Deck 7: Metal Forming Processes and Techniques

Question 1

When forming "Z" sections, the product is twisted in the opposite direction to compensate the machine generated twist.

Answer 1

True

Question 2

Which of the following is a type of extrusion process?

A)direct
B)indirect
C)impact
D)all of the mentioned

Answer 2

all of the mentioned

Question 3

In direct extrusion process at higher temperature which of the following is used to avoid friction?

A)oil
B)lubricants
C)molten glasses
D)wax

Answer 3

molten glasses

Question 4

In which of the following process frictional loss is eliminated at the billet container interface?

A)direct
B)indirect
C)impact
D)hydrostatic

Question 5

In which of the following process fluid medium is used to apply the load on the billet?

A)direct
B)indirect
C)impact
D)hydrostatic

Question 6

Extrusion is similar to?

A)rolling
B)forming
C)welding
D)casting

Question 7

Which defect arises due to high friction or high speed?

A)tearing
B)surface cracking
C)tearing & surface cracking
D)flaking

Question 8

Which of the following defect is also known as bamboo defect?

A)blow hole
B)cold shut
C)surface cracking
D)pipe defect

Question 9

Which of the following defect tends to draw surface oxides and impurities towards the centre of billet?

A)blow hole
B)cold shut
C)surface cracking
D)pipe defect

Question 10

Which of the following defect is also known as fish tailing?

A)surface cracking
B)pipe defect
C)tearing
D)internal cracking

Question 11

For proper stretching operation, the metal sheet should be stressed above its yield strength.

Question 12

In stretch forming, forming limit curve (FLC) is defined as a locus of all the limit strains in different strain paths of the sheet metal.

Question 13

The stretch forming process is generally performed by using a hydraulic operated ram.

Question 14

Rubber forming is a type of forming process in which polyurethane is used as a die material.

Question 15

The metal forging operation can only be performed by manual means.

Question 16

Which of the following metal forming processes performs squeezing out of material through a hole?

A)forging
B)rolling
C)drawing
D)extrusion

Question 17

Metal forming is a process in which the metal is deformed plastically to get into the desired shape.

Question 18

Which of the following processes is not the type of bulk forming process in the metal forming?

A)bending
B)rolling
C)forging
D)extrusion

Question 19

Which of the following manufacturing processes is mainly considered for producing the components of very high strength?

A)casting
B)forging
C)extrusion
D)rolling

Question 20

In metal forging process, the gravity drop hammers are operated by a ram using steam or pressurized air.

Question 21

Which of the following metal forming processes is best suitable for making the wires?

A)forging
B)extrusion
C)drawing
D)rolling

Question 22

Stretch forming is a sheet metal forming operation in which shearing is taking place to deform the material.

Question 23

Metal used for electroforming process absorbs energy from the magnetic field to get deform.

Question 24

In the electromagnetic forming process, the forming pulse is kept longer to optimize the use of energy.

Question 25

Which of the following methods of forming is not the part of electromagnetic forming?

A)compression
B)expansion
C)shearing
D)counter forming