2013年10月29日星期二

Grinding wheel as the most important one class of abrasive

 Grinding wheel as the most important one class of abrasive. It is through the combination of the abrasive agent is added through the green compacts, drying and calcining a porous body made. Because of the differences in raw materials and manufacturing processes, has Sanding Sheets  produced a grinding wheel features difference is very big, so the effect of grinding process used has a significant impact.
Wheel characteristics determine factors: abrasives, intensity, binders, hardness, structure, shape and size. Wheel variety:an be divided according to the ordinary abrasives abrasives (corundum and silicon carbide, etc.) and natural abrasive grinding wheels and superabrasive (diamond and cubic boron nitride) grinding wheel;hape can be divided according to level grinding wheels, bevel wheel, cylindrical grinding wheels, cup wheels, disc wheel, etc.; binding agents can be classified according to the  Bonded abrasives ceramic grinding wheel, resin grinding wheel, rubber wheel, metal grinding wheel. The wheel parameters are abrasive, viscosity, hardness, binders, shape, size and so on.
Since wheel usually work at high speed, thus turning test should be carried out before use (guaranteed wheel at the maximum operating speed, not break) and static balance test (to prevent machine vibrations caused by the work). Grindstone at work for some time, should be trimmed to restore grinding performance and correct geometry.

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