小方坯冷镦钢SWRCH22A非稳态铸坯夹杂物分布  

Analysis on Distribution of Inclusions in Unsteady Casting Blank for SWRCH22A Cold Headed Steel Manufactured by Billet

作　　者：孙振宇[1] 李叶忠 赵晨光[1] 李泽林[1] 王成青[1] 高立超[1] 翟利平[2] Sun Zhenyu;Li Yezhong;Zhao Chenguang;Li Zelin;Wang Chengqing;Gao Lichao;Zai Liping(General Steelmaking Plant of Angang Steel Co.,Ltd.,Anshan 114021,Liaoning,China;Science and Technology and Quality Department of Angang Steel Co.,Ltd.,Anshan 114021,Liaoning,China)

机构地区：[1]鞍钢股份有限公司炼钢总厂,辽宁鞍山114021 [2]鞍钢股份有限公司科技质量部,辽宁鞍山114021

出　　处：《鞍钢技术》2018年第6期21-23,39,共4页Angang Technology

摘　　要：为了实现小方坯冷镦钢SWRCH22A铸坯的分类管理,对连铸非稳态铸坯分段取样并采用金相分析方法确定了夹杂物的分布情况。结果显示,小方坯冷镦钢SWRCH22A非稳态铸坯不同位置的夹杂物尺寸随着浇注长度的增加而减小。建议将小方坯冷镦钢SWRCH22A非稳态铸坯的头坯1～6 m报废,7～16 m以及中间过渡坯降级,而尾坯正常使用。In order to achieve the sort management for a casting blank for producing the SWRCH22A cold headed steel by a billet, the distribution state of the inclusions in these samples were determined by metallographic analysis by taking some samples in sections of an unsteady casting blank by continuous casting. The analytical results showed the size of the inclusions in different positions of the unsteady casting blank was reduced with the casting length increasing. It were suggested that the head end of the casting blank in the range from 1 to 6 meters should be rejected, the part of the head end in the range from 7 to 16 meters and the intermediate transition part of the blank should be degraded while the tail end of the blank could be used normally.

关 键 词：冷镦钢 小方坯 非稳态铸坯 夹杂物 

分 类 号：TF537[冶金工程—钢铁冶金]