摘要
分析了首钢京唐公司IF钢镀锌板表面夹杂物缺陷及IF钢连铸工艺。结果表明，开浇第2块连铸坯、换水前后连铸坯和连浇过渡坯夹杂物缺陷概率高是造成IF钢镀锌板表面夹杂物缺陷的主要原因。采取高频快涨的连铸机拉速控制、留钢操作、提高耐火材料质量、规范换水口前后化渣操作、大包水口浸入式开浇、RH炉化冷钢与洗槽、优化中间包结构以及连铸坯火焰清理等措施后，IF钢镀锌板表面夹杂物缺陷显著降低。
The surface defects and continuous casting process of IF steel for galvanized steel sheet of SGJT were analyzed. The results showed that the main reasons of the surface defects were the higher possibility of inclusions contents in the second slabs, nozzle-changed slabs and middle slabs. The IF steel surface defects were decreased remarkably through several measures such as steel-remaining, refractory quality improving, cold steel removing in RH and tundish structure opitimizing.
出处
《首钢科技》
2013年第4期24-28,共5页
Shougang Science and Technology
关键词
冷轧镀锌板
夹杂缺陷
分析
控制
cold rolled galvanizing sheet, surface Inclusions, analysis, control
