One process, which utilizes abrasive machining, is the grinding process.
A machining process where the abrasives used are bonded together into a wheel. The grinding wheel is the cutting tool in this process. In grinding, high precision and tight tolerances are possible. Typical tolerances associated with this process are +/- .0001.” Product examples include bearings, machining fixtures, shafts, and precision measurement gauges.
Chips in this process are formed by the same mechanism of compression and shear as other machining processes.
As the grains or abrasives become dull, the cutting forces increase. The increase in the cutting force causes the grains to plow and rub rather than cut. As the plowing and rubbing increases, the grains fracture at the cutting edge to revile a new cutting edge.
Silicate - This bond uses silicate of soda as the bonding agent. Wheels are formed then baked at 500F for a day or longer. They are not as strong as vitrified-bonded wheels. Because they are not as strong, abrasive grains fracture more easily. This results in lower operating temperatures which can be a positive factor depending on the application of the wheel.