Slurry consists of abrasive particles suspended in a liquid, while air-sand, such as ASTM G76, involves abrasive carried by air. When subjected to erosion at a 90-degree angle, dry sand erosion typically creates a U shape profile whereas slurry erosion is more likely to result in a W shape profile.
Are there any other differences between these two types of erosion? If both tests are conducted under the same parameters (including the same angle, jet velocity, flow rate, nozzle diameter, and stand-off distance), will the materials ranking for erosion resistance generated by the two methods be the same?
Thank you!
Dear Sluury! Abrasion increases when strong wind, water, sand mix. Abrasion area can cover 180 to 360 degrees instead of 90 degrees. If the pressure difference is strong, it can change rapidly.
The main difference between slurry erosion and air-sand erosion lies in the medium through which abrasive particles are transported and the specific conditions under which they occur. Slurry erosion involves abrasive particles suspended in a liquid or slurry, which are then directed at a solid surface. These abrasive particles, often mixed with water or oil, impact the surface and gradually remove material. This phenomenon is commonly encountered in industries such as mining, hydraulic transportation, and chemical processing, where abrasive materials are present in fluid media. On the other hand, air-sand erosion, also known as dry abrasion, involves abrasive particles entrained in a high-velocity gas or air stream. These solid abrasive particles, such as sand or grit, impinge on a solid surface, causing material removal. Air-sand erosion is prevalent in applications like sandblasting, abrasive cutting, and grinding operations, often used for surface preparation, cleaning, or material removal in metalworking, surface finishing, and paint removal tasks. In essence, the key distinction is the carrier medium, with slurry erosion involving a liquid medium and air-sand erosion relying on a gas or air stream to transport abrasive particles.
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