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| Development of HRB500E rebar containing Ni/Cr and vanadium saving by rational resource utilization |
| DAI Xiao-tian1，ZHOU He-min1，LI Wei2，QI Yuan-hong1，WANG Chang-cheng3 |
1. State Key Laboratory of Advanced Iron and Steel Processes and Products， Central Iron and Steel Research Institute， Beijing 100081， China
2. Research Institute of Functional Materials， Central Iron and Steel Research Institute， Beijing 100081， China
3. Guangxi Shenglong Metallurgical Co.， Ltd.， Fangchenggang 530022， Guangxi， China |
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Abstract A new method of producing resource saving， high strength， anti-seismic steel rebar was proposed， which could make full use of Ni， Cr elements in hot metal/liquid steel， as lateritic nickel ore was used as one of BF raw material. On the basis of 20MnSi steel， chemical components were designed according to the requirements of HRB500E grade rebar of China national standard. The effects of alloy elements， such as Ni， Cr and V on the mechanical properties of rebar were studied. The results show that， the mechanical properties of rebar met the requirements of HRB500E grade steel when the contents of Ni， Cr contents were 0.25% and the content of V reduced to 0.062%. As for the rebar which did not contain Ni， Cr elements， V content should reach 0.11% to meet the performance requirements of HRB500E grade. V content of HRB500E rebar which contains Ni and Cr is only equivalent to 56.36% of rebar without Ni and Cr. Hence， the effect of vanadium saving is obvious. This method not only saves the resource of vanadium， but also realizes the effective utilization of low-quality lateritic ore.
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Received: 14 May 2015
Published: 06 January 2016
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2016, Vol. 51 
