|
|
|
| Research and development of deformation desistance model for phase transformation process of hot-rolled strips |
| LI Wei-gang1,2，FENG Ning1，WANG Shen-de3，YAN Bao-kang1 |
（1. School of Information Science and Engineering， Wuhan University of Science and Technology， Wuhan 430081，Hubei， China
2. Hubei Province Key Laboratory of Systems Science in Metallurgical Process， Wuhan University of Science and Technology， Wuhan 430081， Hubei， China
3. Technical Center， Hunan Hualing Lianyuan Steel Co.， Ltd.， Loudi 417009， Hunan， China） |
|
|
|
|
Abstract For the hot-rolled strip with phase transformation process existing in finishing rolling stage， its variation laws of deformation resistance with rolling temperature are significantly different from that of conventional austenitic rolled strip， which makes the prediction error by the traditional deformation resistance model relative large and affects the rolling stability seriously. Therefore， a new model of deformation resistance during hot rolling phase transformation process was developed. A new phase transformation trend term that was a quadratic polynomial function of rolling temperature was added on the basis of the original deformation resistance model， and the undetermined parameters of different steel grade are fine optimized according to the steel grade classification. This model is applied to online calculation for the prediction of deformation resistance in Lianyuan steel CSP production line. The practical application shows that the prediction accuracy of deformation resistance and roll force is significantly improved after using the new built model. Then the proportion of predicted roll force within the prediction error of 12% increased from 83.3% to 96.7%， which meet the rolling stability requirements of these hot rolled strips with phase transformation during finishing rolling process.
|
|
Received: 17 October 2016
Published: 09 June 2017
|
|
|
|
| [1] |
JIANG Yue-yue, WANG Zhao-dong, DENG Xiang-tao. Effect of trace rare earth Ce on martensitic transformation behavior of ultra-high strength low alloy steel[J]. Iron and Steel, 2020, 55(6): 84-90. |
| [2] |
JI Xiu-mei1,2,WANG Long1,GAO Ke-wei2,LIU Jie1. Application of ELM to predict plate rolling force[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(5): 393-399. |
| [3] |
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-. |
| [4] |
YI Hang1,YANG Geng-wei1,MAO Xin-ping1,2,ZHAO Gang1,XU Yao-wen1,BAO Si-qian1. Effect of deformation temperature on phase transformation behavior of hot rolled 65Mn steel produced by CSP process[J]. JOURNAL OF IRON AND STEEL RESEARCH , 2020, 32(1): 74-80. |
| [5] |
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. |
| [6] |
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. |
|
|
|
|
2017, Vol. 52 
