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现代化对特殊钢质量的要求不断提高,促进了高纯净度特殊钢精炼技术的发展。以生产特殊钢为重点(占钢产量的82％)的日本神户钢铁公司,具备现代化的典型特殊钢生产工艺流程,即由铁水预处理炉→转炉→钢水炉外精炼(电弧加热,脱气处理,喷粉处理)→连铸所构成的生产流程。因该生产流程把全部炼钢生产过程合理地分步完成,因而能大量生产高纯净度特殊钢。各步工序的主要特点如下。 铁水预处理 在高炉出铁场脱硅后装入转炉型铁水预处理专用炉(H炉)中,通过顶吹喷枪喷入石
The modernization of the special steel quality requirements continue to improve, and promote the development of high-purity special steel refining technology. Kobe Steel Co., Ltd. (KOBE), which focuses on the production of special steels (82% of the total steel production), is equipped with modern and typical special steel production processes ranging from hot metal pretreatment furnaces → converters → molten steel furnace refining (arc heating and degassing , Dusting) → continuous casting of the production process. Because of the production process to all steelmaking process is completed in a reasonable step by step, which can produce large quantities of high purity steel. The main features of each step are as follows. Hot metal pretreatment in the blast furnace tapping furnace after desalination into the converter type hot metal pretreatment furnace (H furnace), through the top blowing gun into the stone