Grinding glass bead is made of special glass by smashing and fritting.It has the characteristics of smooth surface,average size,high hardness,anti-friction and stable etc.Widely used in dyestuff,paint,ink,chemical industries etc as dispersing agent,grinding medium and filling materials.
physical properity
Item | Index |
appearance | colorless transparent sphere, smooth and round, no obvious bubbles or impurities |
Roundness | ≥90% |
density | 2.5g/cm3 |
Refractive index | Nd ≥1.50 |
Chemical composition | Soda-lime glass SiO2>68% |
Mohs hardness | 6-7mohs |
Mechanical properties (Compression strength) | 3300kg/cm2 |
Micro hadness (Indentation hardness) | 8000kg/cm2 |
Acid resistance | Weightlessness 0.005mg/cm3 (boiled 4 hours in 20% HCL solution) |
Alkali resistance | Weightlessness 0.3mg/cm3 (boiled 4 hours in 1% NaOH solution) |
Specification
Special size can be made as request.Free samples are available.
NO. | Diameter(mm) |
1 | 0.6-1 |
2 | 1-1.5 |
3 | 1.5-2 |
4 | 2-3 |
5 | 3-4 |
6 | 4-5 |