Development of abrasive cut-off wheel having side grooves

The abrasive cut-off wheel fails prematurely during the routine sectioning of workpiece, which may cause injury to the operator. One of the major reasons of premature failure is the improper mixing of the abrasive mixture. In order to provide strength to the wheel, it was reinforced by woven roving type glass fiber and the abrasive mixture was ball milled. Cutting zone temperature becomes high during the cutting operation, which may cause thermal damage to the workpiece and debonding of abrasive from the wheel. It is very difficult to supply the cutting fluid to the cutting zone in order to reduce the temperature. New types of abrasive cut-off wheels were developed, which have radial passages on their surfaces to supply the cutting fluid to the cutting zone. Performance of the wheels was compared and the mechanical strength of the wheel material was tested.