The glass beads, composed of SiO2,Na2O and CaO, are broken and calcined by high temperature after which the said microspheres are obtained. With properties of the high roundness rate, better hardness, excellent anti-friction and direct reflect light ,etc, they are widely applied in the fields of plastic rubber, abrasion ground, blast derusting , road-reflect dope and handicraft lamp, etc
Physical and Chemical performance
| glass ball high precision 2mm-25mm glass ball | |
| Size | 2mm-25mm |
| SiO2 | ≥65% |
| Na2O | ≤14% |
| CaO | ≤8.0% |
| MgO | ≤2.5% |
| Al2O3 | 0.5-2.0% |
| Fe2O3 | ≥0.15% |
| Other | 2.0% |
| Bulk density | 1.5g/cm3 |
| Real Density | 2.5g/cm3 |
| Mohs Hardness | 6-7 |
| HRC hardness | 46 |
| Roundness | ≥92.5% |
| Magnetic | ≤0.1% |
| Bubble | <0.1% |
| Usage | 1,Used in cleaning and metal surface strengthening treatment technology, Used for sandblasting equipment. 2,Used as disperser,grinding media and filter material in day,paint,ink and chemical industry. 3,road marking |
Application
1).Glass beads of low index of refraction are used in road marking. At night, as the vehicles’ headlight beam hits the painted line with glass beads, the beads act as tiny mirrors
reflecting the beam back to the driver’s eyes .Hence guiding him to drive safely. On road marking, NO.1 products are usually used. In mixed use of the different size of the beads, when big beads which are normally on the top are worn out, small beads will come out, thus maintaining the brightness of reflection.
2)Metal cleaning and polishing. Soda-lime glass beads have very stable chemical characteristics and mechanical strength and hardness, so compared with other grinding materials,glass beads have more advantages as follows:
A:Longer life than any other mediums, except metal.
B:No contamination to the processed metal.
C:Quick recovery of its original cleanness and brightness.
D:Quick cleaning while keeping the original processing tolerance.
Packing
