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合金球铁用带有200号坩埚的感应电炉熔炼,以镍硅镁合金作球化剂,生产球墨铁件,铸件浇铸后经1040℃正火,并用620℃退火,获得Ni20Cr2奥氏球铁汽轮机转动环。
The alloy ductile iron is melted by an induction electric furnace with a crucible No. 200, a nodularizing agent is used as a nodular nickel-silicon-magnesium alloy to cast ductile iron after the casting is cast, normalized at 1040 DEG C and annealed at 620 DEG C to obtain a Ni20Cr2 austenitic ductile iron steam turbine Turn the ring.