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Manufacturing:
Metal Casting
Metal
Casting Techniques -
Hitchiner
Process (CLA, CLAS, CLAV)
The Hitchiner
casting process utilizes a counter gravity
(vacuum) system to fill the mold cavity
with molten metal. The molds are usually
produced using a resin-bonded shell and/or
a chemically bonded sand molding process.
The design of the mold provides small diameter
feeders through the drag half of the mold
to pull the metal up into the mold cavity.
The mold is partially submerged
into the metal bath and the metal is drawn
into the mold cavities. The vacuum system
draws the decomposition gases out of the
mold cavity as they are generated during
the pouring of the mold.
Process capabilities include
the ability to produce light section castings
in a variety of alloys normally not castable
by other processes. The Hitchiner process
also offer the capability of making castings
with good dimensional accuracy and casting
finish normally only obtainable in the lost
wax/investment casting process. Casting
integrity is excellent in alloy steels and
nickel alloys with designs not normally
castable by other processes. Castings of
up to 100 lb in steel and high alloys including
iron, nickel and cobalt-base metals.
Advantages
- High casting yield
- Good casting definition
- Less casting cleaning
is required compared to green sand, low
sand and gas inclusions
- Low scrap.
Disadvantages
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