摘要
针对HRB500热轧带肋钢筋出现的延伸率偏低的问题,采用金相、扫描电镜能谱分析等方法,对不合格试样的宏观成分、拉伸断口形貌、夹杂物形貌、成分和金相组织进行研究。分析结果表明,夹杂物含量高、金相组织异常是引起HRB500热轧带肋钢筋延伸率偏低主要原因,可通过吹氩促进夹杂物上浮来均匀钢水成分,加强生产过程控制等措施解决该问题。
In order to tackle with the problem of low elongation of HRB500 hot rolling ribbed rebar, study was carried out on the macro composition, tensile fracture morphology and inclusion morphology, composition and metallographic structure of unqualified sample by means of metallographic and SEM energy spectrum analysis methods. Analysis results showed high inclusion content and abnormal metallographic structure were main reasons for the low elongation of HRB500 hot rolling ribbed rebar. The problem could be solved by measures of bringing homogenization to liquid steel by argon stirring to facilitate the inclusion to float and enhancing production process control.
出处
《天津冶金》
CAS
2015年第1期40-42,共3页
Tianjin Metallurgy
基金
2012年国家级大学生创新创业训练计划项目(201210703059)
校青年科技基金(QN1317):陕西省教育厅产业化项目(2013JC11)
西安市工业应用技术研究项目CXY1349(6)
关键词
钢筋
延伸率
夹杂物
组织
分析
rebar
elongation
inclusion
structure
analysis
