Carbon Fiber Pre-Oxidation Tunnel Furnace
Category：Tunnel Oven Production Line
Introduction
The Carbon Fiber Pre-Oxidation Tunnel Furnace is a core and critical piece of equipment in carbon fiber production lines, specially designed for the staged thermal stabilization (pre-oxidation) treatment of polyacrylonitrile (PAN)-based precursor fibers.Through precisely controlled multiple independent temperature zones, a highly uniform hot air circulation system, and strict exhaust extraction design, the equipment enables precursor fibers to undergo chemical cross-linking under specific temperature and tension conditions. The linear molecular structure is transformed into a heat-resistant ladder-like six-membered ring network structure, laying a solid foundation for the subsequent high-temperature carbonization process.
Applications
Precursor Fiber Thermal Stabilization:
Converts PAN-based precursor fibers into non-melting and flame-resistant oxidized PAN fibers.
Aerospace and Defense Applications:
Used for producing high-performance carbon fibers applied in aircraft structural components, missile casings, and satellite components.
Automotive Lightweight Applications:
Used for carbon fiber material modification and large-scale production of automotive body structures, chassis components, and composite parts.
Wind Power and Pressure Vessel Manufacturing:
Used for manufacturing large-tow carbon fiber materials for wind turbine blade beams and high-strength composite pressure vessels such as hydrogen storage cylinders.
Product Parameters
| Parameter | Technical Specifications |
|---|---|
| Working Temperature | 180℃ ~ 350℃ |
| Temperature Control Accuracy | ±0.5℃ |
| Temperature Uniformity | ≤ ±1.0℃ |
| Hot Air Velocity | 0.5 ~ 2.5 m/s (Continuously Adjustable) |
| Heating Zones | 4 ~ 8 Independent Temperature Control Zones (Customized according to process requirements) |
| Conveying Speed | 0.5 ~ 15 m/min |
| Exhaust Extraction Capacity | Customized according to total tow quantity and exhaust requirements |
Features
Uniform Temperature Control:
The unique double-side/top hot air circulation design ensures extremely low temperature differences throughout the furnace chamber, preventing local overheating of precursor fibers.
Precise Tension Control:
Integrated advanced unwinding and traction tension control systems effectively suppress fiber shrinkage during the pre-oxidation process.
Explosion-Proof Safety:
Equipped with multi-point exhaust gas concentration monitoring and independent extraction systems to promptly remove harmful and combustible gases generated during the reaction.
Energy Efficient Operation:
Uses high-density composite insulation materials combined with heat recovery technology to significantly reduce energy consumption during operation.
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