前言 LD转炉采用底吹搅拌在生产操作和冶金原理上都具有许多优点,这种炼钢法在控制钢水成分方面特别灵活。一个很重要的方面是勿需经过真空处理即能将碳含量降低到≤0.020％。例如对于在罩式炉内退火的超深冲钢要降低屈服极限来说就非常重要。在钢厂设计和生产钢种的特定条件下,如能在转炉内直接将碳含量降到很低是有好处的。本文第一部分阐述将碳含量降低到很低的几种方法。关于在底吹搅拌的转炉中冶炼碳含量为0.02～0.01％的低碳钢时的冶金关系已为人 INTRODUCTION The use of bottom-blowing agitators in LD converters offers many advantages both in terms of production operation and metallurgy, which is particularly flexible in controlling the composition of the molten steel. A very important aspect is the ability to reduce the carbon content to ≤0.020% without vacuuming. For example, it is very important for the ultra-deep-drawn steel annealed in the hood furnace to reduce the yield point. Under certain conditions in the steelworks design and production of steel grades, it is advantageous if the carbon content is reduced very low directly in the converter. The first part of this article describes several ways to reduce carbon content to very low levels. The metallurgical relationship with smelting low carbon steels with a carbon content of 0.02 to 0.01% at the bottom of the converter is already human