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Investment Casting Terms
– A
compound consisting of either more than one metal or a metal and a nonmetal
blended together.
–
Casting that is not heat treated after being removed from the mold.
– The process whereby
excess water and wax is removed from a molding.
– Forming and shaping
a material substance, such as an industrial piece of equipment, by pouring
liquid into a mold and allowing it to harden.
– The empty space within
the mold into which the molten metal will be poured.
– The process
of filling a permanent mold cavity with molten material while rotating
the mold. Centrifugal casting is often used during the investment casting
process to increase the amount of pressure exerted upon the metal in order
to reproduce mold details, such as lettering and holes.
– The process
by which an investment mold is created from a pattern in order to be cast.
Ceramic molds consist of solid molds and ceramic shells.
– The
method of creating a ceramic mold through the immersion of a pattern into
a slurry of liquid and covering the coated pattern with sand. The pattern
is usually immersed and coated nine to ten times before the shell is completed.
– The method
of applying protective plastic to metal.
– Lines on the surface
of a casting that are the by-product of the incomplete fusion of metal
streams.
– The sharing
of a common point or axis of two or more surfaces of shapes, such as cylinders,
cones, spheres and hexagons.
– A form inserted into
a mold to create internal mold features.
– A surplus of
nonmetal substances within a casting.
– Pertaining to or containing
iron.
– The method of reshaping
metal through the application of heat and compression.
– The openings in the
gating system that transfer the molten metal from the runners into the
mold cavity.
– The structure
that transfers the molten metal into the mold. Gating systems are designed
to uniformly transfer the metal into the mold cavity to create an even
mold.
– Small pieces of
refractory materials, sand, slag or deoxidation products that have been
trapped within the casting while it was solidifying.
– The injection
of a molten substance, usually metal, under substantial pressure into
a mold.
– An ancient
process related to investment casting that consisted of creating and plastering
a wax model, replacing the wax with molten metal and removing the plaster
after the metal cooled.
– An incomplete casting.
– A hollow container from
which liquid substances can be formed into solid shapes.
– A solid that has been
converted into a liquid through the application of heat.
– Not pertaining
to or containing iron. Examples of non-ferrous metals include aluminum-
and copper-based substances.
– A casting model created
by injecting metal dye with wax. When the wax solidifies, it forms the
pattern, which is then molded and cast.
– A
term that refers to the extent to which the pattern size must be increased
to allow for metal shrinkage.
– The process
in which a wax pattern is sprayed with plaster slurry to create a mold.
– The
process of using metal, often iron, to create the mold. Permanent molds
are cheaper than sand molds when a large quantity of parts is produced,
as they can be used more than once.
– The part of the
gating system that pushes the molten metal into a mold.
– An open space in a mold
into which extra molten metal is trapped.
– Horizontal mechanisms
connected to the sprue that transfer the molten metal from the sprue to
the mold.
– The process of
pouring molten metal into a natural or an artificial sand mold to form
large parts, often made of iron.
– The process
in which sand and plastic are poured over a hot metal pattern, whose heat
causes the sand and plastic to mold to the pattern. The mold is removed
from the metal, filled with molten metal and broken once the metal hardens,
forming a cast.
– The contraction
of metal during the cooling process.
– The degree
to which a pattern is enlarged to allow for the contraction of the metal
during the cooling process.
– The thick, insoluble
liquid made of substances like plaster and silica from which a mold is
created by repeatedly covering the patterned wax with the liquid.
– The method
in which a wax pattern is placed within a steel container called a flask.
The flask is then filled with a liquid plaster, which hardens into a mold
of the pattern.
– Vertical mechanism connected
to the pouring cup that transfers the molten metal to the runners.
– A term that refers
to the deviation of the cast axis from the true axis.
– Small holes in the gating
system through which air is pushed out of the mold as molten metal is
poured into the mold.
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