SUNTHERM High-Hardness Ceramic Fiber Board

Featuring a dense structure, high mechanical strength, and easy processability, high-hardness ceramic fiber board is widely used in various high-temperature industrial kilns, thermal equipment, and insulation systems. It is particularly suitable for applications that require high dimensional stability and structural strength in insulation materials.

Product Structure and Manufacturing Process

High-hardness ceramic fiber board is produced using raw materials such as high-purity alumina and aluminum silicate through a wet vacuum forming process. It undergoes multiple steps including drying, cutting, and polishing to form a uniform and smooth rigid panel. Depending on actual needs, reinforcing fibers or specific binders can be incorporated to enhance mechanical properties and environmental adaptability.

Product Advantages

High-Temperature Structural Stability: Maintains shape stability under prolonged high-temperature conditions, resisting deformation or pulverization.

Excellent Thermal Insulation Performance: Low thermal conductivity effectively reduces heat loss and improves equipment energy efficiency.

High Strength and Erosion Resistance: Offers strong resistance to wind erosion, making it suitable for high-speed airflow environments.

Flexible and Easy Processing: Supports various processing methods such as sawing, cutting, drilling, and grinding, facilitating on-site installation and adaptation.

Good Chemical Stability: Resistant to acid and alkali corrosion, suitable for industrial environments with complex chemical atmospheres.

Safe and Eco-Friendly: Asbestos-free, non-toxic, and harmless, compliant with EU ROHS, REACH, and other environmental standards.

Typical Application Scenarios

Industrial kiln linings (e.g., metallurgical furnaces, heat treatment furnaces, glass melting furnaces)

High-temperature hot air duct linings

Backing insulation systems for thermal equipment

Sealing structures for furnace doors and covers

Insulation layers for power boilers

Fireproof insulation layers for flue ducts

Fire door cores and building fireproof partition systems

Installation Guidelines for Ceramic Fiber Boards

To ensure the safe and effective performance of ceramic fiber boards in providing thermal insulation and structural support in high-temperature equipment, please strictly adhere to the following installation instructions and precautions:

1. Pre-Installation Preparation

01 Material Inspection

Verify that the board specifications, thickness, and dimensions comply with the design requirements.

Inspect the boards for integrity, ensuring no cracks, delamination, or significant damage.

02 Substrate and Environmental Requirements

The installation surface must be flat, clean, dry, and free of oil, rust, or loose debris.

Metal furnace shells must undergo pre-welding, rust removal, and anti-corrosion treatment.

03 Tool Preparation

Recommended tools include electric or pneumatic cutting tools (e.g., tile saws, angle grinders) paired with specialized ceramic fiber cutting blades.

Prepare personal protective equipment such as dust masks, safety goggles, and gloves.

2. Key Installation Steps

01 Cutting and Processing

Ensure the board is securely held during cutting. Advance the cutting tool slowly along the marked lines to prevent edge chipping.

For drilling, use low-speed electric drills and support the back of the board to avoid splitting.

02 Fixing Methods

Typically, a combination of welded anchors and mechanical compression is used for fixation.

Anchors (e.g., ceramic cups, anchor pins) should be evenly spaced, usually 200–300 mm apart.

For multi-layer installations, stagger the seams to prevent thermal bridging through continuous gaps.

03 Joint Treatment

Ensure tight fitting between boards. Larger gaps should be filled and sealed with ceramic fiber blankets or slurry.

For high-temperature zones (>1000°C), use high-temperature adhesives to enhance joint sealing.

04 Thermal Expansion Allowance

Boards expand slightly when heated. Leave an appropriate expansion gap during installation (typically 1–2 mm).

For large-area installations, consider segmented expansion joints.

3. Safety and Operational Guidelines

01 Personnel Protection

Always wear dust masks (recommended N95 or higher) and safety goggles during cutting and grinding.

Avoid direct skin contact with fiber debris and wash thoroughly after work.

02 Working Environment

Maintain good ventilation in the work area to reduce dust accumulation.

Open flames are strictly prohibited at the construction site. Keep away from high-temperature sources such as welding sparks.

03 Prohibited Operations

Do not step on unfixed boards to prevent breakage.

Avoid striking the board surface with hard objects to prevent structural damage.

4. Post-Installation Inspection

01 Visual Inspection

Check for flat installation, secure anchoring, and complete sealing of joints.

Ensure there are no visible gaps or uncovered areas.

02 Kiln Drying Recommendations

Before initial use, follow a gradual heating curve to avoid cracking due to rapid temperature changes.

It is advisable to extend the holding time at the 300–600°C stage to allow adhesives to fully cure.

5. Special Notes

Ceramic fiber boards are hard but brittle. Handle with care during transportation and store vertically.

For corrosive atmospheres, choose reinforced boards with corresponding chemical stability.

For complex structures or irregular shapes, consult our technical team to confirm the installation plan before proceeding.

If you require installation drawings, construction videos, or on-site technical support, please feel free to contact us. We will provide professional solutions to ensure the safe and efficient operation of your system.

FAQ

Q1: What is the maximum temperature ceramic fiber boards can withstand?

A1: Our product series covers long-term operating temperatures ranging from 1050°C to 1350°C. We recommend selecting the appropriate model based on actual working conditions, including maximum furnace temperature, thermal shock frequency, and atmospheric conditions, to ensure safe service life.

Q2: What are the advantages of ceramic fiber boards compared to traditional insulation materials?

A2: Ceramic fiber boards offer superior overall performance in high-temperature environments: lower thermal conductivity for reduced heat loss, higher temperature resistance for harsher conditions, better mechanical strength for resistance to airflow erosion and vibration, and enhanced structural stability after installation.

Q3: Do ceramic fiber boards comply with environmental and safety standards?

A3: Yes. Our products strictly adhere to environmental requirements, contain no harmful substances such as asbestos, and comply with international standards like EU ROHS and REACH. We also offer boards made with bio-soluble fiber formulations to further meet high safety and environmental demands.

Q6: What special precautions should be taken during the installation of ceramic fiber boards?

A6: During installation, ensure the substrate is clean and flat, use specialized anchors for fixation with even force distribution, and employ professional dust-control tools for cutting. Operators must wear protective masks and goggles. For multi-layer installations, stagger the seams and leave appropriate expansion gaps. Detailed installation guidelines are available in our technical manual upon request.

Q7: How can I determine if ceramic fiber boards need replacement?

A7: Consider replacement under the following conditions: extensive cracking, delamination, or structural loosening; severe surface pulverization leading to noticeable thinning; signs of melting or severe erosion on the hot surface; or a significant decline in insulation performance with a continuous increase in backside temperature. Regular inspections are recommended, especially under harsh operating conditions.

If you require product selection, customization, or sample testing, please feel free to contact the SUNTHERM Engineering and Technical Team. We will provide professional product solutions and comprehensive technical support tailored to your specific working conditions

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