1. Fields of application of abrasive blasting technology
There are various fields of application in Abrasive Blasting Technology:
- cleaning
- roughening
- hardening
- surface finishing
Cleaning
Cleaning generally means to blast oxidized, coated or otherwise contaminated surfaces. It aims at uncovering the base material.
Roughening
Blasting for the purpose of roughening is applied in order to achieve an enlargement of the surface. An enlargement of the surface leads to better sticking of adhesive and coating materials on the base material. In addition, roughening of the surface results in a higher friction coefficient with other surfaces (the surfaces are becoming more slip-resistant).
Hardening
Blasting to harden surfaces is applied at highly stressed components at which an induction of plastic surface deformation generates internal stress. This internal compression stress shall improve the fatigue limit properties of the component.
Surface finishing
Here the workpiece is treated to reach a better visual feeling. Certain patterns are applied (glass areas, shower cabinets, etc.) and spurious reflecting spaces are tarnished. The used abrasive is decisive for reaching a respective result.
- Table of contents
- 1. Fields of application of abrasive blasting technology
-
2. Blasting technology
- 2.1 Airless blast cleaning
-
2.2 Injection blasting
- 2.2.1 Compressed air blasting (also air blast cleaning or sand blasting)
- 2.2.2 Pressure blasting (injector blasting)
- 2.2.3 Vacuum-compressed-air blasting and vacuum injection blasting
- 2.2.4 Damp blasting
- 2.2.5 Wet blasting
- 2.2.6 Slurry blasting
- 2.2.7 Ice Blasting
- 2.2.8 Water- jetting cleaning and hydro-jetting
- 2.2.9 Wet blasting for fine surface treatment
- 2.2.10 Combination of different blasting methods
- 2.3 Laser cleaning
- 3. Abrasive
- 4. Efficiency assessment of abrasive blasting
- 5. Influence of compressed-air blasting on the surface of the workpiece
- 6. Generation of compressed air
-
7. Plants for compressed-air blasting
- 7.1 Small and medium-sized blasting pots
- 7.2 Large blasting pots
- 7.3 Double-chamber blasting pot
- 7.4 Mixing and dosing valve
- 7.5 Hoses, lengths of hoses, couplings
- 7.6 Selection of a blasting pot in considering the wear and tear behaviour
- 7.7 Increased wear and tear at the blasting pot caused by wrong adjustment
- 8. Remote control and emergency shut-downs
- 9. Jet nozzles
- 10. Stationary blasting halls
- 11. Mobile abrasive blasting equipment
- 12. Laws and provisions