Rolling Process Quiz

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Questions and Answers

What is the purpose of the rolls in the rolling process?

The rolls are used to reduce the thickness of a slab or plate by drawing the work into the gap between them and squeezing it.

What is the purpose of the cylindrical tools called rolls in the rolling process?

To draw the work into the gap between them and squeeze it (correct)
To cool down the workpiece after it has been heated
To create different shapes of the workpiece
To increase the thickness of the slab or plate

What is the purpose of rolling in metalworking?

The purpose of rolling in metalworking is to shape a metal into a thin long layer by passing it through two rollers rotating in opposite directions.

What are the different types of rolling processes?

The different types of rolling processes include ring rolling, roll bending, roll forming, profile rolling, and controlled rolling. Signup and view all the answers

What is the difference between hot rolling and cold rolling process?

The temperature at which the rolling process is performed (A) Signup and view all the answers

What are rolls normally made of in rolling operations?

Rolls are normally made up of cast or forged steel. Signup and view all the answers

What happens to the friction force during the rolling process?

It changes its direction after the neutral point (A) Signup and view all the answers

How is the desired dimension of strip achieved in rolling, and what is the looping process used for?

The desired dimension of strip is achieved in multiple passes by adjusting the gap between the rollers after each pass. The looping process is used in a three high rolling mill with loop, where long and flexible job is available, and is done by using a bent tube or trough known as a repeater. Signup and view all the answers

How does the rolling pressure distribution vary as a function of geometric parameters?

The rolling pressure distribution varies as a function of geometric parameters, and can be estimated based on these parameters. In this case, both rolls are equal radius and rotate with the same circumferential velocity. Signup and view all the answers

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