Foundry sand chromite sand used for casting sand AFS50-55 PV:4269
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Category:Aluminum Oxide
SPEC:AFS30-35
Packaging:Bag Package/Small Bag Package
High chromite stuffing sand is mainly made up of
imported high pure chromite sand with reasonable particle size distribution,
and suit for foundry industry and other refining process.
Chromite sand ,it’s main chemical composition
is Cr2O3(chromic oxide), This kind of sand heating volume is stable , High
thermal conductivity , sand molten metal contact , not only has a good
alkali slag resistance , not with iron oxide and other chemical reaction
, and itself has the characteristics of solid phase sintering , can well prevent
the penetration of molten metal , avoid sand defects , suitable for all kinds
of stainless steel , Alloy steel and carbon steel gradually modeling core sand
and paint .
Item |
Index |
Cr2O3 |
≥46.0% |
SiO2 |
≤1.0% |
FeO |
≤26.5% |
CaO |
≤0.30% |
MgO |
≤10.0% |
Al2O3 |
≤15.5% |
P |
≤0.003% |
S |
≤0.003% |
Cr/Fe |
1.55:1 |
Bulk Density |
2.5-3 |
Color |
Black |
PH |
7-9 |
The amount of the acid |
≤ 2 ML |
Percent soil |
≤0.1% |
Percent Moisture |
≤0.1% |
The sintered |
1600℃ |
Percentage of free acid present in the
sand |
0 |
filling density |
2.6g/cm³ |
sintering point |
> 1800°C |
melting temperature |
2180°C |