Abrasive of grinding wheel: sand type (1)

Grinding wheels or other combined grinding stones have two main components:
The abrasive particles that are actually cut, and the bonding agent that holds the particles together and supports the particles during cutting. The ratio of the abrasive, the bonding agent and the gap between the two determines the structure of the grinding wheel.
The specific abrasive used in the grinding wheel should be selected according to the way it interacts with the workpiece material. The ideal abrasive has the ability to maintain sharpness and is not easily passivated. When passivation begins, the abrasive will break to form new sharp points. Each type of abrasive is unique, with different hardness, strength, fracture toughness and impact resistance.
Alumina is the most commonly used abrasive in grinding wheels.
It is usually selected to grind carbon steel, alloy steel, high-speed steel, malleable cast iron, wrought iron, bronze and similar metals. There are many different types of alumina abrasives, each of which is specially manufactured and mixed for special types of grinding operations. Different aluminas will have their own names: usually a combination of letters and numbers. These names will vary from manufacturer to manufacturer. Abrasive Carbide Grinding Wheel is your good choice.