Product introduction of Ceramic Sand AFS62 AFS65 for Foundry As Resin Coated Sand
Ceramic sand for No-bake sand casting is a spherical
shape with a low angle coefficient. The quantity of resin binder required is
lower by using ceramsite sand. The ball shape of ceramic sand makes good
fluidity, which is convenient for the core shooter machine to shoot out the
sand. In addition, ceramic sand is made of calcined bauxite through
high-temperature fusing and blowing. It is dust-free with high refractory
temperature and uniform particle distribution. The Al2O3 content of ceramic
sand is 70%, so ceramic sand has high mechanical strength, which can
effectively prevent casting defects.
2. Typical physical properties of Ceramic Sand AFS35-40 for Carbon Steel Casting
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Refractoriness
|
≥1800 °C
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Mohs hardness
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6.5-7.5
|
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Specific gravity:
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3.4g/cm3
|
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Bulk density(LPD):
|
1.95-2.05 g/cm3
|
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Color:
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black brown
|
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Grit shape:
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spherical Ball
|
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PH value
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7.3
|
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Thermal expansion coefficient
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6x10-6 /°C(20-1000°C)
|
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Thermal conductivity
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0.698W/M.K(1200°C)
|
|
Thermal expansion ratio
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0.13%(10 min at 1000°C)
|
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coefficient of angularity
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≤1.1
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Roundness
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Min 95%
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3. Typical chemical composition of Ceramic Sand AFS35-40 for Carbon Steel Casting
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AL2O3
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72.14%
|
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SiO2
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19.28%
|
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Fe2O3
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2.46%
|
|
TiO2
|
3.32%
|
|
CaO
|
0.28%
|
|
MgO
|
0.33%
|
|
K2O
|
1.25%
|
|
Na2O
|
0.08
|
- Product
Feature of Ceramic Sand AFS35-40 for Carbon Steel Casting
1.
Good flowability and low angularity coefficient
because of the ball shape of ceramic sand.hen working with the core shooter,
the sand is easy to go to small corners. Thus, it will get a smoother casting
surface.
2.
Most of the chemical content of ceramic sand is Al2O3
and SiO2. It has high anti-thermal ability up to 1800°C. There don’t exist acid or alkali in the sand. So it
won’t get a reaction with resins or molten steel. That feature can improve the
surface quality of the casting.
- The
particle size distribution is controlled by the sieving process. Ceramic
sand is artificial foundry sand, so we could control the particle size
distribution to customers’ requirements. And there are fewer fines in the
sand.
- Low
humidity. Ceramic sand is a type of dry sand because it is getting from
fused bauxite without washing process.
- Ceramic
sand is easy to clean up after use and has good anti-sticky sand
performance.
- High
thermal conductivity and good air permeability.
- Low
thermal expansion. That reduces casting cracks caused by sand expansion.
- High
strength. After using, the recycling rate is higher because of low broken
sand.
- Reduce
resin amount than angular shape sand. As a result, it can cut casting
costs in total.
5. Applications of Ceramic Sand AFS35-40 for Carbon Steel Casting：
- Work
with resins such as the furnace, Alkaline-phenolic, water glass for core
making.
- High
alloy cast steel and carbon steel.
- Low
carbon steel and stainless steel valve parts.
- Stainless
steel, manganese steel, high chromium cast iron.
- Product
details of Ceramic Sand AFS35-40 for Carbon Steel Casting
7. Packing of Ceramic sand for No-bake sand casting:
- 1Metric
Ton/Jumbo Bag
- 25KGS/PVC
Bag,40 Bags/Pallet
- Other
customized packages are available
8. FAQ:
Q: Are you a manufacturer?
A: Yes, Our factory was founded in 1999. We are an
experienced manufacturer of foundry ceramic sand.
Q: What are the key quality indexes of ceramic foundry
sand?
A: First of all, the Al2O3 content. We have three
grade:75% Al2O3 ceramic sand,73% Al2O3 ceramic sand,70 Al2O3 ceramic sand.
Secondly, the particle size distribution of ceramic
sand. We will provide samples according to the customer’s requirements. And
make the same particle percentage coincide with confirmed sand.
Q: Where is the nearest port from your factory?
A: Qingdao and Tianjin are both near to us.
Q: What is the HS code of ceramsite sand?
A: Since there is no specific HS code for ceramsite
sand, there are HS codes 69149000 and 68159990 suitable for exporting ceramsite
sand. But with our experience, HS code 68159990 is easier to do custom
clearance with no risk to be inspected.
Q: How do you operate the QC system?
A: Before shipment, we will take 1 day to check the
chemical composition for every bag. Our QC staff will take another day to check
particle size distribution for every bag. We will reserve samples from each
batch production in case there is anything wrong.
Q: What is the lead time for each order?
A: It depends on the quantity and sand size required.
Generally 5-10 days for FCL(20-25MT).
