Angle grinders are tools for grinding, lapping and polishing. Most angle grinders are artificial abrasives made of abrasives and binders. There are also natural abrasives directly processed from natural ore rocks. Angle grinding discs are widely used in machine manufacturing and other metalworking industries. It is also used in the processing of non-metallic materials such as food processing, paper industry and ceramics, glass, stone, plastic, rubber, and wood.
The hardness of the angle grinder mainly depends on the amount of binder added and the density of the abrasive tool. The abrasive grains that fall off easily indicate that the abrasive tool has low hardness. On the contrary, it means that the hardness is high. The hardness level is generally divided into seven grades: super soft, soft, medium soft, medium, medium hard, hard and super hard. A number of sub-levels can be further subdivided from these levels. The most commonly used methods for measuring the hardness of abrasive tools are the hand cone method, the mechanical cone method, the Rockwell hardness test method and the sandblast hardness test method.
The hardness of the angle grinder has a corresponding relationship with its dynamic elastic modulus. This is beneficial to use the audio method to measure the dynamic elastic modulus of the angle grinder to express the hardness of the angle grinder. In the grinding process, if the material hardness of the workpiece to be ground is high, the abrasive tool with low hardness is generally selected. On the contrary, use angle grinding discs with high hardness.

Cndome® focuses on making resin grinding wheels, and can make various non-standard customizations according to customers’ drawings or samples. Do you need samples or price lists? contact us +86 18796960868 for samples,size 4″ to 9″