- Reflective Material[10]
- Crystal[5]
- Traffic Signal[1]
- Pigment[3]
- Cobbles & Pebbles[1]
- Billboards[6]
- Garden Ornaments[1]
- Abrasives[2]
- Other Chemicals[1]
- Paint & Coating[1]
- Chemical Product Machinery[1]
- Contact Person : Mr. Li Gang
- Company Name : Jinan Great Material Co., Ltd.
- Tel : 86-531-88580380,13706417022
- Fax : 86-531-88580380
- Address : Shandong,Jinan,308#, 44 wen hua xi lu , Jinan
- Country/Region : China
- Zip : 250012
Glass Bead with Free Alkali
Grinding Glass Bead with High Hardness
1. The chemical composition is inert silicon dioxide, having no chemical activity and free from any interference;
2. Spherical particles can resist impact resistance and can be recycled for many times, with less wear;
3. Having small wear for the sprayer, which can prolong the service life of the nozzle;
4. After being treated, the workpiece surface is smooth and is especially beautiful, which improves the product value;
5. Suitable for dry and wet-type sandblasting operation;
6. Metal micro-cracks can be easily revealed after being sandblasted with fine glass beads;
7. The ball will not damage the machined surface and precision size;
8. The processed workpiece has lusterless effects and highlights the original metal color; it is rust-proof, without the need for acid rust treatment;
9. Nonalkali glass microbead has higher hardness and the number of repeated use is much more than common
micro-beads and the grain size can be much smaller, suitable for polishing treatment of precision equipment.
Purpose:
1. Polish aviation parts, relieve stress to improve anti-fatigue strength and reduce friction and wear;
2. Sandblasting for removing rust, paint, carbon deposition and machining marks;
3. Pre-treatment before anodizing and plating to increase adhesive force besides cleaning;
4. Clean the weld bead of stainless steel workpiece and remove surface scratches;
5. Clean and remove rust for wire-cutting die;
6. Remove dirt for rubber die;
Chemical Composition:
Program | SiO2 | Al2O3 | CaO | MgO | Na2O | K2O | B2O3 | Fe2O3 |
HM-BEAD | 72% | 2.1% | 7.0% | 3.0% | 13.8% | 0.9% | -- | 0.2% |
HE-BEAD | 54% | 14.6% | 16.6% | 4.6% | <0.5% | <0.3% | 8.8% | <0.5% |
Physical Specs
HM-BEAD | HE-BEAD | |
Hardness1 (kgf/mm2) | 425 | 540 |
Hardness2 (Mohs) | 6.5 | 7.5 |
Abrasion (%) | 3.14 | 1.96 |
Specific Gravity(20/20ºC) | 2.52 | 2.62 |
Compressive Strength | 16.64 | 21.51 |
Refractive Index | 1.5-1.64 | 1.5-1.6 |
Specific Heat (cal/g ºC) | 0.81 | 1.92 |
Thermal Conductivity (kcal/m.hr. ºC | 0.65 | -- |
Softening Point(ºC) | 720 | 840 |
Thermal Expansion Coefficient (ºC) | 8.5×10-6 | 4×10-6 |
Resistence to weather | No change | No change |
Note: HE Bead means Non-Alkali glass microbead
HM Bead means ordinary glass mircobead
Packing:
1.Using double-deck package, the inner is polythene film and its thickness is not less than 0.5mm,the outer is craft paper bag to
prevent leak or damp. The net weight of each bag is 25±0.2kg.
2.According to clients' requirement.
Glass Bead with Free Alkali