The hardness of the wheel represents the soft abrasive wheel off easily, abrasive grinding wheel hardness should mean more difficult to fall off. Wheel hardness and hardness of the abrasive is two totally different concepts, with an abrasive wheel may be made of different hardness, it depends on the performance, the number of manufacturing processes and wheel binding agent.
Grinding wheel and the cutting has a significant difference, choose the hardness of the wheel is actually choose from Yue of the wheel, hoping sharp abrasive grains do not fall off too early, and do not blunt the not fall off.
The shape and size of main wheel according to the conditions and the workpiece shape, material properties and other factors to select the grinder. General still need to be selected after the appearance of the wheel and crack identification, but sometimes difficult to observe internal crack in the wheel, then use the sound test, such as tapping with a mallet to listen to the sound, the sound was not clear pickled good crack wheel .
As for the selection of the wheel will have to consider when considering the size, as far as possible to the outer diameter of the general election was bigger; vertical mill should be a wide choice of wheel; when the mill circle, take the outer diameter of the workpiece aperture wheel 2 / 3.
In addition, it should be noted that in particular, the linear velocity of the grinding wheel used must not exceed the value of the flag.
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