High Level Material High Carbon Silicon

The addition of rare earth and the composite metamorphism treatment of rare earth, vanadium and titanium in high-carbon silicon-manganese cast steel can refine the solidification structure, especially the composite metamorphic treatment can significantly refine the solidification structure, and the average grain diameter can be reduced from 80 μm to 40 μm.

1.The main types of inclusions in high-carbon silicon-manganese cast steel are studied in detail, and it is found that in addition to the common sulfide inclusions, there are also silicon-containing inclusions, aluminum-containing inclusions, calcium-containing inclusions and rare earth inclusions in high-carbon silicon-manganese casting steels. The inclusions in high-carbon silicon-manganese cast steel can be significantly reduced by adopting technological measures such as high-temperature furnace of molten steel, argon blowing treatment and static treatment after argon blowing, and the inclusion content can be controlled below 0.1%. The toughness of high-carbon silicon-manganese cast steel was significantly improved after argon blowing to remove inclusions, especially the impact toughness increased by 21.2% to 16.6J/cm2.

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