
- Use: Plate, wall blasting
Maintenance
Wear Assessment
- Replace when bore wear exceeds 10% of original size
- Visible deformation at nozzle exit
- Noticeable efficiency drop
Usage Tips
- Regularly check nozzle wear
- Keep nozzle clean, avoid clogging
- Select material based on work intensity
- Keep backup nozzle inventory
Product Recommendation: We offer various sand blasting nozzles in boron carbide, silicon carbide, and multiple bore sizes.
