Vitrified |
Ceramic
Bond |
V |
Make up of feldspar and clays
selected for their fusibility and
carefully processed.
The pressed blanks are dried
in chambers with automatically
controlled temperature and
then baked in kilns at a
temperature about 1300°C. |
Porosity and strength of wheels
made with this bond give high
stock removal and their rigidity
helps in the attainment of high
precision grinding works.
This bond is not affected by
water, acid, oils or ordinary
temperature variations. |
Resinoid |
Synthetic
Resin
bond |
B |
The mixture consist of
abrasive, synthetic resin and
a plasticizer. The blanks are
placed in kilns without
previously dried.
The bonding agent is
hardened at temperature
between 160°C. and 200°C.. |
This bond is excellent for cutoff
wheels, depressed center
wheels, especially for ultra
high speed work. Accuracy is
not the first considering factor. |
MgO |
Oxychloride
Magnesium
Bond |
O |
The abrasive grains are
added into a mixture of the
magnesium oxide and
magnesium chloride which is
formed and hardened at
ordinary temperature. |
This bond is excellent for cool
cutting even without a coolant
and is very suitable for
grinding springs, bearing
house by double disc
grinders. Also, it is widely
used in dry grinding works. |
Epoxy |
Epoxy
Bond |
E |
It is madeup of the mixture of
abrasives, Epoxy binder and
then hardened at a normal
temperature. |
The epoxy wheel is not
affected by water and acid,
and more elastic than
resinoid wheel.
It is widely used in need of
high stock removal works. |
Rubber |
Rubber
Bond |
R |
It is made with natural or
synthetic rubber as a binder and
cured at a low temperature. |
The rubber wheel which has
a good elasticity and strong
hardness is used under the
wet grinding condition for
precision grinding works as
the regulating wheels for
centerless grinding works.
The weakness of the rubber
wheels is certainly to be used
with the coolant because of a
variation by heating at a high
revolution speed. |
