Knurling

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/knurling

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 process classification?Cold forming, plastic deformation of metal without heat
2. What is the primary mechanism?Pressing hardened steel knurls into a rotating workpiece
3. What is knurling and why is it used?Knurling is a process that presses tiny patterns into metal to give it a better grip. It helps people hold tools, bike handlebars, and other objects more safely.
4. How does knurling make a handle feel better?The raised ridges from knurling increase friction, so your fingers don’t slip. It also lets you feel where to turn knobs or adjust settings.

Plastic Deformation: Permanent change in shape of a material under stress, without fracturing.
Coefficient of Friction: A measure of the resistance to sliding between two surfaces in contact.
Subtractive Manufacturing: Manufacturing processes that remove material from a workpiece to create a desired shape.