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Asked: June 9, 20202020-06-09T14:24:17+05:30 2020-06-09T14:24:17+05:30In: Metal Working (Forming)

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

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12.64%Extrusion ( 33 voters )
8.05%Deep drawing ( 21 voters )
12.26%Sheet metal forming ( 32 voters )
67.05%Rolling ( 175 voters )
Based On 261 Votes

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GATE MT 2019 Q12. Alligatoring is a defect commonly observed in _____________.
GATE MT 2019 Question Paper With SolutionGATE MT Manufacturing technologyGATE MT Previous Year Questions With Solution
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    1 Answer

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      Arpita Samal Platinum⭐ Metallurgical and Materials Engineering student
      2020-06-09T16:10:43+05:30Added an answer on June 9, 2020 at 4:10 pm

      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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      • Askmemetallurgy Official Gold official account of Askmemetallurgy
        2020-06-10T12:10:37+05:30Replied to answer on June 10, 2020 at 12:10 pm

        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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