Rolling (metalworking)

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/rolling-metalworking

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the hot rolling mechanism?Above recrystallization temperature, enabling easier deformation and dynamic recrystallization
2. What is the cold rolling effect?Induces work hardening, increasing yield strength and hardness but reducing ductility
3. What is metal rolling?Metal rolling is a process where metal is squished between rotating rolls to make it flat and strong, like shaping playdough into a sheet.
4. How does hot rolling make metal better?Hot rolling heats the metal above its recrystallization temperature, so it needs less force to shape and its grain structure becomes finer, giving it more ductility and toughness.

Work Hardening: The strengthening of a metal by plastic deformation, increasing dislocation density.
Anisotropy: Having properties that differ in direction, such as strength in different axes.
Dislocations: Line defects in a crystal lattice that enable plastic deformation.