Question

The rolling process is governed by the frictional force between the rollers and the workpiece. The frictional force at the entrance side is smaller than that at the exit side. This allows the roller to pull the workpiece towards the exit end. a)- True b) False

Answer 1

Answer:

b)false

Explanation:

Rolling is a process in which work piece passes through rolls to produce desired out put of the work piece.Rolling  is a metal forming process.

We know that friction force is responsible for motion of work piece between rolls.If friction force is so small at the entrance side then work piece will not enter in the forming zone and forming process will not occurs.So the friction force should be high at the entrance side and low at the exit side.

So given statement is wrong.