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发明公开
CN102409134A 一种转炉流程生产23MnB钢的方法 有权

一种转炉流程生产23MnB钢的方法
摘要：
本发明公开了一种转炉流程生产23MnB钢的方法，属于冶金领域。本发明所要解决的技术问题是提供一种使小规格连铸机能够顺利浇铸的转炉流程生产23MnB钢的方法，包括：a、转炉冶炼；b、出钢时加入电石使钢液氧活度在0.0025％以下；c、LF炉精炼，精炼加热前每吨钢加入电石3.5～4.5kg，加热过程中每吨钢加入金属铝0.15～0.45kg，当钢水温度加热到1570～1585℃时停止加热，加入铝使铝含量在0.011～0.016％，再加入钛使钛含量在0.02～0.06％，加入硼使硼含量在0.0005～0.003％；d、连铸。本发明方法不仅能够适用于大规格的连铸机，而且能在小规格连铸机上顺利浇铸。
摘要（英）：

The invention discloses a method for producing 23MnB steel based on a converter flow path and belongs to the field of metallurgy. The invention aims at solving the technical problem of providing a method for producing 23MnB steel based on a converter flow path by which a small-size continuous casting machine can conduct smooth casting. The method comprises the following steps of: a, smelting in aconverter; b, when steel tapping, adding calcium carbide so that the oxygen activity of molten steel is less than 0.025%; c, refining in an LF (ladle furnace) and heating after 3.5-4.5kg of calcium carbide is added in each ton of steel, adding 0.15-0.45kg of metal aluminum in each ton of steel in the heating process, when molten steel is heated to 1570-1585 DEG C, stopping heating, and then adding titanium until the content of titanium is 0.02-0.06%, and adding boron until the content of boron is 0.0005-0.003%; and d, continuously casting. The method of the invention is applicable to a large-size continuous casting machine and can perform smooth casting on the small-size continuous casting machine.

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