Question:
In the production sequence of pipe or tubing, a rolling mill is used to remove
In the production sequence of pipe or tubing, a rolling mill is used to remove
Show Hint
Sizing mills ensure dimensional accuracy in seamless tubes.
Updated On: Jun 29, 2026
- Surface cracks
- Scale formation
- Slight oval shape
- Residual stresses
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Concept:
Pipe and tube production involves multiple stages including piercing, elongation, and sizing. After initial forming, tubes may have dimensional inaccuracies.
Step 1: Understand tube defects.
After rolling:
• cross-section may become slightly oval
• dimensional accuracy may reduce
Step 2: Role of sizing/rolling mill.
Final rolling (sizing mill):
• corrects shape
• ensures circular cross-section
• removes ovality
Step 3: Why others are incorrect.
• cracks → not removed by rolling
• scale → removed by pickling
• residual stress → removed by heat treatment Final Answer: \[ \boxed{\text{Slight oval shape}} \]
Step 1: Understand tube defects.
After rolling:
• cross-section may become slightly oval
• dimensional accuracy may reduce
Step 2: Role of sizing/rolling mill.
Final rolling (sizing mill):
• corrects shape
• ensures circular cross-section
• removes ovality
Step 3: Why others are incorrect.
• cracks → not removed by rolling
• scale → removed by pickling
• residual stress → removed by heat treatment Final Answer: \[ \boxed{\text{Slight oval shape}} \]
Was this answer helpful?
0
0
Top TS PGECET Metallurgical Engineering Questions
- “It is impossible for a heat engine to be 100% efficient.” This statement is related to:
- If a system is completely ordered and the atoms are at rest at zero Kelvin, then the entropy of the system is:
- Electrodes used in anodizing process are:
- Units for quantity of electricity are:
- Identify the wrong statement:
View More Questions
Top TS PGECET Metal forming processes Questions
- Hot extrusion of aluminium is done in the temperature range of
- Which of the following is an exclusively cold working process?
- In cold working of steel
- In two high reversing mill, the rolls used are
- Die casting of aluminium is not done because of the reason that, it is
View More Questions
Top TS PGECET Questions
- If \( P = \begin{pmatrix} 1 & 1 & 1 \\ 0 & 1 & 2 \\ 0 & 0 & 1 \end{pmatrix} \) is the modal matrix of \( A = \begin{pmatrix} 1 & 1 & 0 \\ 0 & 2 & 2 \\ 0 & 0 & 3 \end{pmatrix} \) then the sum of all the elements of \( P^{-1}AP \) is
- If the system of equations \( kx + y + z = k - 1 \), \( x + ky + z = k - 1 \), and \( x + y + kz = k - 1 \) has infinite solutions, then \( k \) is
- The value of the integral \( \int_C (2xy - x^2) \, dx + (x^2 + y^2) \, dy \) where \( C \) is the boundary of the region enclosed by \( y = x^2 \) and \( y^2 = x \), described in the positive sense, is
- Let \( f(x) = \log x \). The number \( C \) strictly between \( e^2 \) and \( e^3 \) such that its reciprocal is equal to \( \frac{f(e^3) - f(e^2)}{e^3 - e^2} \) is
- The solution of the differential equation \( (D^2 + 2)y = x^2 \) is
View More Questions