Question:
Temper rolling improves all of the following except
Temper rolling improves all of the following except
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Temper rolling is a very light cold work process used mainly to improve surface and eliminate yield point phenomenon.
Updated On: Jun 29, 2026
- Surface quality
- Flatness
- Yield-point elongation behaviour
- Grain size refinement
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The Correct Option is D
Solution and Explanation
Concept:
Temper rolling (skin-passing) is a light cold rolling process applied to annealed steel sheets to improve surface finish and mechanical behavior without significantly changing microstructure.
It mainly affects:
• surface appearance
• elimination of yield point elongation
• improved flatness However, it does not significantly alter grain size because deformation is very small.
Step 1: Effect on surface quality.
Light rolling smoothens surface irregularities and improves finish. \[ \Rightarrow \text{Surface quality improves} \]
Step 2: Effect on flatness.
Residual stresses are reduced and sheet becomes flatter. \[ \Rightarrow \text{Flatness improves} \]
Step 3: Effect on yield point elongation.
It eliminates Lüders bands by removing yield point phenomenon. \[ \Rightarrow \text{Yield-point elongation improves} \]
Step 4: Effect on grain size.
No significant plastic deformation occurs, so grain refinement does NOT occur. \[ \Rightarrow \text{No grain refinement} \] Final Answer: \[ \boxed{\text{Grain size refinement}} \]
• surface appearance
• elimination of yield point elongation
• improved flatness However, it does not significantly alter grain size because deformation is very small.
Step 1: Effect on surface quality.
Light rolling smoothens surface irregularities and improves finish. \[ \Rightarrow \text{Surface quality improves} \]
Step 2: Effect on flatness.
Residual stresses are reduced and sheet becomes flatter. \[ \Rightarrow \text{Flatness improves} \]
Step 3: Effect on yield point elongation.
It eliminates Lüders bands by removing yield point phenomenon. \[ \Rightarrow \text{Yield-point elongation improves} \]
Step 4: Effect on grain size.
No significant plastic deformation occurs, so grain refinement does NOT occur. \[ \Rightarrow \text{No grain refinement} \] Final Answer: \[ \boxed{\text{Grain size refinement}} \]
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