Grinding Wheel hardness and hardness selection

The hardness of the grinding wheel abrasive grains are reflected under the action of the grinding force, the grinding wheel surface from the ease of shedding. Wheel hardness is hardness that is different from the hardness of the abrasive grinding wheel hardness. Wheel  cutting tools , when to pay attention to appropriate hardness, if too hard, abrasive  synthetic diamond  blunt the untimely loss, will generate a lot of heat, burn the workpiece; wheel is too soft, then make the grit off too fast and can not be fully effective. [Select Wheel hardness principle] 1. Workpiece harder, softer wheel. (2) the greater the contact surface grinding wheel and the workpiece, the softer the wheel selection. 3 should be selected grinding and profile grinding wheel hard to maintain the required shape precision grinding. 4 Wheel hardness selection and the relationship between particle size: the larger the wheel size, in order to avoid wheel blocked by debris, generally choose a softer wheel. 5. Workpiece material: grinding nonferrous metals, rubber, resins and other soft materials should be used softer wheel.