Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第14卷    第z1期    总第100期    2004年5月

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文章编号:1004-0609(2004)S1-0082-09
新一代低碳钢——HSLC钢
傅  杰

(北京科技大学 冶金与生态工程学院, 北京 100083)

摘 要: 在整个钢生产过程中, 综合考虑了钢的冶金质量控制和轧制工艺控制, 实现了低碳钢晶粒细化和第二相析出综合强化, 使普通成分的低碳钢或不添加微合金元素V, Nb的低C-Mn钢的屈服强度达到了400~500MPa, 开发了新一代低碳钢——HSLC钢。 介绍了HSLC钢的力学性能及其冶金质量控制,主要为HSLC钢与HSLA钢的力学性能对比; CSP条件下低碳钢中碳的控制;电炉钢低氮控制理论与控制技术; 夹杂物超细化—纳米硫化物和氧化物固态析出的成分设计原则和控制技术以及钢中铝的作用与控制。并对低碳钢中纳米铁碳化物的析出及其对钢的强化作用、转炉薄板坯连铸连轧生产HSLC钢以及HSLC钢用于建筑钢筋生产的可能性进行了分析讨论,指出HSLC钢具有广阔的发展前景。 

 

关键字: 低碳高强度钢; HSLC; 成分控制; 纯洁度控制;析出强化; 综合强化

New generation low carbon steel—HSLC steel
FU Jie

School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China

Abstract:The metallurgical quality control and rolling technology control of steel were considered comprehensively during the all production process, and the integrated strengthening of grain refinement and the second phase precipitation was realiged in low carbon steel which result in the yield strength of low carbon steel and low C-Mn steel without microalloy element V or Nb addition reach 400~500MPa. The new generation low carbon steel—high strength low carbon(HSLC) steel was developed in China. The mechanical properties and metallurgical quality control of HSLC steel including the mechanical property comparison between HSLC steel and HSLA steel, control of carbon content in low carbon steel produced by EAF-CSP technology, low nitrogen control theory and technology of EAF steel, ultra refinement of inclusions- the chemistry composition design principle and control technology of nano- scale sulfide and oxide precipitated in solid phase, effect and control of aluminum were introduced. The precipitation of nano- scale iron carbide in low carbon steel and its strengthening effect, the possibility of HSLC steel production using BOF-TSCR process and reinbar production using HSLC steel were analyzed and discussed. It was pointed out that the HSLC steel had a broad development prospects.

 

Key words: high strength low carbon steel; HSLC; chemistry composition control; cleanness control; precipitation strengthening;integrated strengthening

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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