Chromite uses

Chromite uses Chromite uses Chromite uses Chromite uses Chromite uses

Product description of price of Foundry chromite sand for foundry:

Foundry chromite sand is a natural process products of chromite through the broken screen classification, chrome ore, its main chemical composition of cr2o3, this kind of sand heated volume stability, high thermal conductivity, when in contact information with the molten metal, not only has good resistance to basic slag, not with ferric oxide and other chemical reactions, and itself has the characteristics of the solid phase sintering, can be a very good prevent the infiltration of molten metal, avoid to touch sand defects, suitable for all kinds of stainless steel, alloy steel and carbon steel gradually shape the original sand core and coating.

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Foundry chromite sand for foundry

1. With excellent chilling characteristics, this characteristic does not reduce the thermal cracking, but can affect the temperature gradient, promote directional solidification without the use of cold iron.

2. Chromite foundry sand is inert and does not react with other metal oxides. It is not wetted by manganese steel water. Chromite can be successfully used in manganese steel castings.

3. Linear expansion is small, and linear expansion is a factor that may cause sand inclusion in castings, so it may be used to mix wet sand mold for large castings.

Physical and chemical index of Foundry chromite sand for foundry:

Physics

Index

Chemistry

Index

Bulk Density

2.5-3g/cm³

Cr2O3

≥46.0% 

PH Value

7-9

SiO2

≤1.0%

Cr/Fe

1.55:1

Fe2O3

≤26.5%

   Filling Density

       2.6 g/cm³

CaO

≤0.30%

Percent Moisture

≤0.1

MgO

≤10%

The sintered

1600°C

AI2O3

≤15.5%

Sintering Temperature

2180°C

P

≤0.003%

     Melting Point

>1800°C

C

≤0.003%

Regular size

                             AFS 25-35 AFS25-30 AFS30-35 AFS35-40                                             AFS40-45 AFS45-50 AFS50-55 AFS55-60 AFS60-65

 

  

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