Introduction to Grinding

Question 1

What is grinding? Explain this briefly

Answer 1

process to improve finish and slightly alter surfaces tolerances by removing a small amount of the material.

An abrasive material is rubbed against a metal piece and small surface material is removed.

Question 2

Give three reasons for grinding

Answer 2

1. Materials too hard to be machined (such as lathe work).
2. Tolerances need to be adjusted for machining.
3. Removing of excess material.

Question 3

What is loading?

Answer 3

When a grinding wheel loaded with small debris between the abrasive grains. This causes overheating.

Question 4

What is glazing?

Answer 4

Grinding wheel has a shiny appearance - abrasive particles have become dull and do not cut effectively.

Question 5

What is dressing?

Answer 5

This is the cleaning of the grinding wheel to fix the above problems (glazing and loading). Also makes sure that the wanted surface finish is given.