Question:
Flange wrinkling is the defect found in
Flange wrinkling is the defect found in
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Wrinkling = Compression. In deep drawing, the outer edge is squeezed together, causing it to fold if not held down properly.
Updated On: Jul 4, 2026
- Rolling
- Forging
- Bending
- Deep drawing
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The Correct Option is D
Solution and Explanation
Step 1: Concept Defects in metal forming arise when the stresses exceed the limits of the material or the stability of the process.
Step 2: Meaning Deep drawing involves pulling a sheet metal blank into a die by a punch to form a cup-shaped part.
Step 3: Analysis As the flange of the blank is drawn into the die, it is subjected to circumferential (hoop) compressive stresses.
Step 4: Conclusion If these compressive stresses cause the flange to buckle, the resulting wavy defect is called flange wrinkling. Final Answer: (D)
Step 2: Meaning Deep drawing involves pulling a sheet metal blank into a die by a punch to form a cup-shaped part.
Step 3: Analysis As the flange of the blank is drawn into the die, it is subjected to circumferential (hoop) compressive stresses.
Step 4: Conclusion If these compressive stresses cause the flange to buckle, the resulting wavy defect is called flange wrinkling. Final Answer: (D)
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