At present, the production of ground ore bits are made of cemented carbide materials. The cemented carbide used in the production of ground ore bits must have excellent properties such as high hardness, wear resistance and corrosion resistance. In addition, carbide is widely used as a tool material, but also can be used to make rock drilling tools, mining tools, drilling tools, measuring gauges, wear parts, metal grinding, cylinder lining, precision bearings, nozzles and so on. Compared with the alloy tool of the same grade, the tool made of cemented carbide has a three times longer service life and a cutting speed of 25% -50%. The fourth generation of coating tools has appeared in the 1970s and can be used to cut hard-to-machine materials.
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