Question

Name the four processes A, B, C, and D, shown in Figure, in the same sequence.

• A. A – Drawing, B– Extrusion, C– Stretch Forming, D – Shearing
• B. A – Drawing, B– Extrusion, C– Shearing, D – Stretch Forming
• C. A – Extrusion, B– Drawing, C– Shearing, D – Stretch Forming
• D. A – Extrusion, B– Drawing, C– Stretch Forming, D – Shearing

Hint:

Distinguish between Extrusion (pushed through a die) and Drawing (pulled through a die). Stretch forming involves tensioning a sheet over a die, while shearing is a cutting operation using a punch and die.

Answer 1

The Correct Option is D

Step 1: Identify the process shown in Figure A.
In Figure A, a billet is forced through a die opening to reduce its cross-section and increase its length. This process is known as Extrusion. Step 2: Identify the process shown in Figure B.
In Figure B, a billet is pulled through a die to reduce its cross-section and increase its length. This process is known as Drawing (specifically, wire or tube drawing). Step 3: Identify the process shown in Figure C.
In Figure C, a sheet metal is stretched over a die to form a contoured part. The edges of the sheet are gripped and pulled to impart tension while the die shapes the sheet. This process is known as Stretch Forming. Step 4: Identify the process shown in Figure D.
In Figure D, a punch and die are used to cut a sheet metal along a line. This process, which involves localized shear failure, is known as Shearing. Step 5: Arrange the identified processes in the sequence A, B, C, and D.
The processes identified are:
A - Extrusion
B - Drawing
C - Stretch Forming
D - Shearing
The sequence is Extrusion, Drawing, Stretch Forming, Shearing. Step 6: Match the sequence with the given options.
Option 4: A – Extrusion, B– Drawing, C– Stretch Forming, D – Shearing matches the identified sequence. Step 7: Select the correct answer.
The four processes A, B, C, and D in the given sequence are Extrusion, Drawing, Stretch Forming, and Shearing.