Products Description
Graphite Beads for Glass Cast Production are high-purity graphite beads specifically designed for glass casting processes, used in high-temperature glass melting, forming, or runner systems.
Products Advantages
High-purity graphite structure: Utilizing ≥99.9% high-purity graphite raw materials and undergoing high-temperature purification, resulting in extremely low impurity content.
Strong anti-adhesion properties: Graphite has low surface energy, making it less prone to adhesion reactions with molten glass, effectively reducing material buildup and slagging.
Dimensional stability: After high-temperature pretreatment and size screening, it has a low coefficient of thermal expansion, making it resistant to deformation over long-term use.
Customizable Options
Diameter Size Customization (e.g., Φ1–50 mm or as per drawing requirements)
Purity Grade Selection (99.5%, 99.9%, Ultra-High Purity)
Surface Finish Customization (Standard Surface / Fine Grinding / Polishing)
Density and Porosity Control
Packaging Customization (Moisture-proof Bags, Ton Bags, Vacuum Packaging, etc.)
Application
Carbon Graphite Material Data Sheet
| W-4 | W-5 | W-6 | W-7 | W-8 | WH-5 | WH-7 | WH-8 | ||
| bulk density | g/cm³ | 1.75 | 1.85 | 1.9 | 1.82 | 1.9 | 1.68 | 1.85 | 1.9 |
| Resistivity | uΩm | 8-11 | 8-10 | 8-9 | 11-13 | 11-13 | 13-15 | 11-13 | 11-13 |
| Thermal conductivity(100℃) | W/m.k | 110-120 | 130-140 | 130-140 | 110-120 | 110-120 | 80-100 | 100-120 | 110-120 |
| Thermal expansion coefficient (room temperature - 600℃) | 10-6/℃ | 5.46 | 4.75 | 4.8 | 5.8 | 5.85 | 5.8 | 5.9 | 5.85 |
| Shore Hardness | HSD | 42 | 48 | 53 | 65 | 70 | 60 | 68 | 72 |
| Flexural strength | Mpa | 38 | 46 | 55 | 51 | 60 | 38 | 62 | 70 |
| Compressive strength | Mpa | 65 | 85 | 95 | 115 | 135 | 80 | 135 | 160 |
| Elastic modulus | GPa | 9 | 11.8 | 12 | 12 | 13 | 8.8 | 12 | 13 |
| Porosity | % | 17 | 13 | 11 | 12 | 11 | 18 | 12 | 11 |
| Ash | PPM | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 |
| Purification of ash | PPM | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| grain size | um | 13-15 | 13-15 | 8-10 | 8-10 | 8-10 | 8-10 | 7 | 5 |
| Application | common use | common use | Continuous casting, sintering, high temperature metallurgy | EDM,Photovoltaic | EDM,Photovoltaic,GLASS | EDM | common use,EDM | EDM,Photovoltaic,GLASS |
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FAQ
Q: Will these graphite spheres contaminate the glass composition?
A: No. The product uses high-purity graphite raw materials and undergoes high-temperature purification treatment, resulting in extremely low metal impurity content. It is suitable for processes with strict requirements on glass purity.
Q: Will it easily pulverize or crack at high temperatures?
A: No. Graphite has a stable crystal structure and exhibits excellent thermal shock resistance after heat treatment, making it suitable for long-term high-temperature operation.
Q: Can it be used in continuous production lines?
A: Yes. The product has stable dimensions and good wear resistance, making it suitable for long-term use in continuous glass production equipment.
Q: Do you support small-batch sampling?
A: Yes. Samples or small-batch orders can be provided to facilitate initial testing and verification for customers.
Q: What is the typical product delivery time?
A: Standard specifications are shipped within 7–15 days; customized specifications typically take 15–25 days, depending on quantity and technical requirements.
Q: Do you provide quality inspection reports?
A: We can provide testing data such as chemical composition, density, and particle size distribution, and support third-party testing.
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