Q177
Which of the following methods can be used for manufacturing 2 meter long seamless metallic tubes?
A.
Drawing
B.
Extrusion
C.
Rolling
D.
Extrusion and rolling
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Extrusion is a process used to create objects of a fixed cross-sectional profile. A material is pushed through a die of the desired cross-section.rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness and to make the thickness uniform.