A, high-speed steel.
CNC lathe parameters of high-speed steel refers to the high alloy tool steel containing more tungsten, chromium, molybdenum, vanadium and other alloying elements. High-speed steel can be divided into general high-speed steel and high-performance high-speed steel according to different uses.Line Cutting
General high-speed steel has a certain hardness (63-66HRC), wear resistance and high toughness. When processing ordinary steel, the cutting speed is 50-60m/min, not suitable for high-speed cutting and super hard material processing. W18Cr4V and W6Mo5Cr4V2 are the main brands. The latter is better than the latter in strength and toughness, but the thermal stability is poor.
Second, cemented carbide carbide.
Powder metallurgy products, made of high hardness, high melting point carbide (WC, TiC, TaC, NbC, etc.). , Co, Mo, Ni and other elements as binding agents. Its room temperature hardness can reach 78-82HRC, can be used at 800-1000℃ high temperature, and its cutting speed is 4-10 times that of HSS. However, its impact toughness and bending strength are much lower than that of HSS, so it is rarely used as an integral tool. In practice, carbide tool blocks are usually fixed to the tool body by welding or mechanical clamping.Big Water Mill