福建冶金2024，Vol.53Issue(1)：51-54,78,5.
Q355BS中厚板皮下气泡缺陷的原因分析与解决
Cause Analysis and Solution of Subcutaneous Bubble Defect of the Medium and Heavy Plate Q355BS
陈娥1
作者信息
- 1. 福建三宝钢铁有限公司,福建漳州 363000
- 折叠
摘要
Abstract
In order to solve the subcutaneous bubble defect of the medium and heavy plate Q355BS,metallographic microscopy is used to detect the sample wich defect of subcutaneous bubble,LECO oxygen、nirtrogen and hydrogen gas analyzer is used to detect the mass fraction of oxygen、nirtrogen and hydrogen in the plate Q355BS,ARL8820 Direct-reading spectrometer is used to detect the mass fraction of chemical composition in the plate Q355BS,oxygen in the liquid steel is removed deeply,reduce the use of fluorite in the refining process of ladle furnace,reduce the mass fraction of fluorine in the mould powder,the subcutaneous bubble defect of the medium and heavy plate Q355BS was solved.The results show that:the possibility of subcutaneous bubble defect of the medium and heavy plate Q355BS is low,when the mass fraction of Als in the steel greater than 0.0040%,the amount of fluorite used in the refining process per tone less than 1.5kg,the mass fraction of fluorine in the mould powder less than 6.5%.关键词
Q355BS/氟含量/皮下气泡/萤石/结晶器保护渣Key words
Q355BS/fluorine content/subcutaneous bubble/fluorite/mould powder引用本文复制引用
陈娥..Q355BS中厚板皮下气泡缺陷的原因分析与解决[J].福建冶金,2024,53(1):51-54,78,5.
