Casting 2

Match the list -I (Casting Process) with List - II (Advantage)

List - I : A) Sand Casting, (B) Ceramic Mold Casting, (C) Die Casting, (D) Centrifugal Casting

List - II : 1) Large cylindrical parts with good quality , (2) Excellent dimensional accuracy, (3) Intricate shapes and close tolerance parts, (4) Almost any metal is cast and there is no limit to size, shape and weight, (5) Good dimensional accuracy, finish and low porosity

• A - 4, B-3, C-2, D-1

• A - 3, B-5, C-2, D-1

• A - 1, B-2, C-3, D-4

• A - 4, B-3, C-2, D-5

In Sand casting molds a 'Sprue' feeds metal to which one of following ?

• Riser

• Runner

• Gate

• Cavity

In solidification of metal during casting compensation for solid contraction is

• Provided by oversize pattern

• Achieved by properly placed risers

• Obtained by directional solidification

• None of all

In sand moulding, the bottommost part is called:

• Cope

• Cheek

• Drag

• Flask bottom

The taper provided on pattern for its easy and clean withdrawal from the mould is called:

• Tapper allowance

• Draft allowance

• Distortion allowance

• Pattern allowance

Permeability of a foundry sand is:

• Porosity to permit the escape of gases/ air

• Fineness of sand

• Distribution of binder in sand

• Capacity to hold moisture

Metal patterns are used for

• Small casting

• Large castings

• Precise and intricate casting

• Large scale production of castings

A casting defect which results in general enlargement of a casting is known as

• None of these

• Shift

• Sand wash

• Blow Hole

A sprue hole is.......

• a casting defect

• a hole made for riveting

• a blind hole for jigs

• an opening in mould for pouring molten metal

Fluidity is generally influenced by

• Carbon content of molten metal

• Melting temperature of molten metal

• Inoculant addition

• Pouring temperature of molten metal