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Metal-casting Questions Set 10:

Quiz Mode

An incorrect riser size may result in:

shift

misrun

penetration

voids

Solution:

Shift is a casting defect caused by shifting of

mold box parts

pattern

cores

all of the above

Solution:

Scab is a type of casting defect.

sand casting defect

machining defect

welding defect

forging defect

Solution:

The casting process that uses a rotating mold is

slush casting

centrifugal casting

die casting

continuous casting

Solution:

Why are patterns split into parts?

To save the pattern material

To make handling easier

To reduce molding time

To facilitate pattern withdrawal

Solution:

The fluidity of molten metal of cast alloys (without any addition of fluxes) increases with increase in

Freezing range

Viscosity

Surface tension

Degree of superheat

Solution:

In a hot chamber die casting machine, the melting pot is:

Separate from the machine

May have any location

An integral part of the machine

Not present in the die casting machine

Solution:

Misrun is a casting defect which occurs due to

Very high pouring temperature of the metal

Absorption of gases by the liquid metal

Improper alignment of the mould flasks

Insufficient fluidity of the molten metal

Solution:

In a gating system, the ratio of sprue base area: runner area: ingate area is 1:2:4. This is the characteristic of a:

pressurized gating system

non-pressurized gating system

none of the above

both pressurized and non-pressurized gating systems

Metal-casting Questions Set 10:

An incorrect riser size may result in:

Solution:

Shift is a casting defect caused by shifting of

Solution:

Scab is a type of casting defect.

Solution:

The casting process that uses a rotating mold is

Solution:

Why are patterns split into parts?

Solution:

The fluidity of molten metal of cast alloys (without any addition of fluxes) increases with increase in

Solution:

In a hot chamber die casting machine, the melting pot is:

Solution:

Misrun is a casting defect which occurs due to

Solution:

In a gating system, the ratio of sprue base area: runner area: ingate area is 1:2:4. This is the characteristic of a:

Solution:

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