| 摘要 |
A cast low carbon steel formed by a method of forming and refining molten silicon-bearing steel by addition of a calcium-containing silicon additive. Determine when the amount of calcium in the calcium-containing silicon additive is more or less than the amount of calcium desired in the finished steel. When it is more than the amount of calcium desired in the finished steel, add the amount of calcium-containing silicon additive corresponding to the excess calcium early during steel deoxidation or in refining to combine with oxygen, sulfur and other impurities in refining, and add the calcium-containing silicon additive containing the total amount of calcium desired in the finished steel after the desulfurization of the molten steel and before casting. When the amount of calcium in the calcium-containing silicon additive does not provide the total amount of calcium desired in the finished steel, add an additional amount of calcium after desulfurization of the molten steel and before casting to the molten steel during refining.
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