化学成分对DL05电缆钢导电率的影响.pdf

第37卷第6期
特殊钢
Vol 37. No6
60·2016年12月
SPECIAL STEET
December 2016
化学成分对DL05电缆钢导电率的影响
黄红兵彭其春1徐静波习天辉李伟朱国栋
(1武汉科技大学钢铁治金及资源利用省部共建教育部重点实验室,武汉430081;2武汉钢铁《集团)公司,武汉430083
摘要DLO5钢的治金流程为铁水-PB脱硫处理-BOF-吹瓴-RI-200mm×200mm方坏连铸-轧制成6.5mm
线材。分析了生产的256炉次的DI05钢化学成分对导电率的影响,得出钢中元素总含量或钢中Mn含量増加,钢
的导电率降低,但当钢中元素总含量(不含Mn)增加,钢的导电率增加不显著,因此Mn含量对钢导电率的影响最
大。提高钢的洁净度,亦有利于改善钢的导电率。通过将原先DL05钢的化学成分控制范围(/%:≤0.10C,≤
0.10Si,≤0.35Mn,≤0.030P,≤0.030S)优化为(/%)≤0.02C,≤0.03Si,≤0.12Mn,≤0.025P、≤0.015S,和RH精
炼过程有效控制钢的洁净度后,256炉次检验结果表明,该钢导电率≥16%的炉次比率从原63.25%提高到
93.75%
关键词DLO5电缆钢BOF-RH导电率Mn化学成分
Effect of Chemical Composition on Electric Conductivity
Ratio of Steel DLO5 for Cable
Huang Hongbing Peng Qichun ,Xu Jingbo, Xi Tianhui, Ii Wei and Zhu Guode
(1 Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Educatio/ ng
Wuhan University of Science and Technology, Wuhan430081; 2 Wuhan Iron and Steel(Group) Co, Wuhan 430083)
Abstract The metallurgical flowsheet for steel DL05 is hot metal- PB desulphurization treatment- Bof-argon blo
wing-rh-200 mm x 200 mm blooms casting-rolled o (6. 5 mm rod products. The effect of produced 256 heats steel D05
chemical composition on electric conductivity ratio is anal zed, it is obtained that with increasing otal content of elements
in steel or increasing Mn content in steel the electric conductivity ratio decreases, but with increasing the total content ele
ments(except Mn )the electric conductivity ratio of el increases ol obv sly, herefore the effect of Mn content in steel
on electric conductivity ratio is greatest. And improving the cleanliness of steel is available to improve the electric condu
tivity ratio of steel With optimizin the chemical composition original contro range of steel D105-/: 0. 100, s
0.10Si,≤0.35Mn,≤0.030Pand≤0.030 S to the control range-/%:≤0.02C,≤0.03Si,≤0.12Mn,≤0.025Pand
<0. 015S, and effectively controlling the cleanliness of steel durin
fining, the 256 heats examination results show
that the pereentage of heats of electric conductivity ratio z16% increases from original 63.25% to93.75
Material Index Stcel DI 05 for Cable, BOF-RH, Electric Conductivity Ratio, Mn, Chemical Composition
铜包钢兼具钢和铜的优良特性,具有良好的可
影响金属导体导电率的因素很多,作为钢材构
焊接、可塑、耐腐蚀及磁性能,相比于传统铜导线,具成的化学成分对其导电率的影响是最基木的?,分
有省铜材、比重轻、节成本等优点,在国民经济的持析研究该钢各主要成分对导电率的影响特点,总结
续增长、资源的日益匮乏和社会对钢材性能要求的规律,探究并制定洁浄度控制方案对提高Dl05电
愈益严苛今天,具有广阔的市场前景1。D105钢缆钢的导电率很有必要
就是典型的铜包钢,作为该钢重要性能指标之一的1生产工艺和现场数据分析
导电率(%IACS)需要在20℃时达到不小于16%的
武钢生产DLO5钢的工艺流程为:高炉铁水→
提高是钢厂亟待解决的难题之一。
脱硫处理(PB)→转炉冶炼(BOF)→在线吹氩调温
导电率的计算公式为:导电率/%(IACS)
(BAr)→RH处理(tRH)-~200mx200mm方坏连
2195L(dR)x100%。式中:IACS-国际退火铸(CC)→方坯精整修磨线-→高速线材轧制一斯太
铜标准;-金属线材标距长度/m;必-金属线材径/尔摩控冷一→集卷。
m;R20-20℃时金属线材直流电阻/Q。
DI05钢作为洁浄钢的代表,其化学成分组成特
通讯作者:彭其春,教授,武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,武汉43008
E-mail:pengqichun1964@163.com