Low Thermal Expansion Rate Ceramsite Foundry Sand Fused Ceramic
Sand 14#-270#
1. Product Description of Ceramsite Foundry Sand
Ceramsite Foundry Sand is also called as Fused ceramic sand,it
selected the calcined bauxite
as main material, then fused, sprayed,screened into different
specifications,which is mainly
used for foundry industries.
It is an advanced substitute for quartz sand.
2. Main Technical Data
| Commodity | Main Chemical Index | Main Physical Index |
Ceramsite Foundry Sand | Al2O3 ≥75%
Fe2O3 ≤3%
SiO2≤18%
TiO2≤3.5%
K2O3+Na2O <1%
CaO+MgO<1%
L.O.I <0.3% | Shape: Spherical
Color:Gray Brown
Refractoriness:≥1790 ℃
Bulk Density:1.9-2.1g/cm3
True Gravity:3.30g/cm3
Coefficient of Expansion:0.13%
(Heat 10Minutes under 2000℃)
PH:7-8
Thermal Conductivity:0.698W/m*K
(Heated Surface 800℃)
Angle coefficient:≤1.1
(Very similar to spherical)
Water Content≤0.1%
Mud Content≤0.1%
Average Coefficient of Linear Expansion≤6*10-6℃-1 |
| Grit Size | 14#,20#,30#,40#,50#,70#,100#,140#,200#,270# |
| Section Sand | 14/20,20/30,20/40,20/50,30/50,40/50,40/70,50/100 |
| 50/140,70/140,70/200,100/200,140/270,200/270 |
| Remark | Special specification can be customized |
3. Main Features of Ceramsite Foundry Sand
Dense structure,smooth surface,good fluidity and filling;
Low thermal expansion rate, high product size accuracy, few cracks
and defects, high casting yield;
Good crushing resistance: Ceramsite hasdense structure and high
strength, it is not easy to be broken
down after repeated regeneration, high recycling rate and low waste
sand emission rate
Low bulk density: ceramsite has lower bulk density compared with
the one of zicon sand and Chromite
ore,which will reduce the cost of high quality molding sand.
4. Main Applications:
Widely used for resin sand casting, coated sand, refractory coating
and lost foam casting, V method
casting, shell casting, precision casting;
Widely used in casting molding process such as aerospace,
shipbuilding, railway locomotive, wind power,
high-end pump valve, machine tool, engine, auto parts, mining
machinery and other industries.
Widely used in Ladle drainage sand, soluble mold core, surface shot
peening, etc.
5. Why Ceramsite is widely used in casting industry?
Ceramsite is one non-quartz type artificial sand, which can greatly
improve the quality of castings, easy
to be cleaned , and the sand matching process is simple and
convenient, which can reduce the coating
cost of most castings, especially suitable for making high-quality
castings;
Ceramsite has the advantages of high refractoriness, good fluidity
and high air permeability, which can
solve the defects in the casting production to a certain extent;
Ceramsite effectively solves the problems of high casting cost and
poor casting quality.
Therefore, it is gradually replacing quartz sand or forsterite
sand, then widely used in the casting industry.
