|
|
|
| Study on Reduction of Oxide Scale on BRC3 HotRolled Steel Strip by Carbon Monoxide |
| SHI Jie1，WANG Deren1，HE Yedong1，QI Huibin2 |
| 1. Beijing Key Laboratory for Corrosion Erosion and Surface Technology, University of Science and Technology Beijing， Beijing 100083, China;2. Technological Center， Bao Steel Group, Shanghai 201900, China |
|
|
|
|
Abstract Oxide scale on BRC3 hotrolled steel strip was investigated by scan electronic microscopy and Xray diffraction. The results showed that oxide scale consists of outmost hematite layer, intermediate magnetite layer and inner wustite layer.And a small amount of magnetite precipitates in wustite layer. During hightemperature reduction, all iron oxides are entirely transformed into wustite,then reduced by carbon monoxide. Finally a composite of white porous iron and some grey wustite is formed. It was found that the optimum parameters of reduction were:temperature was 750 ℃，carbon monoxide flow rate was 3 L/min and reaction time was 180 s.And the higher carbon monoxide flow rate,the higher reduction rate is.
|
|
Received: 01 January 1900
|
|
|
|
| [1] |
ZHOU Cong-rui， CHEN Xiao-long， ZHOU Ming-ke，FAN Lei， MEI Peng， BAO Si-qian. Cause analysis of surface blackening of SPHC hot rolled strip after pickling[J]. PHYSICS EXAMINATION AND TESTING, 2020, 38(3): 41-. |
| [2] |
zhong-peng. Analysis of the formation mechanism of surface skin on tinplate[J]. , 2020, 45(3): 0-0. |
| [3] |
MA Wei1,LI Wei-gang1,2,ZHAO Yun-tao1,YAN Bao-kang1. Prediction of hot-rolled roll force based on deep learning[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2019, 31(9): 805-815. |
| [4] |
YANG Geng-wei,LU Jia-wei,SUN Hui,FANG Zi-wei,ZHOU Yi-liao,YAO Nan. Microstructure, mechanical properties and phase transformation behavior of TiV microalloyed highstrength hotstrip steel[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2019, 31(8): 726-732. |
| [5] |
CAO Guang- ming,LI Zhi- feng,WANG Hao,LIU Zhen- yu. Progress of pickling- free reductive annealing hot- dip galvanization on hot- rolled steel[J]. , 2019, 31(2): 159-167. |
| [6] |
MA Wei1,LI Wei-gang1,2,ZHAO Yun-tao1,YAN Bao-kang1. Numerical simulation of gas flow and heat transfer of steel coil in cover of annealing furnace[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2019, 31(10): 889-896. |
|
|
|
|
2008, Vol. 43 
