Application of diamond tools in electronic and electrical industry

The diamond wire drawing die can control various metal wires with diameters ranging from millimeter to micron for the electronic and electrical industry. The accuracy can reach 1~2 microns. For example, drawing micron-level platinum wire, tungsten wire, and ultra-fine copper wire. It can withstand high pressure, friction, and high temperatures of hundreds of degrees, and is not prone to wear and deformation. The durability is dozens to hundreds of times that of carbide wire drawing dies.

Compared with natural diamond wire drawing dies, polycrystalline diamond wire drawing dies have their own unique features. There is no anisotropy like natural diamond and it is not easy to split. The drawing hole can always maintain a perfect circle. It is worth noting that although the hardness of polycrystalline diamond is lower than that of natural diamond, its lifespan is longer than the latter. The lifespan of a good polycrystalline diamond wire drawing die is several times that of natural diamond. The price is only 1/3~1/5 of the natural diamond wire drawing die. The effect on some transition metals is poor, and the polishing of wire drawing holes is also difficult.

Ferrite magnetic materials and some insulating materials used in the electrical appliance industry, such as bakelite, epoxy resin fiberboard and other insulating materials, are processed with diamond flake grinding wheels, with less waste and high efficiency. It solves the problems of burns, poor roughness, inaccurate dimensions, and high waste when cutting with other tools. There are also unique features in processing high-alumina ceramic insulators. For example, it can process high-voltage electrical porcelain containing 35% corundum, which is a material that is difficult to process with silicon carbide.