Premium Sintered Ceramic Sand Factory High Precision Foundry Suppliers in China
Our Sintered Ceramic Sand is specifically engineered for high-precision foundry applications utilizing the cold core box method. By integrating advanced mullite and corundum compositions, this premium ceramic sand provides an exceptional alternative to traditional silica sand, particularly for complex diesel engine castings such as cylinder blocks, heads, and intake/exhaust pipes. It is designed to be catalyzed instantaneously at room temperature via the triethylamine method, ensuring rapid production cycles and superior mold stability.
By implementing sintered ceramic sand, foundries can significantly reduce resin consumption by 20-30% while eliminating common casting defects like veins, fractures, and false shots caused by the thermal expansion of silica. The result is a high-efficiency forming process characterized by shorter mold-drawing times, lower energy consumption, and excellent collapsibility, which drastically reduces the labor required for post-casting cleaning and finishing.
Detailed Parameters
| Main Chemical Component | Al₂O₃≥53%, Fe₂O₃＜4%, TiO₂＜3%, SiO₂≤37% | Grain Shape | Spherical (Angular Coefficient ≤1.1) |
|---|---|---|---|
| Particle Size Range | 45μm - 2000μm (Customizable) | Refractoriness | ≥1800℃ |
| Bulk Density | 1.5-1.6 g/cm3 | Thermal Expansion (RT-1200℃) | 4.5-6.5x10-6/k |
| Color / pH Value | Sand Color / pH 6.6-7.3 | Mineralogical Composition | Mullite + Corundum |
| Acid Cost | ＜1 ml/50g | L.O.I. | ＜0.1% |
Key Advantages
Defect Reduction
Eliminates veins and reduces fractures in complex diesel engine castings compared to silica sand.
High Efficiency
Shortens mold-drawing time and increases production throughput in cold box processes.
Cost Optimization
Reduces required resin addition by 20-30%, lowering overall raw material expenditure.
Superior Refractoriness
Withstands temperatures up to 1800℃, ensuring stability in high-heat casting environments.
Easy Cleaning
Excellent collapsibility simplifies the removal of sand cores, reducing cleaning workload.
Custom Granulometry
Particle size distribution is fully customizable from AFS 43 to AFS 110 based on client needs.
Product Gallery
Management Platforms
Material Purity
Strict control of Al₂O₃ levels to ensure high refractoriness and chemical stability.
Sphericity Control
Maintaining an angular coefficient ≤1.1 for optimal flowability and packing.
Strength Testing
Rigorous 2h tensile strength tests to ensure core structural integrity.
Gas Evolution Monitoring
Minimizing gas evolution to prevent pores and blowholes in final castings.
Size Distribution
Precision screening across multiple mesh sizes for customized AFS requirements.
Thermal Analysis
Continuous monitoring of expansion coefficients to ensure dimensional accuracy.
Investment Return Comparison
| Sand Type | Tensile Strength (1.5% Resin) | Gas Evolution (ml/g) |
|---|---|---|
| Sintered Ceramic Sand | 2.098 MPa | 10.34 ml/g |
| Scrubbed Sand | 1.105 MPa | 13.4 ml/g |
| Baked Sand | 1.088 MPa | 12.9 ml/g |
| Ceramic + Scrubbed | 1.815 MPa | 12.5 ml/g |
| Ceramic + Baked | 1.851 MPa | 12.35 ml/g |
Frequently Asked Questions
The primary advantage is the significantly lower thermal expansion, which eliminates "veins" in castings and reduces the total defect rate from nearly 47% (with scrubbed sand) to just 2%.
Yes, it can be mixed with scrubbed or baked sand. This approach still offers significant improvements in tensile strength and a reduction in casting defects compared to using raw silica sand alone.
Using our sintered ceramic sand typically reduces the amount of resin required by 20% to 30%, leading to lower operational costs.
Absolutely. We offer a wide range of distribution codes (e.g., 40/70, 70/40, 50/100) and can customize the AFS number to meet your specific molding requirements.
It provides excellent collapsibility, meaning the sand core breaks down more easily after casting, which significantly reduces the labor and time needed for casting cleaning.
It is ideal for complex diesel engine components such as cylinder blocks, cylinder heads, and intake/exhaust pipes where precision and low defect rates are critical.
