Graphite Insulation Felt for High Temperature Furnace
Product Overview
Graphite insulation felt is a lightweight, high-performance thermal insulation material used in vacuum and inert gas furnaces. Made from high purity graphite fibers, it provides excellent thermal insulation at temperatures up to 3000C while maintaining low thermal conductivity.
Our graphite felt insulation is available in both soft and rigid forms, custom cut to fit your furnace chamber dimensions. It is widely used in vacuum furnaces, crystal growth furnaces, and semiconductor processing equipment for energy-efficient thermal management.
Key Features
- Excellent thermal insulation with low thermal conductivity
- Maximum temperature up to 3000C in vacuum
- Lightweight compared to refractory brick insulation
- Low heat storage for faster furnace cycling
- Resistant to thermal shock and rapid heating/cooling
- Low outgassing in high vacuum environments
- Chemically inert to most process gases
- Custom thickness and dimensions available
Technical Specifications
| Parameter | Value |
|---|---|
| Material | High Purity Graphite Fiber |
| Carbon Content | 99.9% |
| Density | 0.10 - 0.20 g/cm3 |
| Thermal Conductivity | 0.15 - 0.25 W/m.K (at 1000C) |
| Max Temperature | 3000C (vacuum/inert) |
| Working Temperature | Up to 2600C |
| Available Thickness | 5mm, 10mm, 20mm, 50mm, custom |
| Forms | Soft felt, rigid board, laminated |
| Surface Treatment | As-cut, sealed edges |
Applications
- Vacuum furnace insulation lining and barrel
- Czochralski (CZ) silicon crystal growth furnaces
- Semiconductor diffusion and CVD furnaces
- Photovoltaic diffusion and LPCVD equipment
- Graphite heater support and radiation shielding
- High temperature laboratory research furnaces
Why Choose Jincheng Graphite Felt?
- Precision die-cutting to your exact furnace dimensions
- Multiple density grades for different insulation requirements
- Available with or without SiC coating for improved oxidation resistance
- Fast turnaround: 5-10 days for standard sizes
- Consistent quality and thickness uniformity
- Competitive pricing for both small and large volume orders
- Technical support for furnace insulation design optimization
- Trusted by furnace manufacturers and end-users worldwide
FAQ
Q: What is the typical thickness of furnace insulation?
A: Typical furnace wall insulation uses 50-100mm of graphite felt, with multiple layers for optimal performance.
Q: Can graphite felt be used in air?
A: Graphite felt oxidizes in air above 400C. For air applications, we recommend SiC-coated graphite felt or other refractory materials.
Q: How long does graphite felt last in a vacuum furnace?
A: With proper operation and maintenance, graphite felt insulation can last 3-5 years before needing replacement.
Hot Tags: graphite insulation felt, high temperature insulation, furnace insulation material, graphite felt, thermal insulation, vacuum furnace insulation, carbon fiber felt
