
Rigid Graphite Felt For Industrial Furnaces
Graphite Felt - ideal thermal Insulation Material for Industrial Furnaces Graphite felt is an ideal material for heat insulation in vacuum furnaces and inert gas furnaces. SHJ supplies graphite soft felt with a width of up to 1600mm and a thickness of 5mm or 10mm, while graphite rigid felt can...
Description
Graphite Felt - ideal thermal Insulation Material for Industrial Furnaces
Graphite felt is an ideal material for heat insulation in vacuum furnaces and inert gas furnaces. SHJ supplies graphite soft felt with a width of up to 1600mm and a thickness of 5mm or 10mm, while graphite rigid felt can be up to 2800mm wide, available in both sheet and cylindrical forms. The size and specifications can be customized according to the conditions of use. Our graphite felt can be purified to have a total ash content as low as 20 ppm.
Key Features of Carbon Felt Insulation for Thermal Management
Our PAN-based and Rayon-based graphite felts feature light weight and low thermal conductivity, while also possessing high tensile strength, high tensile modulus, low density, high temperature resistance, ablation resistance, and corrosion resistance. In addition, they are characterized by high electrical conductivity, low thermal expansion, and self-lubricating properties. Therefore, they are the optimal heat insulation materials for industrial furnaces.

1. Exceptional Heat Resistance
Carbon felt insulation can withstand temperatures as high as 3000°C without breaking down, making it perfect for high-heat environments like vacuum furnaces, heat treatment, and solar photovoltaic applications.
2. Low Thermal Conductivity
With its low thermal conductivity, carbon felt helps reduce energy loss and maintains stable temperatures. This makes it invaluable in electronics manufacturing and semiconductor production, where precision temperature control is essential.
One of the key benefits of carbon felt is its ability to handle sudden temperature changes without cracking or losing its shape. This is particularly useful in industries like welding, soldering, and automotive manufacturing, where rapid temperature fluctuations are common.
Carbon felt insulation is highly adaptable, available in a range of shapes including sheets, cylinders, and 3D forms. This flexibility allows it to be tailored to fit the needs of various applications, from vacuum chambers to high-temperature exhaust linings.
Naturally resistant to many acids, alkalis, and organic solvents, carbon felt is well-suited for environments where exposure to harsh chemicals is common. This makes it a solid choice for industries like semiconductor manufacturing, where materials are exposed to aggressive gases during processing.
Applications for Graphite Felt
Graphite felt, as an effective high-temperature insulation material, is particularly effective for induction furnaces or furnaces using cylindrical hot zones.
Specific applications include single crystal furnaces, carbonization furnaces, quartz furnaces, vacuum furnaces, heat balance reaction furnaces, heat treatment furnaces, sintering furnaces, welding furnaces, and high-pressure furnaces in metallurgy, machinery, and chemical industries. It can also be used as a filtering material for high-purity corrosive chemical reagents.

TAICHIRON@ Series rigid & Soft insulation
Thermal Insulation Rigid Felt
| Product | Bulk Density | Compressiv Strength |
e Thermal Conductivity (@1000℃) |
Ash Purification |
Maximum Operating Temperature |
| PAN-Based | 0.16g/cm³ | 0.25MPa | 0.35W/(m.k) | ≤20ppm | ≥2000℃ |
| PAN-Based | 0.2g/cm³ | 0.35MPa | 0.3W/(m.k) | ≤20ppm | ≥2000℃ |
| Viscose-Based (Long Fiber) |
0.18/cm³ | 0.25MPa | 0.3W/(m.k) | ≤20ppm | ≥2200℃ |
| Viscose-Based (Short Fiber) |
0.15/cm³ | 0.25MPa | 0.25W/(m.k) | ≤20ppm | ≥2200℃ |
Thermal Insulation Soft Felt
| Product | Bulk Density | Thermal Conductivity (@1000℃) |
Ash Purification |
Operating Temperature |
Available Sizes |
| PAN-Based | 0.13g/cm³ | 0.2W/(m.k) | ≤20ppm | ≥2000℃ | 10x1200*20000mm 5x1200*20000mm |
| PAN-Based | 0.15g/cm³ | 0.15W/(m.k) | ≤20ppm | ≥1800℃ | 3x1500*20000mm 10x1200*20000mm |
| Viscose-Based | 0.12/cm³ | 0.13W/(m.k) | ≤20ppm | ≥2200℃ | 3x1200*27000mm 5x1200*27000mm 10x1200*27000mm |
*The above values, sizes are typical, not guaranteed.
*The parameters in this table are standard products.
If high purity products are required, purification treatment can be provided, with a purified ash content of < 20PPM maximum.
Special needs and high-end series products can be customized through negotiation and communication with our company.
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