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特殊用途超硬型高速钢(W_(12)Cr_4V_3Mo_3Co_5Si)可用来制造钻头、滚刀和拉线刀,并适于加工超高强度钢、铁基高温合金和铸造高温合金。其化学成分见表1: 这种高速钢有比较好的机械加工性能,可磨削性介于M_(42)(W_2Mo_9Cr_4VCo_8)和高钒高速钢(W_9Cr_4V_5)两者之间,较高钒高速钢磨削容易,比M_(42)磨削困难。用单晶刚玉砂轮磨削效果较好,用碳化硅砂轮和三氧化二铝砂轮磨削效果较差。
Special Purpose Superhard High Speed Steel (W_ (12) Cr_4V_3Mo_3Co_5Si) can be used to make drill bits, hobs and wire cutters and is suitable for machining ultra-high strength steels, iron-based superalloys and foundry superalloys. The chemical composition shown in Table 1: This high-speed steel has better machinability, grindability between M_ (42) (W_2Mo_9Cr_4VCo_8) and high vanadium high-speed steel (W_9Cr_4V_5) between the two, higher vanadium high-speed steel Grinding easier, than the M_ (42) grinding difficult. Single crystal corundum grinding wheel grinding better, with silicon carbide grinding wheel and aluminum oxide grinding wheel less effective.