Compare the advantages and disadvantages of high speed steel and cemented carbide
Hard alloy powder is: high hardness metal carbide to micron order, with cobalt, molybdenum, nickel and other binder, under high temperature and high pressure sintering temperature. The carbide content in hard alloy than high-speed steel, high hardness, good abrasion resistance (HRC75--80).Hard alloy red hardness can reach 800-1000 degrees.Carbide cutting speed is 4 - 7 times higher than that of high speed steel, and cutting efficiency is highThe disadvantage is that the bending strength is low, the impact toughness is poor, the brittleness is great, and the impact and vibration resistance are low
Must be in a hardened state, in high speed steel iron, chromium, tungsten and carbon forming hard carbide can improve the wear resistance of steel (hardness of HRC6468). Another part of tungsten dissolved in the matrix, increase the hardness of steel red.High speed steel can reach 650 degrees of red hardnessHigh speed steel has good strength and toughness, cutting edge is sharp after grinding, and its quality is stable. It is used to make small and complex cutting tools
High speed steel, high carbon steel, can be divided according to chemical composition of tungsten and molybdenum in steel, cutting performance is divided into high performance of ordinary high speed steel, high speed steel. Through strengthening heat treatment of high speed steel.
