AFS45 AFS35 Ceramic Foundry Sand Sphere Shape Bauxite Foundry Sand
1. Ceramic Foundry Sand Introduction
Bauxite Foundry Sand (SuperSand) is a spherically shaped bauxite sand manufactured by melting bauxite in an Electric Arc Furnace followed by a proprietary spraying process. SuperSand beaded foundry sand provides a unique combination of spherical shape grain, chemistry, and physical properties that result in numerous performance advantages compared with other foundry sands. Our Ceramic Foundry Sand performs very well comparatively to Chromite, and Zircon sands and has replaced these sands and Silica sand in many foundry and casting applications. The grain surface is much smoother than other foundry sands, leading to better castings.
2. Ceramic Foundry Sand Specifications
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Shape: Sphere
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Angle Factor: ≤1.15
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Bulk Density: 1.95-2.05 (g/cm3)
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Refractoriness: ≥1790℃
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Thermal expansion: 0.14% (10 minutes under 1000℃)
-
Main Chemical composition (typical value as following table):
|
Unit |
Al2O3 |
SiO2 |
Fe2O3 |
TiO2 |
CaO |
MgO |
K2O |
Na2O |
|
% |
75.37 |
17.72 |
2.15 |
3.23 |
0.43 |
0.35 |
0.33 |
0.08 |
3. Ceramic Foundry Sand General advantages
- Solid sphere: The shape of Ceramsite is spherical with smooth surface and less surface area and offering a very good flowability and filling ability. To compare with other sands else, less binder is used at the same mold strength and higher venting ability. It also offers the excellent collapsibility.
- Lower thermal expansion rate: It makes the dimensions of castings better, less crack and defect and higher output.
- Lower breakage rate: Ceramsite has a higher density and a very lower breakage rate at the reclaimation. It makes a better reclamations rate to reduce the waste sand and the pollution.
4. Ceramic Foundry Sand Particle Size Distribution
The particle size distribution can be custom-made according to any customer’s specific requirement.
|
Code |
1700 |
850 |
600 |
425 |
300 |
212 |
150 |
106 |
75 |
53 |
Pan |
|
|
20-40 |
|
15-40 |
30-55 |
15-35 |
≤3 |
|
|
|
|
|
|
15-25 |
|
30-50 |
|
≤10 |
25-45 |
35-55 |
5-15 |
≤5 |
≤2 |
|
|
|
|
25-29 |
|
40-70 |
|
|
≤10 |
25-45 |
20-40 |
5-25 |
≤7 |
≤5 |
|
|
|
35-39 |
|
40-100 |
|
|
≤3 |
10-25 |
25-40 |
25-45 |
10-25 |
≤10 |
≤5 |
|
|
45-55 |
|
50-100 |
|
|
|
≤10 |
10-30 |
30-50 |
15-35 |
≤15 |
≤5 |
≤2 |
≤1 |
55-65 |
|
50-140 |
|
|
|
≤8 |
10-25 |
20-45 |
20-45 |
5-20 |
≤7 |
≤2 |
≤1 |
60-70 |
|
70-140 |
|
|
|
|
≤10 |
10-25 |
25-45 |
15-35 |
≤15 |
≤5 |
≤2 |
75-85 |
|
100-200 |
|
|
|
|
|
≤3 |
10-35 |
35-55 |
15-35 |
≤10 |
≤5 |
95-115 |
|
140-270 |
|
|
|
|
|
|
≤5 |
5-25 |
40-60 |
25-40 |
≤15 |
155-175 |
|
6-20 |
LFC Casting Ceramsite |
|
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5. Ceramic Foundry Sand Application Area and its advantage compare to traditional casting sand
|
Applications |
Grit Size |
AFS SIZE |
|
Foundry sand for Lost foam |
8-15#(10#)10-20#,20-30# |
AFS25-35 |
|
Filler sand |
30# |
|
|
No bake sand including furan resin /alkaline-phenolic resin molding and core making/ Pep set /Sodium-silicate bonded sand |
30-50#,40-70#,50-70#,70-140# |
AFS35-45,AFS25-35,AFS45-55, AFS55-65,AFS60-70,AFS70-80 |
|
Shell molding, resin coated sand casting |
50-100#,70-140#,100-200# |
AFS55-65,AFS60-70,AFS70-80, AFS95-110 |
|
Lost foam casting coating |
140-270#,-200# |
|
|
Molding sand alcohol-based coating |
-200# |
|
|
3D printing, precision casting, investment casting |
-140# |
|
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