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Profile
Slush Casting: Slush Casting is a special type
of permanent mold casting, where the molten metal is not allowed
to completely solidify. After the desired wall thickness is obtained,
the not yet solidified molten metal is poured out. This is useful
for making hollow ornamental objects such as candlesticks, lamps,
statues etc.
Corthias Casting: Corthias Casting is another variation of
the permanent mold casting, where a plunger is used to pack down
the molten metal form the sprue hole. This allows for thinner walls
and greater details to be produced.
Low Pressure Permanent Mold Casting: Low Pressure Permanent
Mold Casting is yet another variation of the permanent mold casting.
Here, instead of using gravity to assist in the metal pour and flow
in the mold, a low pressure of upto 1 atmosphere gas is applied
to the molten metal. This maintenance of pressure on the melt causes
complete fill of the mold and compensates for any shrinkage on cooling.
Thin wall castings can be made. Mechanical properties are about
5 % superior to permanent mold casting. Since no riser is used (unlike
a regular casting), the yield is generally higher since the metal
in the pressurized feed tube is still molten and the mold is ready
for the next shot right away.
Vacuum Permanent Mold Casting: Vacuum Permanent Mold Casting
is yet another variation of the permanent mold casting. This is
similar to the low-pressure permanent mold casting, where a vacuum
is used instead of a pressure. Thin wall castings can be made as
in the low-pressure permanent mold casting. In addition, the yields
are high since no risers are used. Since vacuum is used instead,
the purity of the metal is maintained. The mechanical properties
of the casting are 10 to 15 % superior to the traditional permanent
mold casting. Castings range in size from 200 g to 4.5 kg (6 oz
to 10 lb).
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