The disc brush is specially used to deal with the surface of metal, such as cast iron, aluminum, steel. Metal parts produced by cutting or die casting will inevitable have burr or flanging. If the burrs are not removed, it will lead to the accumulated errors when we assemble these parts and affect the accuracy of the finial products. Besides, these burrs will more likely to rust and affect the service life the products. For these reasons, the deburring process is very essential.