As diamonds have many excellent mechanical properties, for example, high hardness, big strength, good wear resistance and low friction coefficient, they have obvious advantages when being used in grinding contrasting with the common abrasives.
In my previous article about how to choose diamonds’ grit, I said some main points you should consider. There are still many other points which are also important.
When choosing the diamonds’ grit of a diamond tool, we should consider the workpieces’ roughness requirement, the tool’s cutting/grinding efficiency and the best grit range of the tool’s bond.
The bond of a diamond tool is mainly determined by the tool’s use. There are mainly three types of bond: resin, ceramic and metal.
Nowadays, diamond cup wheels are widely used to grind granite, marble, brick blocks, concrete, etc.