Production of Foundry Sand for Casting
As a new, green sand, foundry sand has attracted much attention since its appearance and solved many problems in the field of casting, the applications of ceramic sand has been rapidly extended for its development and marketing in foundry industry. Ceramic sand has excellent properties, such as near spherical shape, higher refractoriness, good strength, and inert chemical characteristics.
Technical Parameter
1. Main Chemical Element:Al2O3≥75% , Fe2O3≤3%, TiO2≤2.5%, SiO2 ≤17%, other element: Trace amounts;
2. Grain shape: Spherical;
3. Angle Factor: ≤ 1.1, very close to ball shape;
4. Bulk Density: 1.95-2.05 (g/cm3);
5. Refractoriness: ≥1800℃;
6. Thermal Conductivity: 5.27W/M·K(1200℃);
7. Shock Expansion Rate: 0.13% (10 minutes at 1000℃)
8. Particle Size: 0.053mm-2.0mm
Product Data Sheet of Foundry Sand for Casting
Size |
mesh |
10 |
14 |
18 |
26 |
36 |
50 |
70 |
100 |
140 |
200 |
281 |
Pan |
AFS |
μm |
1700 |
1180 |
850 |
600 |
425 |
300 |
212 |
150 |
106 |
75 |
53 |
Pan |
||
AFS20 |
≤5 |
10-30 |
30-50 |
15-35 |
≤5 |
|||||||||
AFS30 |
≤5 |
10-30 |
30-50 |
15-35 |
≤10 |
≤5 |
25-35 |
|||||||
AFS40 |
≤5 |
0-20 |
20-40 |
20-40 |
10-30 |
≤10 |
≤2 |
35-45 |
||||||
AFS50 |
≤3 |
≤15 |
25-40 |
25-45 |
10-20 |
≤10 |
≤5 |
≤3 |
45-55 |
|||||
AFS60 |
≤10 |
10-30 |
30-50 |
15-35 |
0-20 |
≤5 |
≤1 |
55-65 |
||||||
AFS75 |
≤10 |
5-25 |
25-45 |
20-40 |
≤10 |
≤5 |
75-85 |
|||||||
AFS100 |
≤3 |
10-30 |
35-55 |
15-35 |
≤10 |
≤2 |
105-115 |
|||||||
AFS125 |
≤2 |
0-20 |
30-50 |
25-45 |
0-20 |
≤5 |
125-135 |
|||||||
AFS150 |
≤5 |
5-25 |
40-60 |
25-40 |
≤15 |
160-170 |
The advantages of Foundry Sand for Casting
1. The thermal expansion coefficient is small, and its performance is comparable to zircon sand. When the sand is prepared with zircon sand, the casting will not produce expansion defects.
2. The sand is spherical, with good fluidity, easy to be rammed and good air permeability.
3. The surface is smooth and the structure is compact, so that the binder can cover evenly.
Logistics system
Top Chemical cooperates with the world-famous logistics company and has established a sound logistics system, which covers container, bulk-cargo, sea and road transportation. Besides, we have set up branch companies and storage centers in North America, South America and Mid East. Professional sales staff and efficient logistics team provide 24/7 service and ensure that the company's products are sent to the customer's location.
FAQ
Q1: Are you factory or trading company?
A: We are manufacturer have over 10 years’ experience, this company build from our oversea sales department, we do hope to use our professional knowledge and warm service to help you save cost. And you are welcomed to visit our factory anytime.
Q2: How do you ensure the quality of the product?
A: Top Chemical have a very complete quality management system, from the control of raw materials to the factory inspection of finished products. We regularly provide samples to third-party testing organizations for testing.
Q3: What are the advantages of ceramsite(foundry sand)?
A: High thermal conductivity, good stability, no cracking
Q4: What are the applications of Ceramsite(foundry sand)?
A: Ceramsite(foundry sand) has the advantages of high refractoriness, good fluidity and high air permeability, which to a certain extent solves the defects in foundry production( casting cost, defective rate and quality)
Q5: Do you know ceramsite(foundry sand)?
A: Ceramsite (foundry sand) can be used in resin sand (furan resin, phenolic resin), water glass sand (organic grease, CO2 hardening) and coated sand. Suitable for all kinds of metal castings: carbon steel, alloy steel (high manganese steel, high chromium cast iron), cast iron, cast copper, etc.
Q6: How many processes are needed for the finished product of Ceramsite(foundry sand)?
A: Bauxite - simple crushing - electric melting - wind crushing into ball - ball making - Screening - mixing – Ceramsite (foundry sand)
Q7: What the ceramsite(foundry sand) become more and more popular?
A: High fire resistance, easy to collapse. The mullite phase of ceramsite(foundry sand) is much higher than that of sintered product.
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