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试验表明在20钢连铸流喂丝中加入稀土元素时，明显改善结晶器中钢液的流场，从而增强了钢液自身的脱氧能力，使连铸坯中的含氧量进一步降低。
The results show that the addition of rare earth elements in the feeding of 20 steel continuous casting stream can obviously improve the flow field of the molten steel in the mold, thereby enhancing the deoxidation ability of the molten steel and further reducing the oxygen content in the slab.