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Silicon Carbide Foam Filter with Extreme Temperature Resistance, Exceptional Strength, and Superior Thermal Shock Resistance for Foundry Applications

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Silicon Carbide Foam Filter with Extreme Temperature Resistance, Exceptional Strength, and Superior Thermal Shock Resistance for Foundry Applications

Brand Name : KEGU

Packaging Details : Strong wooden box for Global shipping

Delivery Time : Negotiable

Payment Terms : L/C,D/A,D/P,T/T,Western Union,MoneyGram

Usage : Industry Usage

Chemical Composition : Al2O3, SiO2

Sic Content : 85%

Maximum Temperature : 1600℃

Characteristics : High wear resistance

Thermal Expansion Coefficient : 4.0-4.5 × 10^-6 /K

Material Composition : 4%Si >96%Sic

Working Temperature : 1650

Advantage : Wear and abrasion resistance

Purity : 98%

Material : Silicon Carbide Ceramic

Acid Alkaline Proof : excellent

Solubility : Insoluble

Open Porosity : <0.1%

Flexural Strength : 350-550 MPa

MOQ : Negotiable

Model Number : Customizable

Place of Origin : China

Price : Negotiable

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Silicon Carbide Foam Filters: Superior Strength for Demanding Applications
Silicon carbide foam filters represent the premium choice for foundries requiring exceptional thermal and mechanical performance. With outstanding thermal shock resistance and high-temperature stability, they excel in challenging applications where other materials fail. Engineered with an advanced ceramic-bonded SiC structure, these filters provide unmatched durability and filtration consistency, making them the trusted solution for high-volume production and critical casting components.
Distinctive Features
Extreme Temperature Resistance
Stable up to 1530°C in reducing atmospheres, with excellent structural integrity maintained through repeated thermal cycles. This ensures reliable performance in continuous casting operations and high-temperature holding applications.
Exceptional Strength
25% higher compressive strength than standard alumina filters, capable of withstanding metal heads up to 600mm without deformation. The reinforced cellular structure prevents cracking during installation and throughout the casting process.
Superior Thermal Shock Resistance
Withstands temperature differentials exceeding 800°C without spalling or cracking. This unique property allows for pre-heating flexibility and ensures consistent performance even with variable pouring temperatures.
Excellent Corrosion Resistance
Performs exceptionally well with aggressive slags and fluxes commonly used in iron and copper alloys. The chemically inert surface prevents reaction with molten metals, ensuring pure filtration without contamination.
Versatile Applications
Specifically engineered for demanding foundry environments including ductile iron, gray iron, malleable iron, and select steel alloys. Also compatible with high-temperature copper alloys and nickel-based superalloys.
Enhanced Durability
Longer service life compared to traditional ceramic filters, with some applications allowing for limited reuse in non-critical casting processes, providing better cost efficiency over time.
Technical Specifications
Parameter Specification Advantage & Technical Insight
Material Composition SiC with specialized ceramic bonding phase Optimized silica-based bonding creates a cohesive network that enhances structural integrity while maintaining open porosity. This proprietary formulation prevents filter breakdown under thermal stress.
Color Dark Gray to Black Distinct visual identification allows for easy quality control and differentiation from other filter types in inventory management.
Max Operating Temp ≤1500°C (short-term peaks to 1530°C) Ideal for cast iron (1350-1450°C), copper alloys (1100-1300°C), and some stainless steel applications. Maintains dimensional stability throughout the casting temperature range.
Porosity 80-90% (controlled pore distribution) Maintains excellent metal flow rates (typically 1-2 kg/cm²*s) while providing thorough filtration. The uniform pore structure ensures consistent filtration efficiency across the entire filter area.
Density 0.45-0.65 g/cm³ Robust yet porous structure provides optimal strength-to-weight ratio. This density range ensures sufficient mechanical strength without compromising filtration capacity or causing excessive heat absorption.
Compressive Strength ≥1.0 MPa (typical range 1.0-1.8 MPa) Withstands higher metal heads and turbulent flow conditions. This strength level is particularly beneficial in automated pouring systems and high-pressure casting applications.
Thermal Conductivity 15-25 W/m*K (high for ceramic materials) Reduces thermal gradients within the filter, minimizing thermal stress and preventing crack initiation. This property contributes to the exceptional thermal shock resistance.
Chemical Resistance Excellent (especially to acidic slags) Resists attack from common foundry slag components including silica, alumina, and basic oxides. This chemical stability ensures consistent filtration performance without degradation.
Thermal Expansion Coefficient 4.5-5.5 * 10⁻⁶/°C Low expansion rate minimizes dimensional changes during heating, ensuring proper fit in filter holders and preventing leakage around filter edges.
Filtration Efficiency >90% for inclusions >0.1 mm Effective removal of non-metallic inclusions, deoxidation products, and slag particles. The three-dimensional network traps particles throughout the filter thickness, not just on the surface.
Standard PPI Options 10, 20, 30 PPI 10 PPI for high-flow applications with large inclusions; 20 PPI for balanced performance; 30 PPI for maximum filtration of fine particles in critical applications.
Custom PPI Availability 5-40 PPI range Available for specialized applications requiring specific flow characteristics or filtration requirements.
Advanced Technical Notes
Structural Characteristics
The silicon carbide foam filter features an interconnected, three-dimensional strut network with controlled wall thickness and pore window size. This unique architecture provides:
  • Multi-stage filtration: Progressive trapping of inclusions throughout the filter depth
  • Minimal flow restriction: Optimized hydraulic diameter maintains metal velocity
  • Increased surface area: Approximately 2000-4000 cm²/cm³ for effective inclusion capture
Performance in Special Conditions
  • Under Reducing Atmospheres: Maintains strength and stability up to 1530°C
  • With Flux Additions: Resists chemical attack from common foundry fluxes
  • In Continuous Operations: Suitable for extended use in automatic pouring systems
Quality Assurance Parameters
  • Uniformity of Pore Structure: ≤10% variation across filter surface
  • Dimensional Tolerance: ±0.5mm on standard sizes
  • Defect Rate: <0.5% visual and structural defects
  • Batch Consistency: Certified material properties for every production lot
Need Technical Consultation or Samples?
Our engineering team can provide specific recommendations for your alloy type, casting method, and quality requirements. Contact us for application analysis and customized solutions.

Product Tags:

Extreme Temperature Resistance Silicon Carbide Foam Filter

      

Exceptional Strength SiC Foam Filter

      

Superior Thermal Shock Resistance Ceramic Foam Filter

      
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