The reason why sandblasting garnet is better than emery

1. The garnet sand has a hard texture, the Mohs hardness is about 7.5, and the Vickers hardness is greater than 1.079 * 104MPa. It is higher in hardness than commonly used sandblast materials such as quartz sand, sea sand, and river sand, and has a long service life.
2. After the garnet sand is sandblasting, it is easy to form particles with angular and approximate cubes, which can completely remove the rust, oxide scale and coatings on the metal surface and the pollutants. Due to the high hardness, it can already be The surface of the metal has a desired angular rough surface, which increases the surface area of the metal and improves the adhesion of the interface, so that the adhesion between the corrosion-resistant protective coating and the metal surface is significantly enhanced, so that the high coating and the metal Surface adhesion properties.
3. The density is large, usually around 4.2g / cm3, the impact is strong, and the metal surface can be cleaned better.
4. Garnet sand is an abrasive without free silicon, which will not cause silicosis.

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