The carbon carbon insulation tube CFC cylinder is used in the production of single crystal silicon rods in the solar industry and semiconductor industry to protect the insulation layer from silicon vapor corrosion.
The main use of CFC cylinder are:
1. Reduce heat loss in the thermal field of single crystal silicon furnace or polycrystalline silicon furnace, and play a role in heat preservation and insulation;
2. Play a protective role in the thermal field of single crystal furnace, reduce the probability of carbon adhesion and corrosion, and further ensure the smooth progress of single crystal silicon pulling in single crystal furnace;
3. Support the guide tube and other related components in the single crystal furnace.
The key features of VET Energy’s CFC cylinder:
1. Adopting mature multi-dimensional weaving technology, the whole system is composed of electric carbon elements. Since carbon atoms have strong affinity with each other, they have good stability at low or high temperatures. At the same time, the essential property of high melting point of carbon material gives the material excellent heat resistance, and it can be used for a long time at 2500℃ in protective atmosphere.
2. Excellent high temperature mechanical properties, it is currently the best material with high temperature mechanical properties in inert atmosphere. More importantly, its strength does not decrease with the increase of temperature, and is even higher than that at room temperature, which is unmatched by other structural materials.
3. It has a light specific gravity (less than 2.0g/cm3), good anti-ablation performance, small thermal expansion coefficient, good thermal shock resistance, no cracking when used in rapid heating or cooling environment, and long service life.
VET Energy is specialized in high-performance carbon-carbon composite (CFC) customized components, we provide comprehensive solutions from material formulation to finished products manufacturing. With complete capabilities in carbon fiber preform preparation, chemical vapor deposition, and precision machining, our products are widely used in semiconductor, photovoltaic, and high-temperature industrial furnace applications.
Technical Data of Carbon-Carbon Composite |
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| Index | Unit | Value |
| Bulk density | g/cm3 | 1.40~1.50 |
| Carbon content | % | ≥98.5~99.9 |
| Ash | PPM | ≤65 |
| Thermal conductivity (1150℃) | W/m.k | 10~30 |
| Tensile strength | Mpa | 90~130 |
| Flexural Strength | Mpa | 100~150 |
| Compressive strength | Mpa | 130~170 |
| Shear strength | Mpa | 50~60 |
| Interlaminar Shear strength | Mpa | ≥13 |
| Electric resistivity | Ω.mm2/m | 30~43 |
| Coefficient of Thermal Expansion | 106/K | 0.3~1.2 |
| Processing Temperature | ℃ | ≥2400℃ |
| Military quality, full chemical vapor deposition furnace deposition, imported Toray carbon fiber T700 pre-woven 3D needle knitting. Material specifications: maximum outer diameter 2000mm, wall thickness 8-25mm, height 1600mm | ||
