me 132 report: casting processes modern/ contemporary
TRANSCRIPT
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Metallic Mold Casting
Die Casting
Low Pressure Casting
Gravity Mold Casting
Slush Casting
Pressed Casting
Centrifugal Casting
True Centrifugal
Semi-centrifugal
Centrifuging
Precision Casting
Lost Wax Method
Ceramic Shell Process
Plaster Molds
Shell Molding
CO2 mold hardening
process Molds of other materials
Continuous Casting Vertical
Curved
Horizontal
Inclined
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Hot-Chamber Die Casting
-metal is forced into the mold and pressure
is maintained during solidification.
- low melting alloys are generally used in
this process.
Cold-Chamber Die Casting
- metal is melted separately unlike in hot-
chamber die casting.
- high melting alloys are generally used.
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Hot-chamber die casting:
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Cold-chamber die casting:
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2. Low-pressure permanent-mold casting- Uses gas pressure to fill the mold.
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3. Gravity or permanent mold casting- Utilizes a permanent mold made of metal or graphite
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-Resembles both gravity and the slush casting.
-Developed in France by Corthias.
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A method of casting parts having axial symmetry
Done by pouring the molten metal into a rotating mold.
Mold rotation is continued until the metal solidified
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Is used to produce hollow castingswith a round hole.
Characteristic feature is that holeis produced by centrifugal forcealone.
Mold is rotated about the axis heldhorizontal, inclined, or vertical.
Outside surface of the job may beround, square, etc., as long as itis symmetrical to the whole axis.
Speed of rotation should be highenough to hold the metal on tothe mold.
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Similar to TCC casting, but
Only with a difference that a
central core is used to produce
holes.
Generally used for articles
which are more complicated
than those possible in TCS.
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Is employed to force metalunder pressure into molds of
non-symmetrical small castings
having intricate details.
Metal is poured along the axis ofrotation through a central
sprue, and made to flow into
mold cavities through radial
ingates.
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Is a process used to cast continuous length
of metal, such as in piping or tubing.
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1.Molten metal is delivered
to the casting equipment.
2. It then flows from a tundishinto the mold.
3.The molten metal cools and
partially solidifies thru the
water-cooled mold.4.The section is supported and
guided below the mold by
opposed rollers that contact
the cast section.5.The opposed rollers
withdraw the solid cast
section to a station where it
is cut to desired length.
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