What is Wet Blasting Machine? What Does It Do?


When it comes to surface preparation and cleaning, sandblasting machines have been a game-changer in various industries. They efficiently remove rust, paint, scale, and other contaminants from a wide range of surfaces. While dry sandblasting has been widely used, there is another technique that offers unique advantages—wet type sandblasting machines. In this blog post, we will explore the features, benefits, and applications of wet type sandblasting machines, and why they are gaining popularity in the industry.

Understanding Wet Type Sandblasting Machines:

Wet type sandblasting machines, also known as slurry or wet abrasive blasting machines, differ from their dry counterparts in the way the abrasive material is propelled. Instead of using compressed air, wet sandblasting machines utilize a mixture of water and abrasive material, creating a slurry. This slurry is then propelled through a specialized nozzle at high pressure, delivering a precise and efficient cleaning process.

Key Features and Components:

  1. Water-Abrasive Mixture: The primary component of wet type sandblasting machines is the slurry, consisting of water and fine abrasive material. The ratio of water to abrasive can be adjusted to suit the specific cleaning requirements, providing flexibility in terms of surface delicacy or aggressiveness.

  2. High-Pressure Pump: Wet sandblasting machines incorporate a high-pressure pump that pressurizes the water-abrasive mixture. This pump ensures a steady flow of slurry to the nozzle, enabling effective surface cleaning and preparation.

  3. Specialized Nozzle: The nozzle of a wet sandblasting machine is designed to handle the slurry flow. It features a venturi effect, which accelerates the slurry to high velocities upon exiting the nozzle. The nozzle design also helps in containing and directing the slurry, minimizing overspray and optimizing the cleaning process.

Benefits of Wet Type Sandblasting Machines:

  1. Reduced Dust and Airborne Contaminants: One of the significant advantages of wet sandblasting is its ability to suppress dust and airborne contaminants. The water component of the slurry traps the particles, preventing them from becoming airborne. This is particularly beneficial in sensitive environments, such as hospitals, food processing facilities, or historical restoration projects, where dust containment is crucial.

  2. Enhanced Safety: Wet sandblasting significantly reduces the risks associated with dust inhalation and exposure to harmful particles. Operators and nearby personnel are protected from the hazardous effects of airborne contaminants, improving overall safety in the workplace.

  3. Minimized Surface Damage: The presence of water in wet sandblasting acts as a cushioning agent, reducing the impact on the surface being cleaned. This makes wet sandblasting ideal for delicate materials, such as wood, glass, or stone, where excessive force could cause damage. Additionally, the water helps in cooling the surface during the cleaning process, preventing thermal stress.

  4. Versatility: Wet type sandblasting machines can be used with a variety of abrasive materials, including silica sand, garnet, aluminum oxide, and glass beads. This versatility allows for effective cleaning and surface preparation across a wide range of applications and materials.

Applications of Wet Type Sandblasting Machines: Wet sandblasting machines find application in numerous industries and sectors, including:

  1. Automotive: Wet sandblasting is commonly used in automotive workshops for the removal of paint, rust, and corrosion from vehicle bodies and components.

  2. Marine: The marine industry benefits from wet sandblasting for cleaning boat hulls, removing barnacles, and preparing surfaces for repainting.

  3. Construction and Restoration: Wet sandblasting aids in the restoration and cleaning of historical buildings, removing graffiti, or preparing surfaces for repointing and refinishing.

  4. Manufacturing: Wet sandblasting can be utilized for cleaning molds, removing burrs from metal components, or preparing surfaces for adhesive bonding in manufacturing processes.


Wet type sandblasting machines offer a range of benefits over their dry counterparts, making them a versatile and effective solution for various industries. By reducing airborne contaminants, minimizing surface damage, and enhancing safety, wet sandblasting machines provide a valuable alternative for surface preparation and cleaning needs. As technology continues to advance, we can expect further refinements and improvements in wet sandblasting equipment, ensuring even more efficient and environmentally friendly operations.