Sintered Ceramic Sand Factory in China Leading Suppliers for Cold Box Process
Our Sintered Ceramic Sand is a high-performance molding material specifically engineered for the cold box process, where resin sand is instantaneously hardened at room temperature via gas or aerosol catalysis (such as the triethylamine method). Specifically designed for demanding diesel engine castings—including cylinder blocks, cylinder heads, and intake/exhaust pipes—this ceramic sand overcomes the inherent limitations of traditional silica sand, such as excessive thermal expansion and poor dimensional stability.
By integrating our sintered ceramic sand into your production line, either as a primary material or mixed with silica sand, foundries can achieve a 20-30% reduction in resin consumption. This advanced material significantly minimizes casting defects such as veins, false shots, and fractures, while providing superior collapsibility that drastically reduces the workload 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 |
| Sand PH Value | 6.6-7.3 | Mineralogical Composition | Mullite + Corundum |
| Acid Cost | ＜1 ml/50g | L.O.I. (Loss on Ignition) | ＜0.1% |
Key Advantages
Defect Elimination
Significantly reduces the probability of veins, fractures, and pores compared to traditional scrubbed or baked sands.
High Efficiency
Optimized for cold box processes with short mold-drawing times and high instantaneous hardening speed.
Cost Reduction
Reduces resin additive requirements by 20-30%, lowering raw material costs per casting.
Superior Collapsibility
Easier sand removal after casting, drastically reducing cleaning labor and processing time.
Precision Control
Spherical grain shape and tight angular coefficients ensure exceptional flowability and surface finish.
Customizable Grading
Available in multiple AFS grain sizes (from 40 to 110) to match your specific core requirements.
Product Gallery
Management Platforms
Material Logistics
Streamlined supply chain for consistent ceramic sand delivery and inventory control.
Process Optimization
Expert guidance on mixing ratios (Ceramic + Silica) to maximize casting quality.
Quality Assurance
Rigorous testing for chemical purity, PH value, and grain distribution.
Technical Support
Dedicated engineering support for troubleshooting cold box resin catalysts.
Custom Formulation
Tailored particle size distributions (AFS) to suit specific part geometries.
Efficiency Tracking
Monitoring reduction in defect rates and resin consumption for ROI analysis.
Investment Return Comparison
| Raw Sand Type | Vein Defect Rate | Total Defect Rate |
|---|---|---|
| Sintered Ceramic Sand | 0% | 2% |
| Scrubbed Sand | 28% | 47% |
| Baked Sand | 24% | 39% |
| Ceramic + Scrubbed | 12% | 19% |
| Ceramic + Baked | 7% | 14% |
Frequently Asked Questions
Ceramic sand has a significantly lower thermal expansion coefficient compared to silica sand. This prevents the expansion-induced stress that typically causes veins and fractures in complex diesel engine castings.
Yes, it is fully compatible with standard cold box resin forming processes, including those using triethylamine gas catalysts and phenolic-urethane resins.
Mixing allows foundries to balance cost and quality. Even a partial replacement of silica sand reduces resin consumption and significantly lowers defect rates compared to using 100% silica sand.
Due to its excellent collapsibility, the sand core breaks down more easily after casting, which reduces the mechanical effort and time required for casting cleaning (shakeout).
We offer a wide range of AFS sizes including 40/70, 50/100, 70/140, and 100/200. We can also customize the distribution to meet your specific cross-sectional area requirements.
Using our sintered ceramic sand typically reduces the required amount of resin by 20% to 30%, providing a direct reduction in operational expenditures.
