| Quantity (tons) | 1 - 100 | > 100 |
| Lead time (days) | 7 | To be negotiated |
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.
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composition
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content
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shape
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Spherical,round ball
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Al2O3
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70-75%
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color
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Brown,black-brown,taupe
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SiO2
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8-20%
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Refractoriness
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2050℃
|
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Fe2O3
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≤ 3%
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Liner thermal expansion
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(20-1000 ℃) 6 × 10-6/℃
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TiO2
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≤ 3.5 %
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Bulk density
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1.95 -2.05g /cm3
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CaO
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≤ 0.45 %
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Ture density
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3.4g /cm3
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MgO
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≤ 0.35 %
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thermal conductivity
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(1200 ℃)5.27W/M•K
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|
K2O
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≤ 0.33%
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Size range
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6-320mesh
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Na2O
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≤ 0.08 %
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PH value
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7-8
|
|
1
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Good flowability and low angularity coefficient because of the ball shape of ceramic sand.When working with the core shooter, the sand is easy to go to small corners. Thus, it will get a smoother c asting surface.
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2
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Most of the chemical content of ceramic sand is Al2O3 and SiO2. It has high anti-thermal ability up to 1800℃. 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. |
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3
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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. |
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4
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Low humidity. Ceramic sand is a type of dry sand because it is getting from fused bauxite without washing process.
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5
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Ceramic sand is easy to clean up after use and has good anti-sticky sand performance.
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6
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High thermal conductivity and good air permeability.
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7
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Low thermal expansion. That reduces casting cracks caused by sand expansion.
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8
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High strength. After using, the recycling rate is higher because of low broken sand.
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9
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Reduce resin amount than angular shape sand. As a result, it can cut casting costs in total.
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foundry ceramic sand is widely used in foundry technique like resin-bonded sand, sodium silicate sand, and clay- bonded sand for sand core and casting mould making.
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foundry ceramic sand is widely used as cleaning sand for copper and aluminum alloy castings.
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foundry ceramic sand is widely used as the main raw materials of advanced refractory products (Ladle drainage sand,gravity casting material, casting coating, etc.).
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foundry ceramic sand is widely used as dry sand and sand box for EPC process and V method of casting processes.
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foundry ceramic sand replace chromite sand for steel casting facing sand and sub-layer of molding sand (backing sand).
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foundry ceramic sand replace chromite sand and widely used in sand core making like jacket core, oil duct core, tappet core of engine.
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Applications
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Grit Size
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AFS SIZE
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Foundry sand for Lost foam
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8-15#（10#）10-20#，20-30#
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AFS25-35
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Filler sand
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30#
|
|
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No bake sand including furan resin /alkaline-phenolic resin molding and core making/ Pep set /Sodium-silicate bonded sand
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30-50#,40-70#,50-70#,70-140#
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AFS35-45,AFS25-35,AFS45-55,
AFS55-65,AFS60-70,AFS70-80 |
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Shell molding, resin coated sand casting
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50-100#,70-140#,100-200#
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AFS55-65,AFS60-70,AFS70-80,
AFS95-110 |
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Lost foam casting coating
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140-270#,-200#
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|
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Molding sand alcohol-based coating
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-200#
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|
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3D printing, precision casting, investment casting
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-140#
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