【摘要】 针对涟钢CSP生产Q235B和SPHC薄板钢的生产工艺,采取示踪剂示踪、系统取样、综合分析的方法,对Ar站前后、LF处理前后、Ca处理后、中间包内钢中和铸坯中T.O、显微夹杂物和大型夹杂物的变化进行了系统研究。研究表明,在LF精炼过程中Q235B和SPHC钢的脱氧率都比较高,精炼处理后到铸坯过程中钢中T.O有较大幅度增加。精炼过程去除夹杂的效果比较明显,夹杂物改性效果明显。更多还原

【Abstract】 In light of the production technology CSP adopted in refining Q235 & SPHC steels in Lianyuan Steel Corporation the variation of total oxygen content and micro & macro inclusions in the tundish and thin slabs before and after Argon bubbling in the Argon station and LF treatment and Ca treatment has been studied systematically by tracing with tracer,sampling and analyzing comprehensively.Results show that in the process of LF refining the deoxidation rate of Q235 & SPHC steels is relatively higher and in the time period from refining to the continuously casting the total oxygen content in the steel drastically increases and in the refining stage the non-metal inclusions in steel are satisfactorily removed and apparently modified.更多还原