Grade quality, particle size and density of diamond plays a decisive role for diamond tool.In the synthesis of diamond, cubic tonnage of high-strength technology has become mature, Silicon diamond wire saw  is continuous improvement, catching up with the synthetic diamond is also beginning to take shape, the synthesis of powder catalyst, carbon, pyrophyllite raw materials continue to perfect.A key factor to improve the diamond blade cutting efficiency and life is to improve the control of the carcass on the diamond. The carcass is good holding force on the diamond, the diamond would not be premature tooth loss, and has the largest protruding height, cutting sharp, high efficiency.Improve the mechanical holding force. This is the formation of compressive stress due to contraction of the metal powder sintering hold on the diamond. The compressive stress is due to the different thermal expansion coefficients of diamond and matrix metal due to sintering or crystal formation and growth caused by the volume change. As the matrix yield strength is limited, so the compression stress and mechanical holding force is limited.