2. Blasting technology
The oldest patent on surface treatment by using abrasives was developed by the chemist Chew Tilghmann from Philadelphia/USA in 1870.
It is possible to shade, tarnish, engrave, etc. iron, metal, glass, wood and many other materials with the help of a sandblaster.
At that time, the shot-blasting wheel was mentioned as well. In Germany, Hans Weber and Karl Grodol from Kronach in Bavaria applied for a patent on the shot-blasting wheel in 1930 which is still used nowadays.
The blasting technology has been used in industry for decades and we cannot image life today without it.
In principal, the blasting technologies differ from each other as regards type and acceleration of the blasting medium.
Airless blast cleaning
During the process of airless blast cleaning the abrasive is accelerated by shot-blasting wheels which are equipped with rocker shovels or respective devices.
Injection blasting
During the process of injection blasting the abrasive is conveyed or accelerated with the help of nozzles through fluid or gaseous carriers. The carrier medium can also lead to cleaning effects.
- Table of contents
- 1. Fields of application of abrasive blasting technology
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2. Blasting technology
- 2.1 Airless blast cleaning
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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
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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