The grinding wheel is a round shaped fixed abrasive that has a through hole in the center made of abrasive and binder. Wheel characteristics are determined by factors such as abrasive, particle size, hardness, bond, shape and size, which are described below.
Abrasives are the main raw material for the manufacture of grinding wheels, which are responsible for cutting work. Therefore, the abrasive must be sharp and have high hardness, good heat resistance and a certain toughness.
Granularity and your choice
Refers to the size of the abrasive particles. The particle size is divided into two types: abrasive grains and fine powder. For large particles
Abrasive at 40 μm is called abrasive grain. Classification was carried out by a screening method, and the particle size number was expressed by the number of perforations per inch of the screen passing through the abrasive grains. An abrasive grit such as 60# indicates that it is the size of a screen with a length of 60 holes per inch. For abrasives with a particle size of less than 40 μm, it is called micropowder. Microscopic measurement was carried out, and the particle size number was represented by W and the following numbers, and the value after W represents the actual size of the fine powder.