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Wet blasting, also known as wet abrasive blasting, vapor blasting or dustless blasting, it helps you to prepare the surfaces and remove coatings, contaminants, residues and corrosion.
Abrasive blasting can be divided in two main groups depending on how the blast media is propelled. By air as in dry abrasive blasting or by air/water as in wet abrasive blasting.
The processes are described in more details in ISO 8504.
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What is Wet Abrasive Blast Cleaning?
The „Wet Blasting” is environmentally friendly and highly effective – an industrial process used for various cleaning or finishing applications.
Combines water, compressed air, and abrasive materials while the stream of hard, abrasive particles is propelled at high velocity against the surface to be cleaned.
This technique offers a wide range of benefits compared to traditional dry blasting or sandblasting methods.
APPLICATIONS FOR WET BLASTING
Wet abrasive blast cleaning is used in a wide variety of applications, including:
- Cleaning surfaces to remove rust, paint, graffiti, and other contaminants
- Preparing surfaces for painting, coating, or welding
- Roughening surfaces to improve adhesion
- Shaping surfaces, such as removing excess material or creating a textured finish.
Wet blasting can produce a smoother and more consistent finish than sandblasting.
The slurry left on the surface after blasting should not be allowed to dry. Rinse surfaces promptly after wet abrasive cleaning with fresh water.
SURFACE TYPE AND DESIRED FINISH
The liquid abrasive effect can be precision engineered to produce desired surface profiles and textures.
Wet abrasive blast cleaning is a good choice for delicate surfaces. While sandblasting is better suited for tough surfaces.
Does not remove salt. Will give flash rust.
ADVANTAGES OF WET ABRASIVE BLASTING
- Wet blasting produces significantly less dust.
The wet abrasive blast cleaning method reduces pollution, hazards, and clean up.
- Moreover, wet abrasive blasting delivers a squeaky-clean surface, which is vital for achieving a solid bond between coatings and substrates.
Water improves removal of coatings, mill scale, and rust.
- Wet abrasive blasting prevents heat warping, particularly when working with thin metal surfaces.
COMPARISON: WET BLASTING VS. SANDBLASTING
Blasting, whether it be water or sand, employs a high-pressure system to remove unwanted materials from a surface.
The addition of water in wet blasting dramatically reduces dust particles suspended in the air, enhancing safety and minimising environmental impact.
Wet abrasive blast cleaning eliminates up to 92% of the dust generated by sandblasting, making it a more responsible and sustainable choice.
Yet, the wet blasting can create a mess, so it is important to take steps to protect the work area.
Dry abrasive blast cleaning (sandblasting) erodes the top layer of the substrate, leaving a rough, textured profile for coatings to adhere to.
SURFACE PROFILE
Less Abrasive, water blasting is generally gentler than sandblasting.
DIFFERENCES: WET BLASTING VS. SANDBLASTING
Wet abrasive blast cleaning and dry blasting are very similar methods in that they “process the surface of the object by projecting countless abrasive particles”.
Both utilize high-pressure systems to clean surfaces. They differ greatly in terms of the size of the abrasive that can be handled, residue, processing accuracy, and other aspects.
Since wet blasting uses water, has a high degree of cleaning power, and can handle fine abrasives. While it can perform uniform processing with high precision.
However, the processing power is relatively weak, and it takes time to remove thick paint and such.
Sandblasting, on the other hand, is typically faster.
It is characterized by high processing power because it handles comparatively large abrasives.
The dry abrasive blasting uses compressed air to blast only abrasives without water and generates “dust” that is scattered by the blasted abrasive. It is not good at uniform processing.
In addition, since there is no degreasing effect, separate degreasing and drying processes are required as pretreatments.
INDUSTRIAL – DRY OR WET ABRASIVE BLAST CLEANING?
When you need to remove contaminants, solid particles, or any other type of buildup from a surface, sandblasting (air blasting) is a great option.
The best process for a particular job will depend on a number of factors, including the type of surface being treated, the desired finish, and the budget.
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If you’re looking to clean an engine, prepare a surface for painting, remove paint from a car, or restore a stone or brick surface, wet abrasive blast cleaning is the way to go.
In case sandblasting steel, concrete, stone using a dustless blaster with a containment system is important to protect the workers and those around the job site.
Dustless Blasting is also a great option when you need to remove paint from industrial equipment or clean molds.
In general, sandblasting is a good choice for jobs where speed and cost are important, while wet abrasive blast cleaning is a good choice for jobs where dust control and surface integrity are important.
The industrial sector often uses sandblasting for large-scale projects.
Industries that use abrasive blasting include:
- Shipbuilding
- Oil, Gas and Petrochemical Industries
- Construction and new steelworks
- Metal casting and foundry work
- Automotive repair and restoration
- Monument engraving
- Glasswork
- Other
Choose one of Our Solution for surface treatments which is most appropriate one suitable for your project requirements.