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What Are Superabrasives?

Superabrasives make up a special category of bonded abrasives designed for grinding the hardest, most challenging work materials. Because...

2016年11月11日星期五

Grinding wheel application method - stone grinding

Grinding wheel is an important tool, which consists of many small and hard abrasive and bonding agent made of porous objects. Abrasive grains directly bear the cutting work, must be sharp and has a high hardness, heat resistance and a certain degree of toughness. Commonly used abrasives are alumina (also known as corundum) and silicon carbide two. Alumina abrasive high hardness, good toughness, suitable for grinding steel materials. Silicon carbide abrasive hardness higher, more sharp, good thermal conductivity, but more brittle, suitable for grinding of cast iron and carbide.
The same grinding wheel, because of its different thickness, the workpiece after processing the surface roughness and processing efficiency is not the same, abrasive coarse for coarse grinding, grinding fine for fine grinding, abrasive more coarse, smaller particle size. Qingxian Wang Weitun the first wheel factory is Qingxian well-known wheel manufacturer, the production of grinding wheel, wheel, new and old customers get the praise!
The binder acts as a bond abrasive. Commonly used are ceramic binders, followed by resin binders. Binding agent different choice of materials, affecting the grinding wheel corrosion resistance, strength, heat resistance and toughness.
The more firmly bonded, the more difficult to fall from the wheel, called the hardness of the wheel, that is, the hardness of the grinding wheel is the surface of the abrasive wheel under the action of the external force of the degree of difficulty falling. Easy to fall off called soft, otherwise called hard. The hardness of the grinding wheel and abrasive hardness are two different concepts. The surface of the workpiece to be ground is soft and the edge of the abrasive grain is not easy to wear, so that the abrasive grain can be used for a longer time, that is to say, an abrasive wheel with stronger hardness can be used. Conversely, the low hardness of the grinding wheel for grinding high hardness of the workpiece.
In order to ensure the safety, the wheel should be checked before installation, there should be no cracks and other defects; in order to make the wheel smooth, should be used before the dynamic balance test.
Grinding wheel work after a certain time, the surface of the gap will be debris clogging, abrasive sharp angle will be blunt, the original geometry distortion. It must therefore be trimmed to restore the cutting capacity and correct geometry. The wheel needs to be trimmed with a diamond pen.

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