High-Temp Resistant Cordierite-Mullite Kiln Furniture (1300℃) - Custom Support Plates For Ceramic/Glass Kilns

1. Product Overview

This Cordierite-Mullite Kiln Furniture is manufactured via advanced processes to balance "thermal stability" and "load-bearing capacity":

Raw Material Blending: High-purity cordierite powder (purity ≥98%), mullite aggregates (particle size 0.1-3mm), and trace fluxing agents (MgO/CaO customizable) are mixed uniformly to control thermal expansion and enhance sintering activity;

Precision Molding: The mixture is pressed into blanks via 1000-1500 tons hydraulic presses-supporting flat plates, grooved shelves, or special-shaped props-with dimensional tolerance ±0.3mm to fit standard kiln cavities;

High-Temp Sintering: Sintered in roller kilns at 1350-1450℃, forming a dense cordierite-mullite interlocking structure that reduces porosity (apparent porosity ≤18%) and improves impact resistance;

Surface Finishing: Post-sintering grinding ensures surface flatness Ra ≤2μm, avoiding product scratches during ceramic/glass firing.

Unlike traditional alumina kiln furniture, its cordierite component significantly lowers thermal expansion-reducing cracking risk by 70% in frequent heating/cooling cycles. The product is supplied in customizable shapes (flat plates, U-shaped props, grid shelves) and standard colors (yellow), packaged in fumigated wooden boxes (5-10 pieces/box) to prevent collision damage during transportation.

 

2. Key Features

Exceptional Thermal Shock Resistance: Thermal expansion coefficient 1.5-2.5×10⁻⁶/℃ (1/3 of alumina kiln furniture), withstands 1100℃→room temp water quenching ≥50 cycles-ideal for kilns with rapid heating/cooling programs (e.g., ceramic fast-firing kilns).

Reliable High-Temp Load-Bearing: Working temp ≤1300℃, cold bending strength ≥15MPa, high-temp bending strength (1300℃) ≥8MPa-supports loads up to 50kg/m² without deformation, suitable for stacking ceramic green bodies or glass workpieces.

Low Contamination Risk: High-purity raw materials (Fe₂O₃ ≤0.5%, SiO₂ customizable) ensure no heavy metal migration-avoids staining ceramic glazes or glass products, meeting food-grade ceramic production standards.

Full Customization Adaptability: Supports size customization (max size 1200×800mm, thickness 5-50mm) and shape customization (grooves, holes, notches) via 2D/3D drawings-matching special kiln layouts (e.g., tunnel kiln car shelves, batch kiln partitions).

Long Service Life: Dense cordierite-mullite structure resists erosion from kiln atmospheres (e.g., reducing gases, steam) and wear from workpiece friction-service life 2-3 years (2× longer than clay kiln furniture) in 1200℃ regular use.

 

3. Technical Parameters

Parameter	Specification
Product Name	Cordierite-Mullite Kiln Furniture
Main Composition	Cordierite (2MgO·2Al₂O₃·5SiO₂) + Mullite (3Al₂O₃·2SiO₂), Al₂O₃/CaO/MgO/SiO₂ customizable
Working Temperature	≤1300℃
Refractoriness	1580-1770℃ (Medium Refractory)
Thermal Expansion Coefficient (Room Temp-1000℃)	1.5-2.5×10⁻⁶/℃
Thermal Shock Resistance (1100℃→RT, water quenching)	≥50 cycles
Cold Bending Strength	≥15MPa
High-Temp Bending Strength (1300℃)	≥8MPa
Apparent Porosity	≤18%
Bulk Density	2.1-2.3g/cm³
Color	Yellow (customizable)
Custom Size Range	Length/Width: 100-1200mm; Thickness: 5-50mm
MOQ	1 piece (standard); 100 pieces (custom shape/size)

 

4. Application Scenarios

Ceramic Industry:

Ceramic firing kilns: Flat support plates for tile/greenware stacking (withstands 1200-1300℃), grooved shelves for hollow ceramic products (avoids deformation), U-shaped props for separating layers-ensuring uniform heating and no product sticking.

Sanitary ware kilns: Large-size grid shelves (1000×800mm) for bathroom basin firing, low thermal expansion prevents shelf warping from uneven heat.

Glass Industry:

Glass annealing kilns: Heat-resistant props for supporting glass sheets during cooling (1100-1200℃), smooth surface avoids glass scratches;

Art glass kilns: Custom-shaped shelves (e.g., curved) for 3D glass product firing, matching complex workpiece contours.

Electronic Component Industry:

Sintering furnaces for ceramic capacitors/resistors: Small-size precision plates (100×100mm) with holes for airflow, high purity prevents component contamination-ensuring electrical performance stability.

Special Materials Industry:

Powder metallurgy sintering kilns: High-load-bearing shelves (supports 80kg/m²) for metal powder compacts, resistance to reducing atmospheres (e.g., hydrogen) without structural damage.

 

5. Service & Support

Customization Service:

Shape/size: Accepts 2D/3D drawings for custom flat plates, grooves, holes, or special structures (e.g., L-shaped props), 3 days to confirm sample designs;

Composition: Adjusts cordierite/mullite ratio (3:7 to 7:3) or adds SiC for enhanced wear resistance (MOQ 500 pieces);

Logo/packaging: Prints customer logos on products (MOQ 100 pieces), customizes wooden box labels (no extra cost).

Pricing & Discounts:Tiered factory pricing: 1-10 pieces ($10/piece), 11-50 pieces ($8/piece), 51-1999 pieces ($6.20/piece), ≥2000 pieces ($3.99/piece); $80 off for $1000+ orders, long-term customers enjoy 5% annual rebate.

Samples & Quality Assurance:Free 1-piece standard sample provided (customer covers shipping); each batch undergoes testing (thermal expansion, bending strength, porosity) with CE/ISO test reports; 1-year warranty (free replacement for cracking/deformation caused by product defects).

Delivery & Logistics:Delivery time: 1-10 pieces (15 days), 11-50 pieces (18 days), 51-100 pieces (25 days), >100 pieces (negotiable); packaging: fumigated wooden boxes (shock-absorbing foam inside); supports Qingdao/Tianjin port sea freight (FOB/CIF) or DHL/FedEx for samples, full logistics tracking.

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