微合金非调质无缝钢管内折缺陷分析
ANALYSIS ON INFOLDING IN MICROALLOYED NON-QUENCHED AND NON-TEMPERED SEAMLESS STEEL PIPE
摘 要
N80级微合金非调质无缝钢管在生产中出现内折缺陷。采用金相检验、夹渣物的化学成分分析及扫描电镜观察等方法对该缺陷进行了分析。结果表明,连铸坯中心存在大量夹渣物,致使在穿孔轧制过程中形成内折缺陷。提出了改进措施。
非调质
无缝钢管
内折缺陷
连铸坯
夹渣物
Microalloy
Non-quenching and non-tempering
Seamless steel pipe
Infolding
Continuous casting billet
Slag inclusion
Abstract
The infolding in N80 grade microalloyed seamless pipe steels was analyzed by microscopic test,SEM and chemical composition analysis of slag inclusion. The result shows that slag inclusion in continuous casting billet cause the infolding,and the way to reduce infolding by improving the quality of billet is suggested.
中图分类号 TG335.7
所属栏目 试验与研究
基金项目
收稿日期 2006/11/7
修改稿日期
网络出版日期
作者单位点击查看
备注方 剑(1980-),男,硕士研究生。
引用该论文: FANG Jian,YUAN Ze-xi. ANALYSIS ON INFOLDING IN MICROALLOYED NON-QUENCHED AND NON-TEMPERED SEAMLESS STEEL PIPE[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2007, 43(7): 325～327
方 剑,袁泽喜. 微合金非调质无缝钢管内折缺陷分析[J]. 理化检验－物理分册, 2007, 43(7): 325～327
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参考文献
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【2】Byrne M. The sources of exogenous inclusions in continuous cast of aluminum-killed steels［J］. I&S M,1988,15(6):41-50．
【3】戴云阁,杜德信,蔡锡年.连铸坯中的非金属夹杂物［J］,钢铁钒钛,1997,8(3):34-39．
【4】章 军,王 勇,王全礼.合成渣精练法控制钢中夹杂物形态［C］.2003中国钢铁年会论文集.北京:冶金工业出版社,2003,6:201-206．
【5】Das G,Ghosh Sukomal,Ghosh Chowdhury S. Investigation of sub-surface cracks in continuous cast billets［J］. Engineering Failure Analysis,2003(10):363-370．
【6】Thomas B G,Jenkins M S,Mahapatra R B. Investigation of strand surface defects using mould instrumentation and modeling［J］. Ironmak Steelmak Steel World,2004,31(6):485-494．
【7】Melander Arne. A finite element study of short cracks with different inclusion types under rolling contact fatigue load［J］. Int J Fatigue,1997,19(1):13-24．
【8】Bernsmann G P. Inclusion control in steel tire cord［J］. The Minerals,Metal & Material Society,1996(12):123-133．
【9】陈 坤,周 勇.减少炼钢连铸钢中夹杂物的工艺措施［J］.河北冶金,2004(5):4-8．
【10】张爱民,李建民,关凤纯.连铸板坯中夹杂物的行为研究［J］.钢铁,2000,6(11):22-24．
【11】张爱民.低合金钢中的塑性夹杂物行为研究［J］.理化检验-物理分册,2003,39(6):288-294．
【12】郭殿锋,周 昱,侯 雷. 180mm连铸坏轧制无缝管内折缺陷调查［J］.包钢技,2000,26(2):45-49．
【13】李延生.连铸坯缺陷的成因及防止对策［J］.炼钢,1998(3):55-58．
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