glass blasting media have many different roles in coatings, including wear resistance, sound and heat insulation, stable chemical properties and mechanical strength, scratch resistance, corrosion resistance, improve coating leveling, increase the reflectivity of the coating and so on.
glass blasting media
The use of glass blasting media in coatings:
Glass beads are applied to architectural coatings. It can improve the durability and crack resistance of coatings.
At the same time, the effect of heat preservation is also extremely obvious, and the sound insulation effect is also very good.
Glass beads are needed in some special coatings, such as reflective coatings and thermal insulation coatings. In thermal insulation coatings, it can reduce the heat transfer and greatly improve the insulation of the coating.
What Are Bead Blasting’s Applications?
| Aerospace industry | Remove rust and paint from mechanical components to remove knife marks. |
| Remove scratches on the rubber | Reflective paint for roads |
| Scratch treatment on the surface of stainless steel. | |
| Foundry industry; | Pre processing in the electroplating industry. |
| Semiconductor Industry | Crafts for exterior decoration |
glass blasting media
Glass blasting media can improve the weather resistance of the coating, because of its stable chemical properties, when it is added to the coating, the properties are always consistent and stable, which also extends the service life of the coating.
At the same time, glass blasting media has corrosion resistance, after the glass beads are added, the coated items are not easy to rust, it has a very good protective effect.
Applications in the fields of road marking, automotive coatings, aerospace, etc., all stem from the above performance advantages of glass beads. In short, glass beads are a heat-insulating, reflective, weight-reducing and pressure-resistant material.
Here we will do a detailed analysis of each property in the following:
1. Improve the abrasion resistance of coatings: glass beads can improve the abrasion resistance and service life of coatings. Because glass beads have very high hardness and abrasion resistance. 2. stable chemical properties: because glass beads have very high hardness and abrasion resistance.
2. stable chemical properties: because the chemical properties of glass beads are extremely stable, so in various applications glass beads will not react with other chemical components, to maintain the consistency and stability of chemical properties.
3. Improve the mechanical strength of the coating: After adding glass beads to the coating, the mechanical strength is improved, which makes the coating stronger and able to withstand a certain amount of stress.
4. Increase the scratch resistance of the coating: after adding glass beads to the coating, it can produce certain significance, which makes the scratch resistance improved and the coating tougher.
5. Increase corrosion resistance: glass beads added to the paint coating, can realize the resistance to acid, alkali, salt and other chemical properties of the erosion .
6. Improve the reflective properties of the coating: In some road marking paint and airport runway marking, the reflective properties of glass are needed. The addition of glass beads makes the coating more reflective.
7. Improvement of anti-settling and leveling properties. After adding glass beads, the structure of the coating is more solid, the leveling is also improved, and the whole coating is more uniform and stable.
8. Increase the gloss and surface effect of the coating, the refractive property of glass beads also makes the coating become more glossy.
9. Improve the adhesion of the coating.
In the actual application of glass beads, the size of glass beads should be strictly selected and the ratio of the glass beads used, which will directly affect the performance of the final coating.
Size of glass beads for blasting
Model of Bead blasting glass | Sieve Size (mesh) | Particle Size Range(μm) |
WSL17L# | 20~40 | 425 ~ 850 |
WSL 18L# | 30~40 | 425 ~ 600 |
WSL 19L# | 40~60 | 300 ~ 425 |
WSL 20L# | 60~100 | 150 ~ 300 |
WSL 21L# | 70~140 | 106 ~ 212 |
WSL 22L# | 100~140 | 106 ~ 150 |
WSL 23L# | 100~200 | 75 ~ 150 |
WSL 24L# | 140~200 | 75 ~ 106 |
WSL 25L# | 140~270 | 53 ~ 106 |
WSL 26L# | 200~325 | 45 ~ 75 |
Specification of Bead blasting glass
| Specific gravity | 2.4-2.6 g/m3 |
| Stacking density | 1.5g/cm3 |
| Type | Blasting / Shot Peening Media |
| Spherical | |
| Rockwell hardness: | 46HRC |
| Mohs | 6-7 |
| Round rate | 80% |
| Melting point | 710-730 ℃ |
| Index of refraction | 1.5—1.6 |
The quality inspection of glass beads usually includes the following aspects of standards:
The inspection of glass beads includes particle size, shape, density, surface finish, transparency, chemical stability, mechanical strength, refractive index, impurity content, and dimensional tolerances.
1. Particle size distribution: In this test, we always require the uniformity of glass beads in the context. It can be tested according to the minimum particle size, maximum particle size and some specific ranges of particle size.
2. Sphericity: The standard glass for its shape is spherical, in the shape of the particles we require a standard test results are particles close to the sphere. Geometric characteristics, scanning to determine the measurement results.
3. Density: the density of glass beads will be directly related to its mechanical strength and stability. We can choose the density meter to test its density.
4. Transparency can be examined by optical microscope and optical test equipment.
5. chemical stability is one of the most important aspects, usually the scope of the test includes corrosion test and immersion test.
6. The test of impurity content can prove whether the glass beads are qualified or not as an index, which can be tested by spectrometer. It directly affects the stability of the performance of glass beads.
7. Refractive index test: Refractive index is a representative index to prove whether the performance of glass beads is good or not. Optical equipment can be used to test its refractive index.
8. surface finish, in addition to the naked eye to detect it, but also need to choose the microscope and other instruments to measure.
In addition to the above tests, we should also test its mechanical strength and dimensional tolerances. The above tests will have a direct impact on whether the glass beads are qualified, and whether the performance can fully meet the user’s needs Glass beads in coatings
