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Askmemetallurgy Official
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Asked: 2020-06-15T17:00:44+05:30 In:

GATE MT 2019 Q45

The maximum possible reduction (in 𝑚𝑚, rounded off to one decimal place) of a 100 mm thick slab during rolling is _______.

Given: The coefficient of friction between roll and the slab is 0.2, and the roll diameter is 200 mm.

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    3 Answers

    1. Best Answer
      Platinum⭐ GATE 2021 QUALIFIED
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    2. Platinum⭐ GATE Metallurgy Coaching

      Maximum possible reduction is dependent on roll diameter and the coefficient of friction between rolls and the slab. Relation is ∇hmax = μ2R , so putting the values μ =0.2 and R=100 mm we will get  ∇hmax = 4mm You can watch video of this solution as 15:40  https://www.youtube.com/watch?v=xpvU691n51QRead more

      Maximum possible reduction is dependent on roll diameter and the coefficient of friction between rolls and the slab.

      Relation is ∇hmax = μ2R , so putting the values μ =0.2 and R=100 mm we will get 

      ∇hmax = 4mm

      You can watch video of this solution as 15:40 

      https://www.youtube.com/watch?v=xpvU691n51Q&list=PLFS_xICJ_zVPwqvTZ6QToink9EOBilj-x&index=10

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    3. Platinum⭐ Metallurgical and Materials Engineering student
      This answer was edited.

      Maximum possible reduction is Delta hmax = μ2R =0.22* 100 = 4mm

      Maximum possible reduction is

      Delta hmax = μ2R =0.22* 100 = 4mm

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