Abrasive Wheels Training Certificate Abrasive Wheel Types and Selection

Question 1

Which type of abrasive wheel is most commonly used for cutting ferrous metals such as mild steel?

Accepted Answer

Aluminium oxide wheel

Answer

Silicon carbide wheel

Answer

Diamond wheel

Answer

CBN (Cubic Boron Nitride) wheel

Question 2

What does the letter 'A' represent in the standard abrasive wheel marking system (e.g., WA 60 K 5 V)?

Accepted Answer

The abrasive grain type

Answer

The bond type

Answer

The wheel grade (hardness)

Answer

The structure number

Question 3

Which abrasive wheel type would be most appropriate for cutting concrete and masonry?

Accepted Answer

Diamond-impregnated cutting wheel

Answer

Aluminium oxide depressed centre wheel

Answer

Silicon carbide flat cutting disc

Answer

Wire-brushed flap disc

Question 4

A grinding wheel marked with a grain size of '60' would be classified as which type?

Accepted Answer

Medium

Answer

Coarse

Answer

Fine

Answer

Very fine

Question 5

What is the primary purpose of a flap disc when used on an angle grinder?

Accepted Answer

Blending, finishing, and deburring metal surfaces

Answer

Precision cutting of thin metal sheets

Answer

Drilling holes in masonry

Answer

Polishing glass surfaces

Question 6

In the abrasive wheel marking 'WA 46 L 7 V', what does the letter 'V' indicate?

Accepted Answer

The vitrified bond type

Answer

The wheel's maximum operating speed

Answer

The vendor's quality rating

Answer

The wheel's vibration class