Deck 11: Metal Forming

Question 1

Which of the following defects occur due to melting or burning away of base metal?

A)undercut
B)spatter
C)cracking in weld metal
D)cold cracking

Answer 1

undercut

Question 2

Forging is a metal forming operation in which the metal is stretched to form the desired shape of a metal part.

Answer 2

False

Question 3

In general, the casted metal part is much stronger and tougher than that produced by the forging operation.

Answer 3

False

Question 4

The open die forging process is also known as upsetting or upset forging process.

Question 5

Which of the following processes is mainly used for making the connecting rods?

A)casting
B)deep drawing
C)rolling
D)forging

Question 6

In impression die forging process, extra deformed material is produced which is called a flash.

Question 7

A cone shaped die is used in the orbital forging for the forging of metal parts.

Question 8

When an asymmetrical section is roll formed, the finished product will have__________

A)camber
B)cross-bow
C)a twist
D)waviness

Question 9

Which of the following is true about the extrusion process?

A)structure is homogeneous
B)no time is lost in changing the shape
C)service life of extrusion tool is too high
D)its leading end is in good shape as compared to rolling

Question 10

In which extrusion process the direction of flow of metal is in same direction as that of ram?

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

Question 11

Which of the following is not used because of the problem of handling extruded metal coming out through moving ram?

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

Question 12

Which of the following is not a cold extrusion process?

A)cold extrusion forging
B)impact extrusion
C)hydrostatic extrusion
D)cold rolling

Question 13

The centre of the extruded product can develop cracks called as?

A)centre cracking
B)centre burst
C)arrow headed fracture
D)all of the mentioned

Question 14

Which of the following processes of metal forming is best suited for making products like aircraft wings and window frames?

A)forging
B)rolling
C)drawing
D)stretch forming

Question 15

Stretch forming is a process which involves tensile and bending forces during the operation.

Question 16

Forming is a process that changes the shape of the metal by changing its phase.

Question 17

Rolling is a forming process in which thickness of the metal plate is decreased by increasing its length.

Question 18

In stretch forming, spring-back is a very complicated problem which causes trouble in operating machines during the process.

Question 19

High volume rate of production can be possible by stretch sheet metal forming process.

Question 20

Tangential stretch forming and simple stretch forming are quite similar to each other.

Question 21

In electromagnetic forming, highly intense magnetic field is used for the forming process.

Question 22

The magnetic field interacts with metal to generate heat in the metal which causes forming process.

Question 23

Electromagnetic forming cannot be used for materials of poor electrical conductivity.

Question 24

The efficiency of electromagnetic forming mainly depends on the resistivity of material being formed.