摘要
基于示踪剂生产试验,通过对国内某钢厂BOF-LF-CC工艺生产的SPHC钢的洁净度和缺陷进行全流程系统取样和综合分析。结果表明,LF出站时钢液中大型夹杂物由钙处理后的19.6 mg/（10 kg）升至36.7 mg/（10 kg）。LF精炼后至中间包浇注,钢液中氧质量分数由23×10^-6升高至（36-48）×10^-6,存在一定的二次氧化现象。铸坯和热轧板卷中夹杂物示踪剂结果显示,精炼渣、耐火材料、中间包覆盖剂以及结晶器保护渣均有不同程度的卷渣或侵蚀,其中精炼渣的卷入和中间包耐火材料的侵蚀最为严重。
Based on tracer production experiment,the cleanliness of SPHC steel produced by BOF-LF-CC process in a domestic steel plant was investigated by the way of sampling systematically and comprehensive analysis. The results showed that the mass of macro-inclusion after LF refining increased to 36.7 mg/（10 kg） compared with that after calcium treatment which was 19.6 mg/（10 kg）. From the tapping of LF refining to tundish,the average mass percent total oxygen in molten steel increased from 23×10^-6to（36-48）×10^-6and existed a certain degree of re-oxidation. The results of tracer experiment revealed that serious entrapment of refining slag during LF refining and erosion of refractory in tundish occurred.
出处
《钢铁》
CAS
CSCD
北大核心
2015年第2期27-31,80,共6页
Iron and Steel
基金
国家自然科学基金资助项目(51304016
51374021)
中央高校基本科研业务费资助项目(FRF-TP-14-114A2)
