What are Grinding Wheels Used For

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What are Grinding Wheels Used For
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Grinding wheels are made up of abrasive grains
and layers of fiberglass that are bonded together
by another material to form a wheel shape. The
abrasive grains serve as grinding tools,
extracting material from a workpiece so that it
can be formed and refined. Grinding wheels come
in handy for a variety of grinding and machining
tasks.
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Characteristics of Grinding Wheels
There are five main characteristics of a grinding
wheel- material hardness, grain size, wheel
grade, grain spacing, and bond type.

• Material hardness

The abrasive material of a grinding wheel is
based on the hardness of the cutting workpiece
material. Super abrasives are special grinding
wheels designed with diamond or CBN grains.
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• Grain size

The size of the abrasive grains in the wheel is
determined by a scale of 10 to 600 (finest)
coarsest. A larger grain can cut more freely,
allowing for quicker cutting but with a poorer
surface finish.

• Wheel grade

The degree to which the bond retains the abrasive
varies from soft to hard. Softer structures range
from A to H, relatively hard structures range
from I to P, and hard structures range from Q to
Z.

• Grain spacing

The ratio of bond and abrasive to air space is
known as density.
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