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

GATE MT 2019 Q45

The maximum possible reduction (in π‘šπ‘š, 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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    2. Platinum GATE Metallurgy Coaching |Providing Video Solutions and Concepts of Metallurgy since 2016 | Follow our channel, "C Patel Metallurgy" on Youtube for your GATE preparation

      Maximum possible reduction is dependent on roll diameter and the coefficient of friction between rolls and the slab. Relation is βˆ‡hmax = ΞΌ2R , so putting the values ΞΌ =0.2 and R=100 mm we will getΒ  βˆ‡hmaxΒ = 4mm You can watch video of this solution as 15:40Β  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 βˆ‡hmax = ΞΌ2R , so putting the values ΞΌ =0.2 and R=100 mm we will getΒ 

      βˆ‡hmaxΒ = 4mm

      You can watch video of this solution as 15:40Β 

      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 hmaxΒ = ΞΌ2R =0.22* 100 = 4mm

      Maximum possible reduction is

      Delta hmaxΒ = ΞΌ2R =0.22* 100 = 4mm

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