Glass Bead Blasting Abrasive Grit
Glass Beads are a round, spherical media that produce a softer and brighter finish angular medias. Glass Beads are used for blasting, peening, honing, cleaning, and light deburring.
GLASS BEAD BLASTING FOR PRECISION SURFACE PREPARATION AND SMOOTH FINISHING
Glass Bead Blasting is a controlled abrasive process used for cleaning, peening, honing, polishing, and light deburring. Spherical glass particles provide a softer and brighter finish than angular abrasives, making them useful when surface refinement is more important than aggressive cutting.
Kramer Industries offers glass beads in a range of mesh sizes for different surface preparation and finishing requirements. The appropriate grade depends on the substrate, desired finish, level of cleaning, and application requirements.
What Is Glass Bead Blasting Used For?
Glass bead blasting uses spherical glass particles propelled against a surface to clean, smooth, refine, or peen the material. Unlike angular abrasives that aggressively cut into a surface, the round shape produces a more controlled finishing effect.
Glass Bead Blasting is suitable for removing light contamination, discoloration, light coatings, and minor surface imperfections while producing a consistent matte, satin, or bright finish.
Benefits
- Precision Finishing on Metal Parts
- Highly Durable and Reusable
- Round Spherical Shape
- Suitable for Peening Applications
- Available in a Wide Range of Mesh Sizes
- Silica Free
- Produces a Uniform Surface Finish
- Suitable for Cleaning, Honing, Polishing, and Light Deburring
- Can Be Reused in Suitable Blasting Systems
Applications
- Peening and Cleaning of Metal Surfaces
- Surface Preparation
- Food Service, Hospital / Medical, and Engine Blasting
- Honing
- Light Deburring
- Creating a Uniform Surface Finish / Profile
- Paint Additive to Create Reflective Properties
General Applications
Glass beads can also support cleaning, polishing, honing, peening, light deburring, and surface refinement where maintaining the underlying dimensions of a part is important.
Surface Cleaning With Glass Beads
For controlled cleaning and surface refinement, glass bead media provides a softer impact than angular abrasives. Glass Bead Blasting Media is particularly useful when the goal is to remove light contamination while maintaining a smooth, consistent appearance.
Glass bead media can help remove light rust, dirt, oil, discoloration, and other surface contaminants from compatible metals. This makes it suitable for applications where cleaning and appearance are both important.
Choosing the Right Bead Size
Bead size affects cleaning action, surface appearance, and the level of peening produced during blasting. Coarser grades generally provide a stronger impact, while finer grades can produce a smoother and more uniform result.
When selecting glass beads for sandblasting, consider the substrate, condition of the surface, desired finish, blasting pressure, nozzle configuration, and production requirements. The available grades range from extra-coarse to fine sizes for different cleaning and finishing needs.
Surface Finishing With Glass Beads
Glass bead media is particularly useful when the appearance of the finished surface is important. Its spherical shape can produce a bright, matte, or satin-like finish while helping smooth minor surface imperfections.
For stainless steel and other visible metal components, the correct bead size and blasting conditions can help achieve a consistent appearance. Glass beads for sandblasting can also be used where preserving the underlying surface is important.
Stainless Steel and Aluminum Applications
Glass beads can be used on stainless steel and aluminum when controlled cleaning or surface refinement is required. Glass Bead Blasting can remove light contamination and discoloration while helping create a consistent finish without aggressively cutting into the substrate.
The process can also be used for components where preserving the underlying surface is important. The correct operating pressure and bead size should be selected based on the material and desired result.
Reusability and Media Life
One advantage of glass beads is their ability to be reused in suitable blasting systems. Proper recovery and separation equipment can extend media life and help maintain consistent blasting performance.
Glass Bead Blasting is generally performed at controlled pressures to help preserve the spherical media and achieve consistent surface treatment. Actual service life depends on blasting pressure, substrate hardness, equipment configuration, contamination, and the desired finish.
Glass bead blasting abrasive can be recovered and reused when the equipment and application are suitable. The media should be replaced when breakdown or contamination begins to affect performance.
Comparing Glass Beads With Other Blasting Media
Glass Bead Blasting Media provides a different finishing effect from angular abrasives such as garnet, aluminum oxide, or crushed glass. Its spherical shape produces a gentler impact focused on cleaning, smoothing, peening, and surface refinement.
For heavy rust, thick coatings, or aggressive material removal, a harder or more angular abrasive may be more appropriate. For light cleaning and applications where a smooth, uniform finish is desired, glass bead media can provide a controlled alternative.
Industrial Finishing Applications
A glass bead blasting abrasive can be used across industrial finishing processes, including metal cleaning, light deburring, honing, peening, and surface preparation. Kramer Industries offers different grades to help match the abrasive to the substrate and required surface result.
The selected glass bead blasting abrasive should be matched to the material, desired finish, operating pressure, and production requirements. Kramer Industries can help identify a suitable grade based on the application.
Specifications
Glass Bead Specifications |
||
|---|---|---|
Grade |
Average Particle Sizethe smaller the mesh number, the coarser the grit |
Spec Sheet |
| Extra Coarse | 20/30 Mesh (560-850 micron) |  |
| 30/40 Mesh (425-560 micron) | ||
| Coarse | 40/50 Mesh (325-425 micron) | |
| 50/70 Mesh (212-325 micron) | ||
| Medium-Coarse | 60/80 Mesh (165-250 micron) | |
| Medium | 70/100 Mesh (150-212 micron) | |
| 80/120 Mesh(125-165 micron) | ||
| Medium-Fine | 100/170 Mesh (90-150 micron) | |
| 120/200 Mesh (75-125 micron) | ||
| Fine | 140/230 Mesh (65-105 micron) | |
| 170/325 Mesh (45-90 micron) | ||
Glass Bead Specifications
|
||
|---|---|---|
Grade |
Average Particle Sizethe smaller the mesh number, the coarser the grit |
Spec Sheet |
| Extra Coarse | Mil-3 (560-850 micron) | |
| Mil-4 (425-560 micron) | ||
| Coarse | Mil-5 (325-425 micron) | |
| Mil-6 (212-325 micron) | ||
| Medium-Coarse | Mil-7 (165-250 micron) | |
| Medium | Mil-8 (150-212 micron) | |
| Mil-9 (125-165 micron) | ||
| Medium-Fine | Mil-10 (90-150 micron) | |
| Mil-11 (75-125 micron) | ||
| Fine | Mil-12 (65-105 micron) | |
| Mil-13 (45-90 micron) | ||
Note: Images are for comparison purposes only.
Frequently Asked Questions (FAQs)
Q1. Can you use glass beads in a sandblaster?
Yes. Glass beads can be used in compatible blast cabinets and sandblasting equipment. They are commonly selected for cleaning, light deburring, peening, honing, and surface finishing where a smooth and uniform result is required.
Q2. What is the best sandblast media for glass?
For blasting glass itself, the appropriate abrasive depends on whether the goal is cleaning, etching, frosting, or removing material. Glass beads are generally intended for cleaning and finishing compatible surfaces rather than aggressive cutting, so the application and desired result should determine the media selection.
Q3. What is better, blasting media, garnet, sand, or glass beads?
There is no single abrasive that is best for every application. Glass beads are generally suited to cleaning, peening, smoothing, and surface finishing. Garnet can be selected for stronger cutting action, while silica sand is generally avoided because of the health risks associated with respirable crystalline silica.
Q4. Can glass beads be reused for blasting?
Yes. Glass beads can be recovered and reused in suitable blasting systems. Their service life depends on operating pressure, substrate, equipment, contamination, and how much the beads break down during use.
Q5. What finish does glass bead blasting produce?
Glass beads generally produce a smooth, uniform matte or satin-like finish. The final appearance depends on bead size, blasting pressure, distance, angle, substrate material, and the condition of the surface before blasting.
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