A grinding wheel is an abrasive tool used to cut a
material or polish a surface. It typically consists of a steel or aluminum
disc, with a rough finish that is made up of particles held together with a
gluing or bonding agent. There are many different types, sizes, and grades ofgrinding wheels.
Common wheel types
include straight, tapered, and cut-off, but there are many others available as
well.
The type
of material and size of particles used generally determines the abrasiveness of
the surface, and cutting action of the grinding wheel. The most common families of
materials used for the abrasive particles are silicon carbide and diamond.
There are many variants of these abrasive materials, like ceramic aluminum
oxide and boron
carbide, for example.
Selecting
the right grinding wheel for
a specific application is primarily determined by the hardness of the material
being cut. The abrasive material, bonding agent, density, grade, and grain-size
are all also key considerations. The physical size of the abrasive particles,
known as grain-size, will affect the cutting performance of the grinding wheel.
A fine grain will remove less material, and is normally used for polishing and
to achieve a fine surface finish. A large grain-size will cut material quickly,
but create a rough surface finish.
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