What Are the Properties of Blasting Media?

Sands used for blasting must have certain properties. Here are the properties blasting media generally have:

1. Hardness: Blasting media must be hard enough to work the surface and remove contaminants. Hardness allows the grains to act on the material.

2. Fracture resistance: Because blasting media are used repeatedly, they must have sufficient fracture resistance. Media that resist breaking for a long time last longer.

3. Grain shape: Blasting media generally have round or sharp grains. Round grains are usually less abrasive and give lower surface roughness. Sharp grains have a more aggressive effect and give higher roughness.

4. Grain size: Blasting media can have different grain sizes. Grain size affects the aggressiveness of blasting and the surface roughness. Smaller grains are generally preferred for finer, more delicate work, while larger grains are used for stronger, more aggressive work.

5. Flowability: The flowability of blasting media is important for using them efficiently in blasting equipment. A free-flowing structure lets the media flow smoothly without clogging.

6. Cleanliness: Blasting media must be clean so that they do not further contaminate the surface being worked. Preventing contaminants from being carried onto the surface with the media is important for a successful process.

Blasting media are selected according to the type of material being worked, the desired results and the blasting equipment. Media with different properties may be preferred for each application. Choosing the right media for the blasting process is therefore important.