In the diamond tools’ manufacture, brazing is a welding method using silver solder slices to stick segments to the diamond tool’s body. It is a physical combination. It not only consumes expensive silver solder slices, but has other disadvantages, such as low welding speed and big welding deformation. More importantly, its welding toughness is not very high. When the temperature of the diamond tool’s working part rises to a high degree in the job, the welding positions will get looser, and the segments may even fall off and cause a safety problem.