Honing stones with graphite

Honing stones containing graphite are manufactured without exception from white aluminium oxide in a vitrified bond in 400 - 1000 grit sizes. The special feature of this type of stone is the retention of graphite in the vitrified bonding mixture; this provides a high stock removal rate with a good surface finish. Main areas of application can be found in the roller bearing, shock absorber and steel industries.

Types of impregnation

Sulphurized or wax impregnated honing stones produce a film during the honing process between the stone and the workpiece; this provides the following advantages:

Better surface finish

Less honing stone wear

Better swarf removal

Sulphurized honing stones should not be used on non-ferrous metals due to the possibility of discolourization of the surface.