In grinding operation, for grinding
harder material:
Coarser grain size is used
Fine grain size is used
Medium grain size is used
Any grain size may be used
Any grain size may be used
●In grinding operation, for grinding
harder material grinder of any grain size may be used.
●A simple rule to follow is to use a
hard wheel for soft materials and soft wheel for hard materials.
●Remember that the hardness or grade
of a wheel bears no relation with the abrasive material used in its construction.
Hence, the correct option is (D).
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