EDMM 1500 Exam Questions with Correct Answers Latest Version 2025 Graded A+
Gates - Answers a channel which connects runner with the mold cavity and through which molten metal
flows to fill the mold cavity.
Draft - Answers the amount of taper for molded or cast parts perpendicular to the parting line.
Gating System - Answers all passageways through which the molten metal passes to enter the mold
cavity.
Sprue - Answers a screw-like passage through which a molten material is introduced into a mold
Slag - Answers glass-like by-product left over after a desired metal has been separated (i.e., smelted)
from its raw ore
Dross - Answers a mass of solid impurities floating on a molten metal or dispersed in the metal, such as
in wrought iron
Flash - Answers excess material attached to a molded, forged, or cast product
Cope - Answers top part of a casting flask
Drag - Answers bottom part of a casting flask
Flask - Answers a type of tooling used to contain a mold in metal casting. Has only sides, and no top or
bottom, and forms a frame around the mold, which is typically made of molding sand.
Parting-line - Answers line where the cope and drag meet
Matchplate - Answers A plate on which metal-casting patterns are mounted or formed as an integral
part, to facilitate the molding operation
Investment - Answers a technique for making small, accurate castings in refractory alloys using a mold
formed around a pattern of wax or similar material which is then removed by melting
Lost Foam (Lost Wax) - Answers a type of evaporative-pattern casting process that is similar to
investment casting except foam is used for the pattern instead of wax
Permanent Mold - Answers a metal casting process that employs reusable molds ("permanent molds"),
usually made from metal. The most common process uses gravity to fill the mold, however gas pressure
or a vacuum are also used
Ceramic Mold - Answers also known ambiguously as ceramic molding, is a group of metal casting
processes that use ceramics as the mold material. It is a combination of plaster mold casting and
investment casting. There are two types of ceramic mold casting: the Shaw process and the Unicast
process
Green Sand - Answers casting with molds that are composed sand, water, and some clay
, Centrifugal - Answers or rotocasting is a casting technique that is typically used to cast thin-walled
cylinders. It is used to cast such materials as metal, glass, and concrete. It is noted for the high quality of
the results attainable, particularly for precise control of their metallurgy and crystal structure
Squeeze - Answers also known as liquid metal forging, is a combination of casting and forging process.
The molten metal is poured into the bottom half of the pre-heated die
Die - Answers a metal casting process that is characterized by forcing molten metal under high pressure
into a mold cavity
Shell - Answers an expendable mold casting process that uses a resin covered sand to form the mold
Use for Risers - Answers a reservoir built into a metal casting mold to prevent cavities due to shrinkage
Most Used Foundry Sand - Answers Natural
Beginning of Metal Casting Industry - Answers 3200 BC, Mesopotamia
Metal casting is what type of processing? - Answers all processes where material in liquid form is
introduced into a mold or cavity.
Which metal casting process provides superior finish, sound structure, and accurate dimensions? -
Answers Investment Casting
Which metal alloys can be cast? - Answers Aluminum, Copper, Steel, Zinc, Iron, Magnesium
What is permeability of foundry sand? - Answers a property of foundry sand with respect to how well
the sand can vent
Which processes can be used to produce the densest casting? - Answers Centrifugal Casting
What is viscosity of molten metal? - Answers the state of being thick, sticky, and semifluid in
consistency, due to internal friction
Which process would have the lowest tooling cost? - Answers Green Sand Molding
Injection Molding - Answers the shaping of rubber or plastic articles by injecting heated material into a
mold
Blow Molding - Answers a manufacturing process by which hollow plastic parts are formed
Compression Molding - Answers a method of molding in which the moulding material, generally
preheated, is first placed in an open, heated mold cavity
Thermoforming - Answers the process of heating a thermoplastic material and shaping it in a mold
Extrusion - Answers a process used to create objects of a fixed cross-sectional profile. A material is
pushed through a die of the desired cross-section
Gates - Answers a channel which connects runner with the mold cavity and through which molten metal
flows to fill the mold cavity.
Draft - Answers the amount of taper for molded or cast parts perpendicular to the parting line.
Gating System - Answers all passageways through which the molten metal passes to enter the mold
cavity.
Sprue - Answers a screw-like passage through which a molten material is introduced into a mold
Slag - Answers glass-like by-product left over after a desired metal has been separated (i.e., smelted)
from its raw ore
Dross - Answers a mass of solid impurities floating on a molten metal or dispersed in the metal, such as
in wrought iron
Flash - Answers excess material attached to a molded, forged, or cast product
Cope - Answers top part of a casting flask
Drag - Answers bottom part of a casting flask
Flask - Answers a type of tooling used to contain a mold in metal casting. Has only sides, and no top or
bottom, and forms a frame around the mold, which is typically made of molding sand.
Parting-line - Answers line where the cope and drag meet
Matchplate - Answers A plate on which metal-casting patterns are mounted or formed as an integral
part, to facilitate the molding operation
Investment - Answers a technique for making small, accurate castings in refractory alloys using a mold
formed around a pattern of wax or similar material which is then removed by melting
Lost Foam (Lost Wax) - Answers a type of evaporative-pattern casting process that is similar to
investment casting except foam is used for the pattern instead of wax
Permanent Mold - Answers a metal casting process that employs reusable molds ("permanent molds"),
usually made from metal. The most common process uses gravity to fill the mold, however gas pressure
or a vacuum are also used
Ceramic Mold - Answers also known ambiguously as ceramic molding, is a group of metal casting
processes that use ceramics as the mold material. It is a combination of plaster mold casting and
investment casting. There are two types of ceramic mold casting: the Shaw process and the Unicast
process
Green Sand - Answers casting with molds that are composed sand, water, and some clay
, Centrifugal - Answers or rotocasting is a casting technique that is typically used to cast thin-walled
cylinders. It is used to cast such materials as metal, glass, and concrete. It is noted for the high quality of
the results attainable, particularly for precise control of their metallurgy and crystal structure
Squeeze - Answers also known as liquid metal forging, is a combination of casting and forging process.
The molten metal is poured into the bottom half of the pre-heated die
Die - Answers a metal casting process that is characterized by forcing molten metal under high pressure
into a mold cavity
Shell - Answers an expendable mold casting process that uses a resin covered sand to form the mold
Use for Risers - Answers a reservoir built into a metal casting mold to prevent cavities due to shrinkage
Most Used Foundry Sand - Answers Natural
Beginning of Metal Casting Industry - Answers 3200 BC, Mesopotamia
Metal casting is what type of processing? - Answers all processes where material in liquid form is
introduced into a mold or cavity.
Which metal casting process provides superior finish, sound structure, and accurate dimensions? -
Answers Investment Casting
Which metal alloys can be cast? - Answers Aluminum, Copper, Steel, Zinc, Iron, Magnesium
What is permeability of foundry sand? - Answers a property of foundry sand with respect to how well
the sand can vent
Which processes can be used to produce the densest casting? - Answers Centrifugal Casting
What is viscosity of molten metal? - Answers the state of being thick, sticky, and semifluid in
consistency, due to internal friction
Which process would have the lowest tooling cost? - Answers Green Sand Molding
Injection Molding - Answers the shaping of rubber or plastic articles by injecting heated material into a
mold
Blow Molding - Answers a manufacturing process by which hollow plastic parts are formed
Compression Molding - Answers a method of molding in which the moulding material, generally
preheated, is first placed in an open, heated mold cavity
Thermoforming - Answers the process of heating a thermoplastic material and shaping it in a mold
Extrusion - Answers a process used to create objects of a fixed cross-sectional profile. A material is
pushed through a die of the desired cross-section
