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Metal-casting Questions Set 16:

Quiz Mode

What is the typical height of a cupola furnace?

Solution:

What material is used in the bottom casting of a cupola furnace?

Cast iron

Pig iron

Grey iron

White iron

Solution:

A casting defect which occurs due to improper venting of sand is known as?

Blow holes

Hot tear

Cold shuts

Shift

Solution:

How is the flowability of molding sand affected by adding moisture?

Increases

Decreases

Remains constant

Decreases then increases

Solution:

Which of the following is the principal binder used in the carbon dioxide molding process?

Carbon

Sodium

Sodium silicate

Carbon Dioxide

Solution:

From the design point of view, the ratio of the minimum volume of the riser to that dictated by the liquid shrinkage consideration is kept at

Solution:

The optimum pouring time for a casting depends on several factors. One important factor among them is

Location of riser

Porosity of sand mould

Fluidity of casting metal

Area of the pouring basin

Solution:

Why is wood flour added to core sand?

To improve the collapsibility of the core

To improve the dry strength of the core

To improve the shear strength of the core

To improve the tolerance on casting

Solution:

To avoid aspiration effect, the flow area for the stream of molten metal in a vertical sprue should vary in what way with respect to the head?

none of the above

linearly

parabolically

exponentially

Solution:

What is a function of a riser in a sand casting process?

To provide differential cooling rates in specific areas of the casting

Provide good mobility to the molten metal

To let the gases escape in the casting

Prevent cavities due to shrinkage

Metal-casting Questions Set 16:

What is the typical height of a cupola furnace?

Solution:

What material is used in the bottom casting of a cupola furnace?

Solution:

A casting defect which occurs due to improper venting of sand is known as?

Solution:

How is the flowability of molding sand affected by adding moisture?

Solution:

Which of the following is the principal binder used in the carbon dioxide molding process?

Solution:

From the design point of view, the ratio of the minimum volume of the riser to that dictated by the liquid shrinkage consideration is kept at

Solution:

The optimum pouring time for a casting depends on several factors. One important factor among them is

Solution:

Why is wood flour added to core sand?

Solution:

To avoid aspiration effect, the flow area for the stream of molten metal in a vertical sprue should vary in what way with respect to the head?

Solution:

What is a function of a riser in a sand casting process?

Solution:

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