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Asked: 2020-06-09T14:24:17+05:30 In:

GATE MT 2019 Q12. Alligatoring is a defect commonly observed in _____________.

Poll Results

13.97%Extrusion ( 32 voters )
8.3%Deep drawing ( 19 voters )
12.66%Sheet metal forming ( 29 voters )
65.07%Rolling ( 149 voters )
Based On 229 Votes

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GATE MT 2019 Q12. Alligatoring is a defect commonly observed in _____________.
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    1. Best Answer
      Platinum Metallurgical and Materials Engineering student

      Alligatoring is the defect, usually occurs in the rolling of slabs (particularly aluminum and alloys). In this defect, the work piece splits along a horizontal plane on exit, with the top and bottom. This defect always occurs when the ratio of slab thickness to the length of contact fall within theRead more

      Alligatoring is the defect, usually occurs in the rolling of slabs (particularly aluminum and alloys). In this defect, the work piece splits along a horizontal plane on exit, with the top and bottom. This defect always occurs when the ratio of slab thickness to the length of contact fall within the range of 1.4 to 1.65.

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      • official account of Askmemetallurgy

        Correct answer is option D. @Arpita Samal described it best. Thank you. Some peripheral lines related to this topic: Alligatoring is the accidental splitting of a piece of sheet metal to form two open ends. It gets its name from the metal resembling the mouth of an alligator. Usually, this is a resuRead more

        Correct answer is option D. Arpita Samal described it best. Thank you.

        Some peripheral lines related to this topic:

        • Alligatoring is the accidental splitting of a piece of sheet metal to form two open ends. It gets its name from the metal resembling the mouth of an alligator.
        • Usually, this is a result of the machinery pressing down too hard that the metal reacts in a strange way, as if the metal was crushed or steamrolled.
        • Alligatoring is considered a production defect that can lead to flaws in appearance, performance, and stability.

        Fig. Alligatoring defect in rolling

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