ELEMENTS OF THE GRINDING WHEEL (2)

Today we will talk about the second element of the grinding wheel-the bond.

What is a bond? Bond is a material that combine abrasive grains together, which forms abrasive layer of different shapes.

The hardness of the grinding wheel what we called is actually the bonding strength. Super-hard grinding wheels (including diamond and CBN grinding wheels) .The main bonds include metal, resin, vitrified, electroplated and brazed.

Conventional grinding wheels (including aluminum oxide and silicon carbide grinding wheels), the main bond include vitrified, resin and rubber bond, etc. How to distinguish grinding wheels with different bonds from their appearance? The metal bond is usually bronze, so the metal bond can sometimes be called bronze bond. So it is obvious that yellow or golden yellow is a metal bond. But it is still different from sprayed yellow which will be brighter than the sprayed color. Resin bond is darker in color, and it is almost difficult to distinguish with the naked eye whether it is a diamond or a CEN grinding wheel.

If it is a vitrified bond, you can see that the diamond grinding wheel's color is usually white or yellow. And CBN wheel's color is black, which is the abrasive grain's original color. This judgment method is applicable to the conventional grinding wheel. Above bonds usually have a thick abrasive layer, so if you see a single layer on a steel body, it must be electroplated bond.

And the golden color is electroplated diamond wheel. Black color is electroplated CBN wheel. Brazed bond is similar to electroplated bond, only has a single layer, most of them are diamond.And it is usually sprayed with silver color or golden color.

If you are interested in our knowledge sharing, please continue to pay attention to our website or email us to share your experience of grinding wheel.