Uneven Blasting Results – Common Causes and Solutions
In professional blasting technology, achieving a uniform blasting result is crucial for the quality of the subsequent coating. However, in practice, uneven surface appearances often occur – due to material defects, unsuitable settings, or improper handling.
Common Causes of Uneven Blasting Results
- Incorrect blasting pressure: Too high or too low working pressure leads to uneven roughness or material removal.
- Unsuitable abrasive: Grain size, hardness, and cleanliness of the abrasive directly affect the blasting result.
- Nozzle wear: Worn blasting nozzles alter the spray pattern and create uneven textures.
- Irregular blasting movement: An inconsistent distance or uneven nozzle movement causes visible streaks.
- Moisture in the abrasive: Condensation in the air supply or damp abrasives reduce efficiency and uniformity.
Practical Tips for Improvement
- Regularly check and calibrate blasting pressure.
- Use clean, dry, and suitable abrasive for the desired surface profile.
- Replace worn blasting nozzles in time to maintain a consistent spray pattern.
- Train operators in optimal nozzle handling and maintaining constant working distance.
- Use moisture separators or air dryers in the compressed air supply.
