Environmental emery sand for glass sandblasting
This new developed specific Foundry Sand is produced from the special selected high quality refractory raw material at very high temperature at 2,300 – 2,500℃. Our these ACFS sand has excellent solid cores with high strength and very low resin addition rates. The materials has excellent crystalline with formula is 5Al2O3-SiO2. Application: Shell moulds and cores for casting gray, Malleable and nodular cast iron, alloyed steel and carbon steel, non-ferrous metals, etc. |
The Main Advantage * Stabe quality on the chemical composition * Perfect grain round shape and various grain sizes * High gas permeability * High temperature resistance * Good break down and fast curing and good release
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Chemical Composition
SiO2 | 5– 15% |
Al2O3 | 70–85% |
Fe2O3 | 5%min |
TiO2 | 5%min |
MgO | 0.5%min |
K2O | 0.5%min |
CaO | 0.5%min |
Physical Character
Grain shape | Perfect round ball shape |
Color | Brown-Black |
Angle index | 1 .1 max |
Size rang | 0.053-3.36mm |
Loose Bulk Density | 1.9 – 2.1 g/cm3 |
Refractoriness | 2050℃ |
Liner thermal expansion | (200℃ - 1000℃) 5×10-6/℃ |
Main Advantage
1 | Stabe quality on the chemical composition |
2 | Perfect grain round shape and various grain sizes |
3 | High gas permeability |
4 | High temperature resistance |
5 | Good break down and fast curing and good release |
6 | Perfectly round shape with higher fluidity improves fill-in efficiency while reducing the resin level |
7 | Smooth surface of spherical shape greatly improves collapsibility after pouring |
8 | Very low thermal expansion ensures fewer or no casting defects such as veining and deformation |
9 | Excellent thermal conductivity and heat absorption capacity close to that of Zircon |
10 | Superior refractory equivalent to Zircon and Chromites |
Applications
1 | Widely used in foundry technique like resin-bonded sand, sodium silicate sand, and clay- bonded sand for sand core and casting mould making |
2 | Replace chromite sand and widely used in sand core making like jacket core, oil duct core, tappet core of engine. |
3 | Replace chromite sand for steel casting facing sand and sub-layer of molding sand (backing sand). |
4 | Widely used as dry sand and sand box for EPC process and V method of casting processes. |
5 | Widely used as the main raw materials of advanced refractory products (Ladle drainage sand,gravity casting material, casting coating, etc.). |
6 | Widely used as cleaning sand for copper and aluminum alloy castings. |
PS:The main performance comparison of ceramic foundry sand,Chromite sand and Zircon Sand
Ceramic Foundry Sand | Zircon Sand | Chromite Sand | |
PH Value | 7.65 | 4.56 | 8.24 |
Bulk Density(g/㎝) | 1.95-2.05 | 2.9-3.1 | 2.6-2.7 |
True Density(g/㎝) | 3.4 | 4.4-4.71 | 3.9-4.8 |
Shape | spherical | Irregular | Irregular |
Binder into water(Waterglass +CO2 Hardness) | 3-4% | 7-8% | 7-8% |
