连铸结晶器插入钢带对连铸坯质量的影响  

Effects of continuous casting billet quality with steel strip's feeding into continuous casting crystallizer

作　　者：于林辉 张振山[1,2] Shevchenko Anthony 沈明钢[4] 王一雍[1,4] 

机构地区：[1]营口东邦冶金设备耐材有限公司技术中心,辽宁营口115100 [2]辽宁科技大学应用技术学院,辽宁鞍山114051 [3]乌克兰国家科学院黑色冶金研究所,第聂伯彼得罗夫斯克49125 [4]辽宁科技大学材料与冶金学院,辽宁鞍山114051

出　　处：《钢铁》2015年第11期53-56,共4页Iron and Steel

基　　金：国家国际合作专项资助项目(2013DFR70500)

摘　　要：中心偏析和等轴晶率是评价连铸坯内部质量的重要参数,而用于改善内部质量的电磁搅拌、微合金化等技术相对复杂,实施成本高。通过对结晶器插入钢带,通过钢带的熔化吸热有效地降低结晶器内钢液过热度,可以提高铸坯内部质量。讨论了在给定工艺条件下钢带插入对连铸坯质量的影响。计算和生产试验结果表明,插入钢带可以明显降低钢水过热度;插入钢带的连铸坯疏松和等轴晶率等指标均比没有插钢带的连铸坯好,且吨钢插入钢带量增加可以增加等轴晶率,有利于改善钢坯内部质量。Center segregation and equiaxial crystal ratio are the important parameters to evaluate the quality of continu- ous casting slab. And the technologies of improving internal quality, such as electromagnetic stirring and micro-alloying technology, are complex relatively and high cost during implementation. In this study, steel strip was fed into the continu- ous casting mold, resulting in a lower superheat of molten steel due to the absorption of heat. This study also discussed the effect of steel strip weight on the quality of slab.. The results of calculation and experiment show that, the liquid steel su- perheat can be obviously reduced by steel strip feeding. The internal quality （osteoporosis, equiaxial crystal ratio etc.）of continuous casting slab with strip feeding is better than the one without strip feeding. And when the weight of the strip in- creases, the equiaxial crystal ratio increases, too. And the technology of strip feeding is helpful to improve internal quality of billet.

关 键 词：连铸 插钢带 内部质量 

分 类 号：TF777[冶金工程—钢铁冶金]