Concentration of diamond grain in the diamond layer
The concentration of diamond grain is the content by weight of diamond in the diamond layer.
The unit of weight for diamond grain is a carat (ct), 1ct=0.2 g.
The diamond concentration is one of the most important characteristics of a diamond tool, determining its cutting ability, productivity, length of usage and cost. The choice of concentration depends on the type of tool, the form and size of the working surface, the diamond grit size, the wear-resistance of the bond, and the conditions in which the tool will be used.
The following are guidelines for the choice of diamond concentration in the diamond layer:
— for a small contact surface between the grinding wheel and the workpiece, for example as in circular grinding, a high diamond concentration should be chosen. This provides higher wear resistance for the wheel, even at high loads.
— a large contact surface necessitates lowering the grinding temperature and the grinding intensity. In this case a lower diamond concentration should be used.
Wheels are produced with diamond concentrations of 25%, 50%, 75%, 100% and 150% (It is possible to produce wheels with other concentrations if needed by the customer.)