4 kinds of high-powered high-speed steel
- source:TANAY CNC Machining
67m/s. Because contain vanadium the capacity is much, its grinding processability is poorer, and overheat sensitivity is strong, oxidation decarbonization liability is bigger, when using, want to master heat treatment craft strictly. 3) the thermal stability that cobalt joins to be able to raise steel in high-speed steel of cobaltic high-speed steel, normal temperature and high temperature hardness and fight oxidation ability. Improve the thermal conductivity of high-speed steel, reduce coefficient of friction, raise cutting rate thereby. The M42 in be like American M40 series (W2Mo9Cr4VCo8) , normal temperature hardness amounts to 67 ～ 69HRC, 600 degrees of hardness when achieve 54 ～ 55HRC.
Agree with the high-speed steel cutting tool of material of difficult treatment of etc of alloy of production treatment high temperature, cobaltic alloy. Because our country is cobaltic natural resources is limited, be produced at present and use not much. 4) because tall vanadium high-speed steel forms the carbonization vanadium dispersion of a large number of tall hardness, wear-resisting to be in steel, raised the wearability of high-speed steel, and can refine grain and the overheat sensitivity that reduce steel. Agree with treatment vulcanite, plastic wait to wear away to cutting tool serious stuff; Cutting tool of the poor to low speed precision work that cut bits, if broach, reamer and silk are attacked,wait, tall vanadium high-speed steel has longer life. Its are main defect is grinding processability is differred, main brand has W6Mo5Cr4V3, W12Cr4V4Mo to wait. Our country is raising the applied level of high-powered high-speed steel hard, if develop W12Mo3Cr4V3Co5Si of low cobaltic high-speed steel, the result when processing high strenth steel is favorable. In addition, still B212) of abbreviation of B2O1) of abbreviation of W6Mo5Cr4V5SiNbAl(of aluminous high-speed steel of the niobium that contain silicon, W18Cr4V4SiNbAL(waits, silicon, aluminium increases the hardness of steel and thermal stability, niobium can raise wearability and tenacity, basically use at material of cutting difficult treatment, but the grinding performance of this kind of steel is very poor. CNC Milling CNC Machining