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Which defect does the following image denote?

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in Engineering Material & Metallurgy by (773k points)
Which defect does the following image denote?

(a) Orange peel

(b) Sinking

(c) Burr and bend

(d) Wrinkling

I got this question in an online interview.

This key question is from Defects and Machining of Metals, Solidification of Metals topic in chapter Mechanical Working Processes & Phase Transformations of Engineering Material & Metallurgy

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Correct answer is (a) Orange peel

The explanation: Whenever a coarse grain material blank is drawn, they will often be seen as a rough surface. The metal surface experiences roughness like that or an orange peel. This is known as the orange peel effect.

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