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Effect of Deformation between Stands on the Strip Shape in Hot Rolling

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International Journal of Minerals,Metallurgy and Materials 2000年第3期14卷 222-224页

作者： Qinghai Wu, Jie Zhang, Changsong Wang, Gangcheng Wei, Ping Song, Changhe Deng ( Mechanical Engineering School, University of Science and Technology Beijing, Beijing 100083, China wuhan iron & steel corporation) Mechanical Engineering School University of Science and Technology Beijing Beijing 100083 China wuhan iron and steel corporation China

A theoretical model about the secondary deformation is developed by the combination of analytical and experimental approaches. A system simulation based on the model is completed to predict the strip profile after the interstand deformation. On the other hand, comprehensive experiments and quantitative comparisons are made to calibrate the model for a wide variety of products. As a result, the correction of the model has been verified by the actual rolling data from production mill and it is helpful to improve the strip shape control.

关键词： hot rolling strip shape secondary deformation

Thermal Behaviors of Work Roll in Finishing Trains of Hot Rolling

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Journal of University of Science and Technology Beijing 2001年第1期8卷 59-62页

作者： Anrui He, Jie Zhang, Chen Zhang, Qingdong Zhang, Gangcheng Wei, Siqing Huang Mechanical Engineering School, University of Science and Technology Beijing, Beijing 100083, China wuhan iron and steel Group corporation, wuhan 430083, China Univ Sci & Technol Beijing Sch Mech Engn Beijing 100083 Peoples R China wuhan iron & steel Grp Corp Wuhan 430083 Peoples R China

In order to analyze the thermal field and thermal contour of work roll in finishing trains of hot rolling in rolling process, a quasi two-dimension implicit finite difference model is developed. To improve the calculating speed and precision, some special solutions are introduced, including the development of this model, the simplification of boundary conditions and the computation of heat transfer coefficients. The results show that these solutions of thermal behaviors of work roll are very much efficient and the model can be used as an on-line profile and fatness control model of large industrial mills.

关键词： hot rolling work roll thermal behaviors finite difference method

Research and Practice of Production Technology for High Performance Low Alloy steels in WISCO

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Journal of iron and steel Research International 2011年第S1期18卷 99-103页

作者： FU Lian-chun,GUO Ai-ming,LIU Ji-bin,GUO Bin,CHEN Yan-tang [wuhan iron and steel (Group) corporation,wuhan 430080,Hubei,China] wuhan iron & steel Grp Corp Wuhan 430080 Hubei Peoples R China

The product system of high strength low alloy steels (HSLA) produced by wuhan iron and steel (Group) corporation (WISCO) was presented.A series of high performance structural steels have been developed for important construction projects around the world in different areas,such as bridge,pressure vessel,pipe line,shipbuilding,architecture,machinery and railway *** order to promote the development of large heat input welding steel,high grade thick pipeline steel and long span bridge steel,a lot of advanced production technologies have been achieved through intensive investigation,such as the control of high purity,high homogenization and free defects in steel slabs,the rules of high melting point particle formation and distribution in micro and nano scale during steel production,and the TMCP technology for ultra low carbon bainite steel for medium and heavy *** will carry on research and application of economic and weather-resistant steels and promote the developing and producing technologies of HSLA steel.

关键词： WISCO high performance low alloy steels production technology

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转炉炼钢过程控制中的人工智能技术

炼钢 1998年第3期14卷 59-63页

作者： (Geljeral iron &. steel Research Institute)(University of Science 8.. Technology,lleijing)(wuhan iron &. steel Group corporation) 钢铁研究总院北京科技大学武汉钢铁集团公司

介绍了人工智能技术在转炉炼钢过程控制中的应用现状，对采用模糊控制和专家系统以及人工神经网络技术的控制方法进行了比较。转炉人工智能静态控制模型在武钢二炼钢的应用试验结果表明，人工智能技术的应用有利于进一步提高转炉炼钢过... 详细信息

介绍了人工智能技术在转炉炼钢过程控制中的应用现状，对采用模糊控制和专家系统以及人工神经网络技术的控制方法进行了比较。转炉人工智能静态控制模型在武钢二炼钢的应用试验结果表明，人工智能技术的应用有利于进一步提高转炉炼钢过程的自动化控制水平。

关键词：人工智能转炉过程控制炼钢

Study of Burden Distribution Control Based on Infrared Image Pattern Recognition and Case-Based Inference

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Study of Burden Distribution Control Based on Infrared Image...

Warm Compaction Process of P/M steels by Orthogonal Testing Method

第五届国际炼铁科技大会

作者： L K Chen (Research & Development Center wuhan iron & steel corporation wuhan 430080 China)

Burden and top gas distribution is very important for the operation of blast furnace. In order to control the burden distribution, a model to estimate top gas distribution has been developed based on infrared image pattern recognition. Some cases for burden distribution control are investigated in accordance with the theory of case-based inference and experiences obtained in the condition of change of burden distribution. After that, some new rules have been added into the knowledge base of the expert system of No.1 BF at WISCO. Practice has showed that the model of top gas distribution can be used to control the burden distribution in great extent with good operating results.

关键词： blast furnace image processing top gas control case-based inference burden distribution control

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Journal of wuhan University of Technology(Materials Science) 2008年第1期23卷 105-108页

作者：叶途明 YI Jianhong PENG Yuandong XIA Qinglin WANG Hongzhong State Key Laboratory for Powder Metallurgy Central South University Changsha 410083 China No.1 steelmaking Plant Wuhan Iron and Steel Corporation Wuhan 430083 China

In order to achieve higher density of P/M steels using the die wall lubrication compacting method or powder lubricant in warm compaction process, the influence of different process parameters on the green density of warm compacted samples was studied. According to the orthogonal test method, the authors systematically study the influence of the different compaction pressure, condition of lubrication and compaction temperature on the green density of the sample in the warm compaction process, and put forward the optimal process parameter of warm compaction experiment. It is found that, a high compaction pressure （≥700 MPa）, die wall lubrication combined with a small amount of internal lubricants, and fitting compaction temperature by different condition of lubrication, are the optimal parameters in warm compaction process.

关键词： warm compaction orthogonal test method die wall lubrication particle rearrangement plastic deformation

EXERGY ANALYSIS OF HEAT TREATMENT OF COLD ROLLED steel STRIP

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EXERGY ANALYSIS OF HEAT TREATMENT OF COLD ROLLED STEEL STRIP

Effect of Welding Heat Inputs on Microstructure and Mechanical Properties of the Welding Affected Zone of 800MPa Grade Ultra Fine Microstructure steel

国际能源转换及利用学术会议

作者： Mao Jingmin Zhou Tianxing Mining & Metallurgical Department University for Staffand Workers wuhan iron & steel (Group) corporation wuhan, Hubei P. R. China

An exergy analysis approach has been introduced in the paper to make an energy analysis of heat treatment system of the bell-annealing furnace for cold rolled steel strip, and a thermal calculation of various kinds of exergy during heat treatment. An explanation on the weak link of usage of energy was given. In addition to that, an analysis of exergy loss distribution in the weak link has been made. The result of above analysis provides the basis for any improvement of energy used for technological process.

关键词： Exergy Cold rolled steel strip Bell-annealing furnace

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Effect of Welding Heat Inputs on Microstructure and Mechanic...

The challenging conditions China's steel industry has to face and the possible way out

第二届先进钢铁结构材料国际会议

作者： LIU Jibin~(1,2), HU Lunji~1, WANG Yutao~2, MIAO Kai~2, LIU ZhenQing~2, TIAN ZhiLing~3 (1. Huazhong University of Science and Technology, wuhan 430074, China 2.Technology Center of wuhan iron and steel (Group) corporation, wuhan 430080,China 3. Central iron and steel Research Institute, Beijing 100080, China)

The microstructure and mechanical properties of the heat affected zone (HAZ) of 800MPa grade ultra fine microstructure steel was investigated by using simulated thermal cycles which represented different welding heat inputs. The analysis of HAZ microstructure found that the bainite was the main structure characteristic during different cooling time, and even in the fast cooling regime, the bainite sheaves consisted of bainite ferrite plates without carbide precipitation. The prior austenite grain of HAZ was coarsening rapidly at relatively lower cooling rate, and the bainite ferrite plates grew longer and almost developed in the same direction within a prior austenite grain. It was found that the HAZ toughness at -20℃deteriorated when the cooling time t was more than 20 seconds, and the Charpy V-notch (CVN) values was about 10J. The simulated HAZ became softer than the base metal when t was longer than 20 seconds. It was suggested that the welding heat input of this kind of 800MPa ultra fine microstructure steel should be controlled within t 15 seconds.

关键词： Ultra Fine Microstructure steel Heat Affected Zone Heat Input Microstructure Mechanical Properties Bainite

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Baosteel Technical Research 2010年第S1期4卷 125-页

作者： ZHANG Shourong wuhan iron & steel corporation,wuhan 430083,Hubei,China

The challenging conditions to China's steel industry currently are:insufficiency of natural resources, namely iron ore and coking coal,overcapacity of existing facilities,overconsumption of energy and heavy impact on ... 详细信息

关键词： challenging conditions China's steel industry possible way out