Having understood the advantages of blasting media garnet abrasive compared to other abrasives, and its applications in sandblasting, how can we determine the quality of blasting media garnet abrasive?
1. Comparison of Mineral Sand Colors
Blasting media garnet abrasive itself is purplish-red or brownish-red in color. The presence of green, grayish-white, or black substances indicates impurities. The amount of impurities reflects the purity of the blasting media garnet abrasive.
2. Comparison of Washing Effects
Take a transparent glass cup, add a 30-gram sample of blasting media garnet abrasive, and add 80 milliliters of water, approximately a sample volume to water ratio of 1:4. After stirring, observe whether the water is cloudy. If it is slightly whitish, it indicates that the blasting media garnet abrasive has a low clay content and has undergone a washing process; if the solution is grayish, it indicates a slightly higher clay content and that the washing process was not very thorough; if the solution is yellowish or very cloudy, it indicates a poor washing process or even no washing at all.
3. Comparison of Surface Effects After Sandblasting
If there are too many impurities, the sandblasted surface will have discolored patches or spots, the surface will not be smooth, and the surface roughness will be uneven. If anti-corrosion coating is applied later, the adhesion of the coating will be uneven, which can easily lead to peeling of the coating and accelerate the corrosion and oxidation of the product.
