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Product Details:
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| Model No.: | NFS20-25~NFS55-60 | Expansion Coefficient: | 6X10-6 /ºC(20-1000ºC) |
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| Conductivity: | 0.698W/M.K ( 1200ºC) | Type: | Recycling Material |
| Angularity: | Max 1.12 | Feature: | Low Crushing Ratio |
| High Light: | Foundry Ceramsite Sand,AFS Resin Coated Silica Sand,SGS Resin Coated Silica Sand |
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1. Ceramic Foundry Sand Introduction
Our high quality Ceramisite sands are made by fusing, spraying, sieving and purifying high Alumina Calcined Bauxite. They can be used in casting all sizes of steel parts. The spherical shape produces high density material with excellent flow characteristics. The main chemical composition is Al2O3 which provides an excellent refractoriness and stability.
Size: NFS25-35; NFS25-30; NFS30-35; NFS35-40; NFS40-45; NFS45-50; NFS40-50; NFS50-55; NFS55-60; NFS60-65.
2. Ceramic Foundry Sand Specifications
| Sand Type | Linear thermal expansion | ||
| 20 – 300ºC | 20 – 600ºC | 20 – 800ºC | |
| Silica | 14.0 | 23.0 | 17.0 |
| Chromite | 7.1 | 7.5 | 7.5 |
| Zircon | 3.4 | 4.1 | 4.5 |
| Cerabeads | 3.5 | 4.0 | 4.3 |
| Ceramsite | 7.1 | 7.3 | 7.2 |
| Al2O3 | 78-86% |
| SiO2 | 8-13% |
| Fe2O3 | 3.5% (max) |
| TiO2 | 3.5% (max) |
| Refractoriness | 1850C (3362F) |
| Angle Coefficient | 1.1 (max) |
| Thermal Expansion (at 100°C) | 0.15 |
| Thermal Conductivity | 0.196 W/m.K |
| Specific Heat | 873 J/kg |
| Bulk Density | 1.9-2.2 g/cm3 |
| pH Value | 7.65 |
| Shape | Solid Sphere |
| Binder Content Required | 3-4% |
| Crushability | 113 |
3. Ceramic Foundry Sand General advantages
4. Ceramic Foundry Sand Particle Size Distribution
| TYPICAL CHEMICAL ANALYSIS | |
| AL2O3 | 70-75% |
| SiO2 | 8-20% |
| Fe2O3 | ≤3% |
| TiO2 | ≤3.5% |
| CaO | ≤0.45% |
| MgO | ≤0.35% |
| K2O | ≤0.33% |
| Na2O | ≤0.08% |
| TYPICAL PHYSICAL PROPERTIES | |
| Refractoriness | ≥1800 ºC |
| Specific gravity: | 3.4g/cm3 |
| Bulk density(LPD): | 1.95-2.05 g/cm3 |
| Color: | black brown |
| Grit shape: | spherical ball |
| Thermal expansion coefficient | 6x10-6 /ºC(20-1000ºC) |
| Thermal conductivity | 0.698W/M.K(1200ºC) |
| Thermal expansion ratio | 0.12% |
| Angularity | ≤1.1 |
| Available sizes | |
| AFS15-20,AFS 15-25,AFS25-35,AFS25-30,AFS30-35,AFS35-40,AFS40-45,AFS45-50,AFS40-50,AFS50-55,AFS55-60,AFS60-65,AFS60-70,AFS70-80,AFS95-110 Customized sizes are available upon request | |
5. Ceramic Foundry Sand Applications
Some Resin coated sand makers has add part of ceramiste as the raw material to obtain higher refractoriness, low expansion, easy to diffuse, higher strength and also to make special shape.
Contact Person: Jason Chen
Tel: 86-18603794999
