Abrasive is sharp, hard material, for grinding the surface of softer material. There are natural and artificial abrasives abrasives abrasives two categories. Classification according to the hardness and the general extravagant super abrasive abrasive two categories. A wide range of abrasive, from softer household detergents, precious hard abrasive material into the diamond. Each is a precision abrasive product manufacturing essential materials. Many natural abrasives.
2013年10月10日星期四
Grinding technology development
Currently used in traditional ordinary abrasive granular slow grind main advantages are high precision, but also has some disadvantages in inch: such as:
1, the abrasive grinding disc is placed loose on the disc speed is not too high to avoid splashing abrasive, abrasive waste, so processing efficiency is low.
2, abrasives and grinding from the workpiece under the debris mixed together, the abrasive can not play a full role, but sandpaper roll also to improve the processing efficiency with these often abrasive debris washed together, both to waste energy, but also a waste of abrasive .
3, abrasive grinding discs are randomly distributed, and its distribution uneven density of the workpiece material grinding cutting uneven workpiece surface accuracy is difficult to control; particularly abrasive and the workpiece relative motion between the randomness, which also increases to see work face accuracy can not afford to identify factors that reduce the stability of the machining accuracy.
4, the grinding process, the abrasive forces cutting and grinding disc between each other, but also the relative motion, which results in the abrasive cutting action between both abrasives abrasive, abrasive and increased energy waste.5, in the grinding process, the large size of the abrasive to withstand greater pressure, and the small size of the abrasive is exposed to a small pressure, even independent of pressure, which makes large cutting depth large abrasive particles, resulting in deep scratches, impact surface quality, so as to improve surface quality, the abrasive non woven flap wheel loose abrasive grain size uniformity higher.
6, in the strictly controlled grinding medicine flow of coolant to avoid abrasive away, the cooling effect of variation which is easy to cause the workpiece to heat up, resulting in decreased precision machining.
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