How to make synthetic diamonds Direct synthetic diamonds use instantaneous static ultra-high pressure and high temperature technology, or dynamic ultra-high pressure and high temperature technology, or a combination of the two technologies, so that carbonaceous raw materials such as graphite are directly converted from solid or molten state into diamond. This method The diamond obtained is a micron-sized polycrystalline powder. The flux method synthetic diamond uses static ultra-high pressure (50-100kb, that is, 5-10GPa) and high temperature (1100-3000°C) technology to generate diamond through the reaction of carbonaceous raw materials such as graphite and certain metals (alloys). Its typical crystal state For the cube (hexahedron), octahedron and hexa-octahedron and their transitional forms. The main application value that shows important application value in industry is the static pressure flux method. The output of abrasive-grade synthetic diamonds obtained by this method has exceeded that of natural diamonds. The problems to be further solved are to increase the coarse-grain ratio, increase the conversion rate and improve the crystal quality. At present, the formation of high-quality large-grain single crystal diamond is being studied in the laboratory using static pressure flux method. The seeded epitaxial growth method used to obtain large single crystals weighing about 1 carat; after a slight improvement with general experimental techniques, crystals of about 2 to 4 millimeters were obtained. Using this method also grows and sinters large particles of polycrystalline diamond. The latter has been used in industry. The key issue is to further improve the compressive strength, impact strength, wear resistance and resistance of this polycrystalline diamond. Comprehensive performance such as heat resistance. Epitaxial method Synthetic diamond is epitaxially grown on diamond seed crystals or some materials that act as substrates by using carbon sources precipitated during pyrolysis and electrolysis of certain carbonaceous materials. Wuci reaction method A method invented by Chinese scientists: Let carbon tetrachloride and sodium react at 700 ℃ to produce diamond. However, a large amount of graphite is generated at the same time. Synthetic diamonds can not only be processed into valuable jewellery, they are also promising in industry. The use of synthetic diamond Synthetic diamond has high hardness and good wear resistance, and can be widely used in cutting, grinding and drilling; due to its high thermal conductivity and good electrical insulation, it can be used as a heat sink for semiconductor devices; it has excellent light transmission Resistance and corrosion resistance are also widely used in the electronics industry. 1. Manufacture resin bond abrasive tools or grinding tools, etc. 2. Manufacture of metal bond abrasive tools, ceramic bond abrasive tools or grinding tools, etc. 3. Manufacturing general stratum geological drilling bits, semiconductor and non-metallic materials cutting processing tools, etc. 4. Manufacturing hard-stratum geological drill bits, correction tools and non-metallic hard and brittle materials processing tools, etc. 5. Resin, ceramic bond abrasive tools or grinding, etc. 6. Metal bond abrasive tools and electroplated products. Drilling tools or grinding, etc. 7. Dramatic cutting, drilling and correction tools, etc.