The neutral (no-slip) point in the roll gap is where:

The surface velocities of the roll and the strip are equal

The maximum possible draft in rolling without slipping is governed by:

The coefficient of friction and the roll radius (\(\Delta h_{max}=\mu^2 R\))

Hot rolling differs from cold rolling chiefly in that hot rolling:

Occurs above the recrystallization temperature, so the metal does not strain-harden permanently

Roll flattening (elastic deformation of rolls) tends to:

Increase the contact arc length and the rolling force required

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GATE Metallurgical Engineering Previous Year Question Papers

Focuses on material science, extractive metallurgy, alloy development, and metal processing, for roles in metallurgical and materials industries.

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