When using a CBN wheel to grind hardened tool steels or hard cast
irons, a heavy duty soluble oil coolant at 5 to 10% concentration will
extend wheel life. Sulfurized or sulfochlorinated mineral oils are recommended
when grinding superalloys (ie) nickel or cobalt based alloys.
Never use a water based coolant with rust inhibitors or detergents
with CBN wheels as the reaction will adversely affect the grinding wheel.
Surface Finish
Use the following as a starting point in selection of the mesh size
for your superabrasive resin bonded grinding wheel. Factors such as
machine type and condition, material type, table speed, and coolant
will influence eventual finish.
