Transcript MANUFACTURING - Southern Polytechnic State University

Metal Casting Processes
Chapter 11
Test yourself!
1
Which process is this?!
Uses sand mold
held together by
vacuum pressure
rather than by a
chemical binder
Vacuum molding
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Which process is this?!
Vacuum
molding
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Which process is this?!
A pattern made of
wax is coated with a
refractory material to
make mold, after
which wax is melted
away prior to pouring
molten metal
Lost wax process
Or Investment casting
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Which process is this?!
Die casting
(Hot chamber)
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Which process is this?!
mold is made of refractory
ceramic material that can
withstand higher temperatures
than plaster
Ceramic mold casting
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Which process is this?
Casting process in which the mold is a thin shell of sand
held together by thermosetting resin binder.
Shell molding
Parts made using this process
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Which process is this?
Uses a mold of sand packed around a polystyrene
foam pattern which vaporizes when molten metal is
poured into mold
EPS (Expanded
Polystyrene) process
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Which process is this?
Molten metal is poured
into rotating mold to
produce a tubular part
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True centrifugal casing
Which process is this?
A permanent mold casting process in which molten metal is
injected into mold cavity under high pressure
Die casting
(Cold-chamber)
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Which process is this?
Molten metal is not allowed to completely solidify. After
the desired wall thickness is obtained, the not yet
solidified molten metal is poured out.
Pouring of excess
resin from mold.
Casting Mold and
Final Product.
Slush casting
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Which process is this?
Instead of using gravity to assist in the metal pour and
flow in the mold, a low pressure of up to 0.1 MPa
(15 psi) gas is applied to the molten metal.
Low pressure casting
Manufacturing Processes
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