钢管2023，Vol.52Issue(6)：21-25,5.DOI:10.19938/j.steelpipe.1001-2311.2023.6.21.25
一种高强度低合金钢管分层分析
Analysis for Lamination Defect of a Certain Type of Hi-strength Low Alloy Steel Pipe
牛亮 1周勇 1赵映辉 1周慧敏1
作者信息
- 1. 衡阳华菱钢管有限公司,湖南衡阳 421001
- 折叠
摘要
Abstract
It is identified via relevant the micro-morphology and dynamic analyses that the lamination defect of theΦ374.65 mm×18.65 mm 110S casing is caused by the excessive content of the Al2O3-SiO2-CaO complex inclusion.And it is further identified via the inversion check of the process that the said excessive inclusion content is caused by poor effect of the ladle soft argon blowing,and the ladle slag discharge.Accordingly the inclusion qualification rate is increased from 91.34％up to higher than 98％by means of actions aiming at systematically controlling the steel inclusion,including assuring proper ladle argon blowing effect,remaining steel operation,regulating the long nozzle inserting procedure and the slag overflowing procedure,and optimizing the tundish,etc.As a result the lamination defect of the steel pipe has never occurred.关键词
低合金钢/钢管/分层缺陷/复合夹杂物Key words
low alloy steel/steel pipe/lamination defect/complex inclusion引用本文复制引用
牛亮,周勇,赵映辉,周慧敏..一种高强度低合金钢管分层分析[J].钢管,2023,52(6):21-25,5.
