Tool grinding technology part one | Prctools.com
The common tool materials in the tool grinding include high-speed steel (HSS), powder metallurgy high-speed steel (PM-HSS), hard alloy (HM), PCD, CBN, cermet and other super-hard materials . The high-speed steel tool is sharp, the toughness is good, the hardness of the hard alloy tool is high, and the toughness is poor. The density of the hard alloy cutter is obviously higher than that of the high-speed steel tool. The two materials are the main materials of the drill, the reamer, the hammer and the tap. The performance of the powder metallurgy high-speed steel is between the two materials, and is mainly used for manufacturing the rough cutting knife and the tap. The high-speed steel cutter is not sensitive to the impact because of the good toughness of the material. But the hardness of the hard alloy tool is high and brittle, is sensitive to the collision, and the cutting edge is easy to jump. Therefore, during the grinding process, it is necessary to care for the operation ...