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Quality - Sand Control |
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Sand testing and control is a foundry process used to determine if the
foundry sand has the correct properties for a certain
casting process. The sand is used to make molds (cope and
drag) and cores (at C & L, shell and sodium silicate). |
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Sand Control
Methods We Employ
The basic tests measure the following parameters: wet
tensile strength, cone jolt, friability, moisture content,
permeability, green compression strength, compactability,
loss on ignition, volatiles content, grain size &
distribution, dust (dead clay) content, and active clay
content.
Additional tests for parameters, such as splitting
strength, shear strength, and high temperature compression
strength are also performed.
The basic set of parameters we test are: |
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Green Sand
Mold Ready for Cores |
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Fineness
Number |
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Moisture
Content |
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Permeability |
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Total Clay
Content |
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Active Clay
Content |
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Compressive
Strength |
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| C & L Aluminum Foundry,
Inc.'s green sand molding system is made up of basic sand
and bentonite. We purchase premulled certified sand from
Green Diamond Sand which has low thermal conductivity
resulting in less chilling than silica or olivine sands. Green Diamond Sand is a tough grain that breaks down very
little in use and is environmentally friendly. |
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