The most effective way to improve resin diamond grinding wheel

Diamond wheel

The diamond grinding wheel is made of diamond abrasive as the raw material, and the metal fixed powder, the resin powder, the ceramic and the electroplated metal are respectively used as the bonding agent, and the circular fixed abrasive having the through hole in the center is called a diamond grinding wheel (alloy grinding wheel).

Resin bond diamond grinding wheel

Resin bond diamond grinding wheel has the characteristics of small grinding force, good self-sharpness, easy to block, less heat generation, elasticity and good polishing. Therefore, it has high processing efficiency and easy to be trimmed. It is widely used in machining hard. Materials such as alloys, ceramics, magnetic materials, and optical glass.

However, the domestic resin bond diamond grinding wheel has a low life expectancy and cannot meet the requirements of advanced CNC machine tools. The wear of the grinding wheel itself is also very likely to cause fluctuations in the size of the workpiece and quickly become super-defect. The short life is mainly due to the poor wear resistance of the resin binder itself or the low holding power of the diamond, resulting in premature release of the diamond abrasive grains during the grinding process. Therefore, how to improve the wear resistance of the resin binder and improve the holding power of the resin to diamond is the key to improving the service life of the resin bond binder diamond wheel.

Adding silicon carbide whiskers to the resin bond diamond wheel

The addition of silicon carbide whiskers can greatly improve the strength, hardness, heat resistance, and polishing properties of the bonding agent and the grinding wheel. Recently, a company in Japan has introduced a product in which a silicon carbide whisker is added to a resin bonded diamond grinding wheel. Silicon carbide whiskers have unique mechanical and physicochemical properties such as high hardness, high strength (toughness) and excellent wear resistance, which are widely used in the strengthening and toughening of metals, ceramics, plastics and composites to improve compounding. The strength of the material prevents shrinkage and deformation.

The shape of the silicon carbide whisker is acicular, especially its Vickers hardness is close to that of diamond and it has good toughness and wear resistance. Compared with the abrasive grain, even if the diameter is the same as the abrasive grain size, there is a certain length of whisker and bonding. The agent has a relatively large bonding area and bonding strength, thereby greatly increasing the service life of the grinding wheel.